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	2022-11-16: Are there Undiscovered Elements Beyond The Periodic Table? 06:07: You might think that after a century and a half of thinking about nuclear physics, we’d have all of this figured out.
	2022-11-09: What If Humanity Is Among The First Spacefaring Civilizations? 20:01: This really got me thinking about other physics-themed Halloween costumes I could do this year.
	2022-10-26: Why Did Quantum Entanglement Win the Nobel Prize in Physics? 00:00: ... Nobel prize in physics is typically awarded to scientists who make sense of nature; those ... 00:21: ... year’s physics Nobel laureates are John Clauser, Alain Aspect, and Anton Zeilinger, who ... 15:24: He was such a deep lover of the  mysteries of physics and space he named his hamster Sputnik and his fish was named Quark. 15:54: And then the one were were went through the entire Lagrangian equation of the standard model of particle physics. 18:33: A few of you wondered whether the ghosts in the standard model Lagrangian might be a hint at new physics beyond the standard model. 19:09: On the other hand, I’m not a particle physicist, as is evident from my analogy which has nothing to do with particle physics. 00:21: ... year’s physics Nobel laureates are John Clauser, Alain Aspect, and Anton Zeilinger, who ...
	2022-10-19: The Equation That Explains (Nearly) Everything! 00:00: ... Standard Model of particle physics is arguably the most successful theory in the history of physics. It ... 01:02: ... rise to the fundamental forces. Gauge invariance says that the laws of physics should not care how certain properties of the world are defined or ... 03:07: ... is all possible due to an extremely powerful concept in physics called the Principle of Least Action, which we’ve talked about in ... 03:36: ... travels through the space of all possible quantum states. For classical physics it simplifies to just Kinetic Energy minus Potential ... 14:43: ... despite all this, the standard model lagrangian is an insane victory for physics. It predicts the behavior of the subatomic world with truly astonishing ... 03:07: ... is all possible due to an extremely powerful concept in physics called the Principle of Least Action, which we’ve talked about in detail. It ...
	2022-09-28: Why Is 1/137 One of the Greatest Unsolved Problems In Physics? 00:19: This is the fine structure constant, and it appears everywhere in our equations of quantum physics, and we’re still trying to figure out why. 00:30: ... like one of the many constants of nature  that power our laws of physics. ... 00:57: ... Dirac called it “the most  fundamental unsolved problem in physics.” Wolfgang Pauli said, “When I die my first question to the Devil will be: ... 03:16: We see combinations of these sorts of important  constants throughout the laws of physics. 04:34: And that’s just the tip of the iceberg for the appearances of the fine structure constant in the laws of physics. 09:36: You could try the various constants of nature  to demonstrate that you knew advanced physics. 13:51: ... structure constant  “one of the greatest damn mysteries  of physics” and Poetically mused that “the hand of God wrote  that number, and ... 00:57: ... Dirac called it “the most  fundamental unsolved problem in physics.” Wolfgang Pauli said, “When I die my first question to the Devil will be: What is ...
	2022-09-21: Science of the James Webb Telescope Explained! 16:03: It’s really hard to keep up with all the amazing work that’s happening in physics, so, mrwho995, thanks for helping us cover the bases.
	2022-09-14: Could the Higgs Boson Lead Us to Dark Matter? 00:12: It was the final piece needed to confirm the standard model of particle physics as that model now stands. 00:27: So the discovery of the Higgs wasn’t the end of particle physics - but it may be the way forward. 08:39: In this case, it’s by using a 350 year old law of physics known as conservation of momentum. 12:59: The discovery of the Higgs boson was the end of one era of particle physics but very much the beginning of another. 13:08: ... are entering the era of Higgs physics, and we don’t know what it’ll reveal —- hopefully a dark matter particle, ... 13:20: But certainly a portal beyond the familiar physics of our luminous space time. 00:27: So the discovery of the Higgs wasn’t the end of particle physics - but it may be the way forward.
	2022-08-24: What Makes The Strong Force Strong? 14:14: ... symmetry is baked into the laws of physics and there it manifests as the Strong Force, but SU(3) is free to appear ... 16:52: Starting with Lattice QCD, although the questions are more generally about particle physics.
	2022-08-03: What Happens Inside a Proton? 00:22: ... Physics has been insanely successful at  finding the underlying rules by ...
	2022-07-27: How Many States Of Matter Are There? 03:47: ... general the field of physics that studies the relationships between the statistical properties of ... 07:00: The stuff of quarks is generically called quark matter or QCD matter - for quantum chromodynamics - the physics of quark and gluon interactions. 12:09: ... material sciences - for example quantum mechanics and condensed matter physics - to help us understand why we see the world the way we ...
	2022-07-20: What If We Live in a Superdeterministic Universe? 10:47: ... therein evolves in a way that’s uniquely predictable by the laws of physics and its initial ... 15:52: ... our last episode we talked about the challenges in decoding alien physics due to the hidden conventions that have been chosen arbitrarily in order ... 16:03: Agnibho Dutta asks if there’s any symmetry in physics, which holds for transformations in the color charge? 17:45: ... fact these aliens would have to actually try to avoid revealing their physics conventions - any basic description of the universe they live in beyond ...
	2022-06-30: Could We Decode Alien Physics? 00:00: ... along with a reference manual   containing what amounts to all physics known by the aliens - including the equations of   their ... 01:25: ... but there’s no way to tell which was  chosen based on the laws of physics alone.  So we build the device with its  incorrect electronic ... 02:20: Is there anything in the way the aliens wrote down their laws of physics that might reveal our error? 05:20: ... we can’t rely on the equations describing   the laws of physics to determine the  alien sign convention for electric ... 05:33: ... its antiparticle. So as long as our compendium   of alien physics describes the interactions  of specific particles, we can ... 06:55: ... in our development of the laws of physics.   What if alien physics made other choices differently? Let's say that this rather finicky ... 07:38: ... using the right hand rule.   Cross products are everywhere in physics, for example in calculating torque, angular momentum,   ... 10:41: ... mirror-reflected, antimatter universe has the   same laws of physics as ours. But actually,  such a universe works differently in ... 11:52: ... as negative? Or do they do it the other way around? The laws of physics shouldn’t care   which you choose - so we say those  laws ... 14:09: ... systems. It contains our own confusingly   incomplete laws of physics. We actually ran out of space to include a lot of technology. We had ... 05:33: ... the frustrating symmetry of the   entire alien system of physics, allowing  us to identify its charge sign convention,   distinguish ... 01:25: ... but there’s no way to tell which was  chosen based on the laws of physics alone.  So we build the device with its  incorrect electronic ... 05:33: ... its antiparticle. So as long as our compendium   of alien physics describes the interactions  of specific particles, we can ... 07:38: ... using the right hand rule.   Cross products are everywhere in physics, for example in calculating torque, angular momentum,   and through ... 00:00: ... along with a reference manual   containing what amounts to all physics known by the aliens - including the equations of   their laws of ... 11:52: ... as negative? Or do they do it the other way around? The laws of physics shouldn’t care   which you choose - so we say those  laws are time ... 15:41: ... to? One of the   greatest savants of 20th century math and physics, John von Neumann. He came up with the concept   of the von Neumann ... 06:55: ... only arbitrary choice we’ve  made in our development of the laws of physics.   What if alien physics made other choices differently? Let's say ...
	2022-06-22: Is Interstellar Travel Impossible? 17:31: ... arbitrarily high densities and energies - as high as is possible before physics stops behaving as we know ...
	2022-06-15: Can Wormholes Solve The Black Hole Information Paradox? 07:24: ... that includes paths that are impossible  according to the laws of physics. In a way,   the “classical” and sensible path that we ...
	2022-06-01: What If Physics IS NOT Describing Reality? 00:00: ... Bohr said, “It is wrong to think that the  task of physics is to find out how Nature is.   Physics concerns what we can ... 00:25: ... is physics really trying to do? Is it to find  the mathematical laws that ... 02:44: ... in physics we try to break up the  world into its most elementary ... 00:00: ... that the  task of physics is to find out how Nature is.   Physics concerns what we can say about Nature.”  Well it turns out that if we pay ... 00:25: ... particles.”  In other words, the mathematical laws of   physics don’t govern reality, they’re not even  direct models of reality. Rather, ...
	2022-05-18: What If the Galactic Habitable Zone LIMITS Intelligent Life? 02:06: ... human’s perspective, without the  help or hindrance of 21st century physics. ...
	2022-04-27: How the Higgs Mechanism Give Things Mass 02:04: ... is the  gauge field. These arise from   the fact that physics often doesn’t  care what coordinate system you use.   The ... 03:09: ... symmetry of nature - in this case the fact   that the laws of physics are invariant  under changes in local phase. The set   ... 02:04: ... symmetric  under certain transformations.   For example, physics works the same no matter  where you decide to center your x-y-z axes, or ... 09:34: ... means requiring local   U(1) invariance. We need the laws of physics  to still make sense if there are rotations from   one point in ...
	2022-04-20: Does the Universe Create Itself? 00:30: ... subjective experience of it. That seems innocent enough, and it served physics awfully well. But take this viewpoint to the extreme and we imagine the ... 17:08: ... for the universe to be a black hole would require very different physics. In a way that’s right. If the universe is a black or a white hole then ...
	2022-03-23: Where Is The Center of The Universe? 01:06: ... Copernican principle nor the Cosmological principle are actual laws of physics - they’re philosophical positions - guiding principles that so far have ... 10:40: They probably also represent places where our understanding of physics breaks apart. 01:06: ... Copernican principle nor the Cosmological principle are actual laws of physics - they’re philosophical positions - guiding principles that so far have ... 10:40: They probably also represent places where our understanding of physics breaks apart.
	2022-03-16: What If Charge is NOT Fundamental? 00:00: If you've studied any physics you know that like charges repel and opposite charges attract. 00:30: Although many mysteries remain in physics, at least our understanding of electricity and magnetism seems pretty complete. 01:10: But why?”, where the only answer is: "just because." The idea of “fundamental” feels like the physics version of “just because”. 01:30: ... and the answers will take us   through the birth of Particle Physics, and, in fact, through the birth of the universe ... 01:39: As with much of modern physics, this story begins with Werner Heisenberg, whose epiphanies birthed quantum mechanics. 07:10: ... between these two new properties hinted that there may exist even deeper physics yet; even more  fundamental rules which explained why they should ... 01:10: But why?”, where the only answer is: "just because." The idea of “fundamental” feels like the physics version of “just because”.
	2022-03-08: Is the Proxima System Our Best Hope For Another Earth? 03:33: Proxima’s emissions lines seemed to shift back and forth from the wavelengths dictated by the laws of physics.
	2022-02-23: Are Cosmic Strings Cracks in the Universe? 12:19: ... a theory of everything - a theory   that brings together all physics as we know it.  The fundamental building blocks of the theory ...
	2022-02-16: Is The Wave Function The Building Block of Reality? 08:55: ... decoherence would simultaneously explain two mysteries of physics. 1. What causes the transition from quantum to classical? And 2. Why ... 12:55: ... paths to investigating one of the biggest unanswered questions in physics. And one that we’ll be coming back to. What, in fact, is the quantum wave ... 13:19: ... at the Big Bang Level. Ben there are many uncertainties in the world of physics. Is the wave function objectively real? Or is it a statistical or ... 08:55: ... decoherence would simultaneously explain two mysteries of physics. 1. What causes the transition from quantum to classical? And 2. Why can’t ...
	2022-02-10: The Nature of Space and Time AMA 00:03: ... both space and time okay we start in this description with newtonian physics in which they're the dimensions that form the stage on which the play ...
	2022-01-19: How To Build The Universe in a Computer 09:17: Astrophysicists often inject all sorts of other physics into their simulations.
	2021-12-29: How to Find ALIEN Dyson Spheres 06:30: Stars are surprisingly simple beasts, for the most part ruled by laws of physics that we’ve understood for centuries.
	2021-12-20: What Happens If A Black Hole Hits Earth? 19:14: ... points out that any well-developed intuition for physics points to the correctness of the fuzzball model on account of the fact ...
	2021-12-10: 2021 End of Year AMA! 00:02: ... country of austin asks what is my background in education [Music] and physics and how did i end up as the host of the show well the background ...
	2021-11-17: Are Black Holes Actually Fuzzballs? 00:04: They are paradoxical because they simultaneously must exist but can’t, and so they break physics as we know it. 00:13: But many physicists will tell you that the best way to fix broken physics is with string. 01:00: At the central singularity, the known laws of physics break down - general relativity comes into irreconcilable conflict with quantum mechanics. 03:57: When we see an apparent paradox in physics, it’s really a clue pointing to a gap in our understanding. 06:12: Lose that pesky infinite density and we can start making sense of physics again. 01:00: At the central singularity, the known laws of physics break down - general relativity comes into irreconcilable conflict with quantum mechanics.
	2021-11-10: What If Our Understanding of Gravity Is Wrong? 04:50: Two: it needs to be consistent with   the other known laws and theories  of physics that are experimentally verified. 05:58: Is MOND consistent with the rest of physics? 07:33: The next critical step was to get a version of MOND that didn’t contradict so much of the rest of physics. 13:32: ... possibilities for what it might be beyond our standard model of particle physics. ... 15:36: Our last episode was all about the principle  of least action, and how this one simple idea sort of leads to all of physics. 16:23: It’s the symmetries of the Lagrangian via Noether’s theorem that yields our conservation laws and ultimately, well, all of physics.
	2021-11-02: Is ACTION The Most Fundamental Property in Physics? 00:02: ... about time we discussed an obscure concept in physics that may be more fundamental than energy and entropy and perhaps time ... 04:29: ... the work for us by finding the Euler-Lagrange equations, allowing both physics students and nature to minimize their action. The Principle of Least ... 17:24: ... hope is that this process converges on a single function, which means physics is over. Or we might find there are still infinite functions that can ... 04:29: ... the work for us by finding the Euler-Lagrange equations, allowing both physics students and nature to minimize their action. The Principle of Least Action in ...
	2021-10-20: Will Constructor Theory REWRITE Physics? 00:00: ... people behind the greatest leaps in physics - Einstein, Newton, Heisenberg, all had the uncanny ability to see the ... 00:23: ------Intro Sequence----- Pretty much all of physics can be boiled down the following: Step 1. 00:59: ... engines, airplanes, skyscrapers, and our entire modern world In short, physics works by applying dynamical laws to some input state in order to predict ... 01:21: In fact it’s hard to imagine another way to do physics. 02:10: Some are starting to wonder if we need to rethink how we do physics at the fundamental level. 03:11: ... says, if a quantum computer can, in principle, simulate any process in physics, then all of physics can be expressed in terms of the theory of quantum ... 04:21: The power of constructor theory is that it allows us to explore physics without having to solve the detailed equations of motion. 04:55: ... mechanistic philosophy that dominates physics really started with Isaac Newton, so it’s appropriate to start with the ... 07:11: We already use counterfactuals regularly in physics. 10:15: ... the most fundamental way to describe reality - in which case the rest of physics can be derived from Constructor Theory once it’s properly ... 00:00: ... people behind the greatest leaps in physics - Einstein, Newton, Heisenberg, all had the uncanny ability to see the ... 00:59: ... engines, airplanes, skyscrapers, and our entire modern world In short, physics works by applying dynamical laws to some input state in order to predict an ... 11:52: ... possible in this universe,   you’ve decided that the laws of physics  should permit the existence of Space ...
	2021-10-13: New Results in Quantum Tunneling vs. The Speed of Light 01:43: There’s nothing in the laws of physics that could allow you to reach the other side of the hill. 01:48: Well, nothing in the laws of classical physics anyway.
	2021-10-05: Why Magnetic Monopoles SHOULD Exist 00:08: It’s the magnetic monopole - and of all the fantastical beasts of particle physics, this is perhaps the most likely to actually exist. 10:13: ... the laws of physics shouldn’t care about the relative internal values of the Higgs field - ...
	2021-09-21: How Electron Spin Makes Matter Possible 14:58: ... you some exotic form of matter, presumably unbound by the laws of known physics. So thank you for interacting with us lowly, fermionic life-forms - our ... 18:44: ... us that Space Time made him realize that he’s more interested in quantum physics than astrophysics. Hey, at least you didn’t devote decades of your ...
	2021-08-18: How Vacuum Decay Would Destroy The Universe 01:00: ... at least one mechanism that could rewrite  the laws of physics across the universe.   That mechanism is vacuum decay, ... 08:30: ... states.   The decay of those could rewrite the  laws of physics in far more drastic ... 00:00: ... the most thorough - because  it could totally rewrite the laws of physics.   Today I hope to help you understand  exactly how terrified you ...
	2021-07-07: Electrons DO NOT Spin 00:22: ... a classic demonstration done in undergraduate physics courses - the physics professor sits on a swivel stool and holds a ... 02:25: ... effect was explained by Lorentz himself with the ideas of classical physics. If you think of an electron as a ball of charge moving in circles around ... 00:22: ... a classic demonstration done in undergraduate physics courses - the physics professor sits on a swivel stool and holds a spinning ...
	2021-06-23: How Quantum Entanglement Creates Entropy 00:00: ... is surely one of the most perplexing concepts in physics. It’s variously described   as a measure of a system’s disorder ... 00:27: ... hole information paradox—a solution that may one day unite quantum physics with ...
	2021-06-16: Can Space Be Infinitely Divided? 05:08: ... universe. We recently talked about   how with a bit of clever physicsing it’s possible to stretch the uncertainty principle to the ... 11:26: ... to stay tuned to the show, and to the future   of physics, to find out what might lie beneath the smallest possible scale of ... 05:08: ... a new source of quantum   uncertainty that you can’t ever physics away. And we hit that uncertainty at the Planck ...
	2021-06-09: Are We Running Out of Space Above Earth? 16:19: ... also a great excuse for why you didn’t finish your physics homework on time - no self-respecting physics professor can confidently ...
	2021-04-21: The NEW Warp Drive Possibilities 01:54: ... carefully calculated work of pure fiction - it broke the laws of physics in ways that I’ll come back ... 14:04: We’ll start with the muon g-2 result, which revealed a possible a crack in the standard model of particle physics. 15:30: ... find that elusive crack in the standard model that may lead to whatever physics lies ... 18:36: Nice one, physics. 15:30: ... find that elusive crack in the standard model that may lead to whatever physics lies ...
	2021-04-13: What If Dark Matter Is Just Black Holes? 00:30: ... we recently discussed some of the possibilities for brand new particle physics that might explain dark ... 00:53: But there is one explanation that may require no new physics whatsoever - an explanation that is so bafflingly simple it almost feels overlooked. 10:57: ... - but don’t be sad - that means dark matter is probably something that physics hasn’t explained yet, which means when we figure it out we’ll have a ... 11:13: But speaking of new physics - one last option. 00:53: But there is one explanation that may require no new physics whatsoever - an explanation that is so bafflingly simple it almost feels overlooked.
	2021-04-07: Why the Muon g-2 Results Are So Exciting! 00:07: But what if that theory has otherwise produced the most successful predictions in all of physics. 00:13: Then that little glitch maybe pointing the way to layers of physics deeper than we've yet imagined. 00:29: (bright music) The Standard Model of particle physics describes the elementary building blocks of nature with incredible success. 00:54: Our search for a theory of everything which will bring these theories together is perhaps the next great question physics. 01:05: Loose threads, that might lead us to deeper layers of physics. 02:28: By far the most accurate prediction in all of physics. 02:58: And that something maybe physics beyond the Standard Model. 07:58: ... include every possibility encompassed by the Standard Model of particle physics, we get a g-factor that's ever so slightly off the experimental ... 00:13: Then that little glitch maybe pointing the way to layers of physics deeper than we've yet imagined. 00:29: (bright music) The Standard Model of particle physics describes the elementary building blocks of nature with incredible success.
	2021-03-23: Zeno's Paradox & The Quantum Zeno Effect 12:55: ... and you want to dig deeper, you should check out Mysteries of Modern Physics: Time hosted by Dr. Sean ...
	2021-03-16: The NEW Crisis in Cosmology 15:19: ... you're in good company. There's this story   of a young physics student hearing the description of the double slit experiment, in ... 17:05: So, yeah, nice work reinventing  all of physics guys. 15:19: ... you're in good company. There's this story   of a young physics student hearing the description of the double slit experiment, in which ... 09:50: ... we start jumping up and  down and yelling about new physics,   remember that we’re level-headed scientists. Two independent ...
	2021-03-09: How Does Gravity Affect Light? 03:29: ... equivalence principle tells us that we must experience all the same physics if at rest in a gravitational field - say, in a fake rocket ship in a ...
	2021-02-24: Does Time Cause Gravity? 06:42: By the way, two of my favorite physics channels have great, slightly different explanations of this effect.
	2021-02-17: Gravitational Wave Background Discovered? 00:00: ... to prove the existence of say cosmic strings or inflation or other weird physics this way then we have opened a window into realms of physics beyond our ...
	2021-02-10: How Does Gravity Warp the Flow of Time? 01:00: ... distant from any gravitational field - at least as far as the laws of physics are ...
	2021-01-26: Is Dark Matter Made of Particles? 01:27: But those possibilities are for another time - today we’re focusing on the bizarre physics of the dark sector. 07:25: This is a weird little particle that popped up in the math when physicists were trying to solve another mystery of physics - the so-called CP problem. 15:11: ... is fundamentally the same as gravitation as far as the laws of physics are ... 07:25: This is a weird little particle that popped up in the math when physicists were trying to solve another mystery of physics - the so-called CP problem.
	2020-12-22: Navigating with Quantum Entanglement 11:40: ... swallows - european especially - birds of many a feather using quantum physics to flock together to navigate the hidden lines of a geomagnetic space ... 14:08: This all depends on some physics that we haven’t nailed down yet.
	2020-12-15: The Supernova At The End of Time 05:37: And in the extreme density of a white dwarf, electrons would indeed be traveling fast enough for relativity to change the physics. 12:40: In other words, how does our psychological sense of the arrow of time arise when the laws of physics don't seem to care about the direction of time.
	2020-12-08: Why Do You Remember The Past But Not The Future? 00:00: The laws of physics don’t specify an arrow of time - they don’t distinguish the past from the future. 00:12: ... the brain is a thing and its ruled by the laws of physics - why does the brain and the conscious experience that emerges from it, ... 04:11: ... but let’s look at this from the point of view of the timeless laws of physics and see if we can identify where the arrow of time enters the ... 04:41: Let’s say this process is reversible - the particle physics jury is still out on whether protons can decay - but for this episode they can. 05:38: If the laws of physics can exactly reconstruct the formation of the proton, those same laws can be used to project when the proton will decay. 09:14: ... by one. This reversed time scenario doesn't actually break any laws of physics. It's just insanely unlikely. As unlikely as decreasing ... 10:29: ... not that physics prefers one time direction over the other - it’s just that a low entropy ... 00:12: ... the brain is a thing and its ruled by the laws of physics - why does the brain and the conscious experience that emerges from it, ... 00:00: The laws of physics don’t specify an arrow of time - they don’t distinguish the past from the future. 04:41: Let’s say this process is reversible - the particle physics jury is still out on whether protons can decay - but for this episode they can. 10:29: ... not that physics prefers one time direction over the other - it’s just that a low entropy allows ...
	2020-11-18: The Arrow of Time and How to Reverse It 00:00: ... backwards in time and do things differently? Good news: the laws of physics seem to say traveling backwards in time is the same as traveling ... 00:24: ... laws of physics describe how the universe at one instant evolves into the universe at ... 01:38: ... what exactly do we mean when we say the laws of physics don’t care about the direction of time? Basically, if you reversed the ... 02:53: ... the laws of physics don’t care about the direction of time. They just describe the ... 06:00: ... doesn’t care about the direction of time any more than the other laws of physics - it just wants to increase in adjacent time-steps, in either ... 06:19: ... particle interactions and you see perfect reversibility of the laws of physics, but zoom out and time’s arrow emerges. The presence of an entropy ... 08:11: ... of instances - slices of the block universe connected by the laws of physics, then we can break the symmetry in the direction of time if one of those ... 10:20: ... two episodes - electroweak theory and our discussion on free will in physics. ... 11:16: ... generator whose gigantic store of random numbers are then used by, like, physics and stuff for the rest of time. And our brains use those random numbers ... 12:35: ... positions we discussed. Well I wanted to make sure it was more of a physics episode than a philosophy episode. But I also may have a personal ... 13:36: ... proof regarding quantum electrodynamics, which comes from ontology: 1. A physics theory with a cool abbreviation is inherently better than a physics ... 13:58: therefore Quantum electrodynamics is better than other physics theories. 06:00: ... doesn’t care about the direction of time any more than the other laws of physics - it just wants to increase in adjacent time-steps, in either ... 01:38: ... what exactly do we mean when we say the laws of physics don’t care about the direction of time? Basically, if you reversed the motion ... 02:53: ... the laws of physics don’t care about the direction of time. They just describe the relationship ... 01:38: ... what exactly do we mean when we say the laws of physics don’t care about the direction of time? Basically, if you reversed the motion of ... 02:53: ... the laws of physics don’t care about the direction of time. They just describe the relationship between ... 12:35: ... positions we discussed. Well I wanted to make sure it was more of a physics episode than a philosophy episode. But I also may have a personal distaste for ... 13:58: therefore Quantum electrodynamics is better than other physics theories. 13:36: ... proof regarding quantum electrodynamics, which comes from ontology: 1. A physics theory with a cool abbreviation is inherently better than a physics theory ...
	2020-11-11: Can Free Will be Saved in a Deterministic Universe? 00:19: So of course, "Space Time" needs to weigh in on the subject of physics and free will. 00:45: And this naturally brings into focus the question of how physics relates to the concept of free will. 01:47: ... we do wanna look at the most popular way this question is positioned in physics, the idea that determinism negates free ... 12:46: ... are definitions of free will that we probably don't have, but both physics and neuroscience tell us that we can probably call ourselves free-willed ... 00:45: And this naturally brings into focus the question of how physics relates to the concept of free will.
	2020-11-04: Electroweak Theory and the Origin of the Fundamental Forces 06:05: ... said that at each point in space, the physics shouldn’t change when we shift both the real and complex parts of the ... 14:10: ... big bang, it’s bad because it causes unreconciled conflicts with other physics - quantum theory in this ... 06:05: ... said that at each point in space, the physics shouldn’t change when we shift both the real and complex parts of the wavefunction ...
	2020-10-27: How The Penrose Singularity Theorem Predicts The End of Space Time 00:00: ... Nobel prize in physics this year went to black holes. Generally speaking.   ... 04:35: ... picture I can refer you to a good grad   program in physics - but let’s see how much we can do in a handful of minutes. ... 12:11: ... Penrose won this year’s Nobel prize  in physics for his contributions to our   theoretical understanding of ... 04:35: ... picture I can refer you to a good grad   program in physics - but let’s see how much we can do in a handful of minutes. ...
	2020-10-20: Is The Future Predetermined By Quantum Mechanics? 01:44: They are connected by the unalterable laws of physics.
	2020-10-13: Do the Past and Future Exist? 00:36: Big questions that’ll take us to the edge of what physics can answer, and perhaps beyond. 00:41: But today we’re definitely doing physics, because physics already tell us a lot about the reality of the past, future and present. 01:02: But interpreted some ways, physics suggests that the future and the past exist eternally, while the present is an illusion. 01:17: As with many ideas in physics, this one originates with Isaac Newton. 02:44: Every slice is the same universe at a particular instant, and it evolves from one slice to the next according to the laws of physics. 01:02: But interpreted some ways, physics suggests that the future and the past exist eternally, while the present is an illusion.
	2020-09-28: Solving Quantum Cryptography 13:58: ... proponents would rather put their faith in fundamental laws of physics - pretty darn secure if only we had a quantum ...
	2020-09-21: Could Life Evolve Inside Stars? 01:13: ... idea was just published in Letters High Energy Physics Letters by physicists Luis Anchordoqui and Eugene Chudnovsky, and today ... 05:58: But if you add slightly more exotic physics you can form different types of monopole. 08:42: In fact we talked about all of that in our episode on the physics of life. 09:34: At any rate, the star should behave differently to what our stellar physics models predict. 11:06: ... is that we have this hoppin Patreon discord channel where space and physics geeks from around the world ponder the nature of ... 11:35: By, like, supporting physics youtube shows and such. Thanks James, may your semipoles never annihilate. 11:42: Hey everyone. Comment responses today are on our episode on the pursuit of beauty in physics. 11:06: ... is that we have this hoppin Patreon discord channel where space and physics geeks from around the world ponder the nature of ... 01:13: ... idea was just published in Letters High Energy Physics Letters by physicists Luis Anchordoqui and Eugene Chudnovsky, and today on Space ... 09:34: At any rate, the star should behave differently to what our stellar physics models predict. 11:35: By, like, supporting physics youtube shows and such. Thanks James, may your semipoles never annihilate.
	2020-09-08: The Truth About Beauty in Physics 00:00: ... usually chose the beautiful.” But is this actually good advice for doing physics? ... 00:20: ... towards truth - the more beautiful the equations of a proposed law of physics, the more likely it is to truly represent ... 00:37: ... it’s also been argued that modern theoretical physics, and in particular string theory, has been overly transfixed by the ... 04:17: ... in physics, when we talk about symmetry we mean that a physical law is unchanged by ... 04:36: ... make powerful use of these symmetries to derive our laws of physics, and so perhaps it’s not surprising these equations possess some of the ... 04:47: ... law of physics might also be considered beautiful if it reduces to a compact expression ... 11:43: ... slightly ugly but fantastically successful standard model of particle physics. ... 12:20: Ultimately, our sense of beauty can’t be cleanly defined - not in art and not in physics. 12:36: And that imprecise subjectivity may be a reason to pay attention to our sense of beauty in physics, rather than reject it.
	2020-09-01: How Do We Know What Stars Are Made Of? 01:05: And yet in a handful of years during the 1920s we went from no idea to having a pretty solid understanding of stellar physics. 01:24: She not only revolutionized our understanding of the stars, but she helped blaze a trail in astronomy and physics for the women who would come after. 01:31: We’ll get to the physics in a minute - but Payne deserves a quick bio. 01:59: ... transformation of my world picture.” She switched from biology to physics, finished her studies, but couldn’t even graduate properly - Cambridge ... 10:20: ... made of, he and others were able to develop a detailed theory of stellar physics. ... 01:59: ... transformation of my world picture.” She switched from biology to physics, finished her studies, but couldn’t even graduate properly - Cambridge simply did ...
	2020-08-24: Can Future Colliders Break the Standard Model? 00:18: ... physicists published their vision for the next several years of particle physics experiments in the ... 00:47: The hope is that this will open the window to brand new physics - and perhaps break the current deadlock in our quest for a theory of everything. 09:50: ... the superheavy top quark, a process that might contain hints about new physics. ... 12:07: ... is built on the technologies that came from this sort of fundamental physics research, I want to leave you with a quote by Fermilab’s first director, ... 00:47: The hope is that this will open the window to brand new physics - and perhaps break the current deadlock in our quest for a theory of everything. 00:18: ... physicists published their vision for the next several years of particle physics experiments in the ...
	2020-08-17: How Stars Destroy Each Other 14:34: Laura Chapple follows up by saying this episode was worryingly comprehensible and wonders if we’ve run out of physics.
	2020-08-10: Theory of Everything Controversies: Livestream 00:00: ... to bring together some of the leading researchers uh in particle physics and in cosmology to look for a way forward brian great to have you on ...
	2020-07-28: What is a Theory of Everything: Livestream 00:00: ... to do would be to bring together today's frontline researchers uh in physics experimental and theoretical for a real conversation so brian is a ...
	2020-07-08: Does Antimatter Explain Why There's Something Rather Than Nothing? 02:12: ... to perform any of these transformations, or all of them, and the laws of physics should be unchanged. We have charge conjugation, where positive and ... 11:51: ... one of these Space Time episodes where scientists busted ass to break physics and … didn’t. But as I’ve said before, that’s cool and amazing in ...
	2020-06-30: Dissolving an Event Horizon 00:00: Black hole singularities break physics - fortunately, the universe seems to conspire to protect itself from their causality-destroying madness. 00:36: Causality breaks down, and so the supreme sensibleness of physics is badly threatened. 01:21: This would wreak havoc on our understanding of causality, and our precious laws of physics would become unhinged. 02:12: So let’s talk about how to dissolve an event horizon, although I would ask you to please not try this at home, for the sake of all of physics. 10:48: In fact, if you define the cosmic censorship hypothesis in more technical terms, it seems that physics should allow its violation. 10:57: And that would be a big problem for physics. 00:00: Black hole singularities break physics - fortunately, the universe seems to conspire to protect itself from their causality-destroying madness.
	2020-06-22: Building Black Holes in a Lab 01:11: ... can do to convince ourselves of their existence. Actually studying the physics of real black holes is much, much harder. I mean, we could try to make ... 07:41: ... deeply in fact - we’ve traveled through them to other universes. Their physics is extremely speculative, but some of that physics is now on much more ... 11:04: ... some ways, the crux of the matter is as much philosophy as physics: How much can analog black holes actually tell us about real black holes? ...
	2020-06-15: What Happens After the Universe Ends? 07:46: The standard model of particle physics predicts eternal electrons.
	2020-05-27: Does Gravity Require Extra Dimensions? 05:50: 3 extended dimension, but others that are looped - or “compactified” as we say in physics. 09:47: ... gravity, but also arguably marked the beginning of a grand tradition in physics of making high-precision measurements to learn about the fundamental ... 12:29: This little show about hardcore physics and astrophsyics just hit 2 million subscribers. 13:49: ... black holes has nothing to do with the multiverse predicted by quantum physics. ...
	2020-05-18: Mapping the Multiverse 10:37: ... the bizarro negative time traveling universe either - here, the laws of physics are the same as where you started - at least as far as general ... 14:05: ... time we talked about the greatest failed experiment in the history of physics - the Michelson-Morley experiment, and how it did away with the idea of ... 14:33: Well, unlike 120 years ago, I wouldn't say physicists today are under any illusions that physics is "complete". 14:05: ... time we talked about the greatest failed experiment in the history of physics - the Michelson-Morley experiment, and how it did away with the idea of ... 00:02: Or in physics-ese, it’s the maximally extended Penrose diagram of a Kerr spacetime.
	2020-05-11: How Luminiferous Aether Led to Relativity 00:00: ... would bring the entire structure crashing down paving the way for the physics revolutions of the 20th ... 00:31: ... attempted to verify the existence of one of the oldest concepts in physics. They attempted to measure the luminiferous aether - the invisible, ... 01:09: ... in cracking the supposedly unassailable foundations of 19th century physics. The death of the aether helped open the way for the acceptance of ... 06:22: ... mechanics and gravity, Huygen’s optics, Maxwell’s electromagnetism, physics seemed pretty much wrapped up. Albert Michelson and Edward Morley ... 11:04: ... may be the most famous null result in the history of physics. There appeared to be no luminiferous aether - at least, not one that ... 11:42: ... and, according to Einstein, it revealed the cracks in the foundations of physics that allowed his ideas to be ... 13:18: ... and the passing of the sensible, down-to-earth world of 19th century physics. But that death helped spark the revolutions of relativity and then ... 00:00: ... would bring the entire structure crashing down paving the way for the physics revolutions of the 20th ...
	2020-04-28: Space Time Livestream: Ask Matt Anything 00:00: ... whatever we want to talk about we're gonna talk about space stuff physics stuff but we're also going to talk about really anything else that ...
	2020-04-22: Will Wormholes Allow Fast Interstellar Travel? 07:03: ... examples was in Carl Sagan's novel Contact. To make sure he got the physics right, Sagan called up his friend Kip Thorne. Sagan’s initial idea was ... 11:03: ... physics has not yet ruled out its existence, exotic matter threatens horrible ...
	2020-04-07: How We Know The Earth Is Ancient 04:32: ... is not in a privileged position in the universe, and so the laws of physics work the same everywhere. Hutton’s uniformitarianism is a sort of ... 06:07: ... how we can possibly know that age, we have to turn from geology to physics. ... 04:32: ... is not in a privileged position in the universe, and so the laws of physics work the same everywhere. Hutton’s uniformitarianism is a sort of temporal ...
	2020-03-31: What’s On The Other Side Of A Black Hole? 07:32: ... an Einstein-Rosen bridge - a wormhole. We’ll come back to the detailed physics of wormholes another time - today we’re interested in what that journey ...
	2020-03-24: How Black Holes Spin Space Time 12:36: ... player-versus-environment battle mode. Gameplay features real-world ship physics, that are based on historical ships from the early to mid 20th century ... 12:11: ... they’re also very worrying to physicists, because they threaten several physics-breaking phenomena - time travel, universe-hopping, and naked singularities. And ...
	2020-03-16: How Do Quantum States Manifest In The Classical World? 15:11: ... course you'll confront the incompatibility between the standard model of physics and general relativity And learn what cutting edge science is doing to ... 16:29: ... Bangs. Well, the key phrase here is "possible future". Do the laws of physics allow an entropy fluctuation large enough to produce a new big bang? ...
	2020-02-24: How Decoherence Splits The Quantum Multiverse 02:20: Over time the histories of a quantum system separate to represent every possible future the laws of physics allow.
	2020-02-18: Does Consciousness Influence Quantum Mechanics? 08:20: ... himself after Einstein accused him of introducing mysticism into physics. ... 08:49: With the greats of quantum physics inclined to speak in mystical terms, it’s not surprising that the idea stuck around. 08:56: ... the 1970s, books like The Tao of Physics and The Dancing Wu Li Masters drew parallels between eastern mystical ... 13:20: ... want to check it out if you haven't - 24-7 discussions of all things physics and space - questions are answered, episode suggestions are heard, and ... 08:56: ... Masters drew parallels between eastern mystical traditions and quantum physics - which on its surface seems like a nice idea - poetic descriptions of the ... 08:49: With the greats of quantum physics inclined to speak in mystical terms, it’s not surprising that the idea stuck around.
	2020-02-11: Are Axions Dark Matter? 00:27: ... history of the axion is a classic physics tale: intrepid scientists delve deep into trackless mathematics in ... 01:05: ... we need to go back and look at one of the most powerful concepts in physics: symmetry. We expect the laws of physics to be symmetric with respect to ... 05:16: ... should be zero - at least not within the standard model of particle physics. This fundamental constant may have ended up very close to zero just by ... 06:54: ... oscillation gives us the axion. It was actually that of two titans of physics - Frank Wilczek and Steven Weinberg - who first realised that this new ... 11:08: ... to be real they may clean up two of the most vexing problems in modern physics - the strong CP problem AND the nature of dark matter. Not bad for one ... 06:54: ... oscillation gives us the axion. It was actually that of two titans of physics - Frank Wilczek and Steven Weinberg - who first realised that this new ... 11:08: ... to be real they may clean up two of the most vexing problems in modern physics - the strong CP problem AND the nature of dark matter. Not bad for one of ... 06:54: ... oscillation gives us the axion. It was actually that of two titans of physics - Frank Wilczek and Steven Weinberg - who first realised that this new field ... 01:05: ... - positive to negative and vice versa - most of the equations of physics hold under that flip. But not all. In a previous episode we talked about how ... 00:27: ... history of the axion is a classic physics tale: intrepid scientists delve deep into trackless mathematics in search of ... 01:05: ... is NOT symmetric under combined charge and mirror inversion and - or in physics-speak, the weak force is not CP symmetric - its behavior changes if you flip ...
	2020-02-03: Are there Infinite Versions of You? 00:50: An infinite universe may literally contain every possible thing allowable by the laws of physics - each in infinite multitude. 04:36: ... happen from the range of initial conditions developing under the laws of physics. ... 07:12: I should also note that it’s not just the particles that define starting conditions, there’s also the laws of physics themselves. 07:24: ... - eventually leading to an exact-enough repetition of both the laws of physics AND the arrangement of ... 10:10: ... so unless there’s something weird hiding in the laws of physics that we don’t understand, an infinite universe probably does duplicates ... 00:50: An infinite universe may literally contain every possible thing allowable by the laws of physics - each in infinite multitude.
	2020-01-27: Hacking the Nature of Reality 00:00: In particle physics we try to understand reality by looking for smaller and smaller building blocks. 05:34: The S-matrix was to become the physics of the interaction, rather than an emergent property of more fundamental, internal physics. 10:01: The result is quantum chromodynamics - our modern description of sub-nuclear physics. 11:58: ... bootstrapping a scattering experiment without understanding the internal physics, Steven Hawking's derivation of Hawking ... 13:43: It's hopping with lively conversations about everything space, physics, or things that spacey physicsy people are into. 11:58: ... bootstrapping a scattering experiment without understanding the internal physics, Steven Hawking's derivation of Hawking ... 13:43: It's hopping with lively conversations about everything space, physics, or things that spacey physicsy people are into.
	2020-01-20: Solving the Three Body Problem 00:20: ... Physics - and arguably all of science changed forever in 1687 when Isaac Newton ... 13:37: ... kinds of neutrinos and, subsequently, to the 1988 Nobel Prize in physics. ... 15:41: ... channel. Our videos cover some of the most interesting topics in all of physics. And that’s saying something, because physics…and Space Time of course…is ... 00:20: ... Physics - and arguably all of science changed forever in 1687 when Isaac Newton ...
	2020-01-13: How To Capture Black Holes 14:13: ... Academy of Sciences. I can see it now" "This year's nobel prize in physics is split between aclaimed theoretical physicist Lee Smolin, ...
	2020-01-06: How To Detect a Neutrino 00:42: ... (𝘫𝘰𝘺𝘧𝘶𝘭 / 𝘢𝘯𝘵𝘪𝘤𝘪𝘱𝘢𝘵𝘰𝘳𝘺 𝘴𝘺𝘯𝘵𝘩 𝘨𝘶𝘪𝘵𝘢𝘳 𝘱𝘶𝘭𝘴𝘦𝘴) ♪ So Don is a particle physics researcher here at Fermilab, ♪ ♪ So Don is a particle physics researcher ... 00:54: ♪ ♪ MATT: I'm kind of obsessed with neutrinos; ♪ ♪ it seems like they could open the window into the next frontier of physics. 07:38: ... ♪ MATT (voiceover): Our best understanding of particle physics tells us that matter and antimatter ♪ (𝘭𝘰𝘸 𝘦𝘯𝘥 𝘰𝘧 𝘴𝘺𝘯𝘵𝘩 𝘧𝘢𝘥𝘦𝘴) ♪ should ... 00:42: ... (𝘫𝘰𝘺𝘧𝘶𝘭 / 𝘢𝘯𝘵𝘪𝘤𝘪𝘱𝘢𝘵𝘰𝘳𝘺 𝘴𝘺𝘯𝘵𝘩 𝘨𝘶𝘪𝘵𝘢𝘳 𝘱𝘶𝘭𝘴𝘦𝘴) ♪ So Don is a particle physics researcher here at Fermilab, ♪ ♪ So Don is a particle physics researcher here at ... 07:38: ... ♪ MATT (voiceover): Our best understanding of particle physics tells us that matter and antimatter ♪ (𝘭𝘰𝘸 𝘦𝘯𝘥 𝘰𝘧 𝘴𝘺𝘯𝘵𝘩 𝘧𝘢𝘥𝘦𝘴) ♪ should have ...
	2019-12-17: Do Black Holes Create New Universes? 07:56: ... has various arguments against this: for example, we don’t know that our physics can really be extrapolated to the insanely long timescales required for ...
	2019-12-09: The Doomsday Argument 00:52: ... our luck, and see how this controversial idea can be used to predict the physics of our universe, and also to predict the imminent demise of the human ... 01:57: ... number of theories in physics from string theory to eternal inflation predict that the cosmological ...
	2019-12-02: Is The Universe Finite? 08:10: It will NEVER recollapse unless its physics is very different to what we think. 10:38: If this lensing signal is real then maybe there’s curvature, or maybe its an indication of some unknown physics. 10:46: In the case of the discrepancy in the expansion rate, hidden physics is the great hope of many physicists. 10:53: That “missing physics” could turn out to be the subtle clue needed to push our understanding of the universe to the next level. 11:40: ... opens a tantalizing new possibility, and also hones in on the real physics of our universe - even if that means honing in on any errors we’ve made ... 12:30: ... quantum mechanics and use them to construct equations of motion, laws of physics, and systems of measurement based on the algebra of quantum ... 13:33: ... know plenty of physicsts who LOVE talking about the most complex, speculative, and philosophical ...
	2019-11-18: Can You Observe a Typical Universe? 01:11: It’s extremely important - it allows us to study the distant universe confident that its laws of physics are the same as we experience on Earth. 09:32: ... at the very least we need extra physics: for example, we need the right initial density fluctuations to evolve ... 09:46: If we then assume that the starting conditions for our universe were typical, that can tell us something about the physics of how universes are born. 13:27: ... of your students wanted to thank you for unlocking the mysteries of physics for them and to let you know their thoughts are with you by sponsoring ... 13:39: ... kind of a hero, who’s super power is to spread their vast knowledge of physics across the multi-verse and unleash a Star Trek-esque science utopia here ... 13:55: To speed that up, we've linked to your amazing lectures on particle physics and general relativity in the description. 15:37: Perhaps there's some unknown physics prinicple that demands they have exaclty the values that they do. 17:41: ... has an idea for a physics problem: iterate through the settings of the constants of nature and ... 15:37: Perhaps there's some unknown physics prinicple that demands they have exaclty the values that they do. 17:41: ... has an idea for a physics problem: iterate through the settings of the constants of nature and figure out ...
	2019-11-11: Does Life Need a Multiverse to Exist? 00:26: Our universe seems to operate according to a set of fundamental rules that we try to understand and model with the equations of our laws of physics. 01:02: ... the general theory of relativity and the standard model of particle physics, there are something like 20 independent fundamental constants of ... 01:34: ... whether there are few or many free parameters defining the physics of this universe, one thing is becoming increasingly clear: it’s good ... 10:55: ... there are many universes, and the physics of these universes can vary, then maybe we’re just in one of the few ...
	2019-10-21: Is Time Travel Impossible? 02:08: Of course we know that the laws of physics forbid faster than light travel. 09:25: But the weird thing is that we don’t know of one consistent, fundamental law in physics that prohibits true time travel. 10:04: It states that the laws of physics will always prevent time travel or allow it only when doesn’t cause paradoxes. 11:17: ... Thorn suggests there should probably be one fundamental law of physics that prohibits it - for example, the quantum vacuum may be unstable in ... 02:08: Of course we know that the laws of physics forbid faster than light travel.
	2019-10-15: Loop Quantum Gravity Explained 00:16: ... holy grail of physics is to connect our understanding of the tiny scales of atoms and ... 00:28: To connect quantum physics with Einstein’s general theory of relativity. 00:47: ... may be another way to reconcile the physics of the tiny and the gigantic - another way to a theory of quantum ... 01:46: ... mechanics, and indeed most theories in physics, involve a set of equations describing how stuff moves around, exerts ... 03:33: ... classical physics, we have variables like position, time, momentum, energy - mathematical ... 01:46: ... mechanics, and indeed most theories in physics, involve a set of equations describing how stuff moves around, exerts force, etc. ...
	2019-10-07: Black Hole Harmonics 00:53: This makes everything clean and simple enough to attempt the already notoriously complex calculations of black hole physics.
	2019-09-30: How Many Universes Are There? 02:41: To fully answer these we’d need to know the true physics of the inflaton field. 05:33: Here’s another one: do all of these bubble universes the same laws of physics, or could they be wildly different from each other? 05:43: ... number of dimensions as ours – 3 space, 1 time – but their contents and physics could be very ...
	2019-08-26: How To Become an Astrophysicist + Challenge Question! 00:00: ... because I spent the past several years Sitting on and then running the physics PhD admissions committee for one of the largest universities in the u.s ... 03:35: ... God forbid I take it easy for a bit if you're thinking about pursuing physics or astrophysics In fact many of the hard sciences then your path might ... 00:00: ... But I caught the bug and decided to try my luck at the most fun film in physics astrophysics. I Sent out applications to grad school all outside of Australia because ... 03:35: ... by the time you've taken all of that physics you probably qualify for a physics major Anyway, and while you're at it Get good grades I'm afraid this one isn't ... 00:00: ... because I spent the past several years Sitting on and then running the physics PhD admissions committee for one of the largest universities in the u.s I ...
	2019-08-19: What Happened Before the Big Bang? 05:49: Now, the behavior of this field depends on some unverified physics But a suitable inflaton field fits with some grand unified theories. 06:32: ... detailed physics requires yet more episodes, so, for now take my word for it that ... 10:33: ... time start at the Big Bang" and "What caused the Big Bang, the real physics of inflation" A couple of people mentioned George Lemaitre, who ... 12:29: ... with a rapid outward expansion rate in terms of pretty well understood physics. ... 06:32: ... detailed physics requires yet more episodes, so, for now take my word for it that inflation fits ...
	2019-08-06: What Caused the Big Bang? 00:28: Well, that's what we're covering today: the real physics of cosmic inflation. 02:09: For a hypothesis like this to be taken seriously, the physics also has to make sense. 04:42: We need some quantum physics. In fact, we need some quantum field theory. 12:34: But, by delving deeper into the physics of inflation, physicists discovered some pretty crazy predictions.
	2019-07-18: Did Time Start at the Big Bang? 01:56: ... equations that far, at least without introducing some very new physics For one thing there's also convincing observational evidence that the ...
	2019-07-15: The Quantum Internet 01:37: ... connecting the concept of information and certain fundamentals of physics - such as entropy, and also quantum ...
	2019-06-20: The Quasar from The Beginning of Time 06:43: ... of the age of the universe. We are expanding our understanding of physics to figure this one ... 07:43: Look out for Physics Girl's exploration of gravitational waves at LIGO.
	2019-06-17: How Black Holes Kill Galaxies 02:54: ... collapsing directly from the gas Now, Based on our understanding of Physics of the Universe especially the nature of Dark Matter and Dark Energy we ... 11:24: ... problems so whether you wanna learn about special relativity, quantum physics or brush up on your complex algebra and differential equations you can ... 12:55: In fact, it's longer by around 44% or one over the natural log of 2 Thanks Anthony, I guess I need to retake nuclear physics.
	2019-05-16: The Cosmic Dark Ages 13:43: ... states, in order to break quantum crypto you need to break the laws of physics - rather than just solve really hard math ...
	2019-05-01: The Real Science of the EHT Black Hole 08:55: ... process with a magneto-hydrodynamic simulation that weaves in all of the physics of fluid flow and magnetic fields, in this case with the addition of the ...
	2019-04-24: No Dark Matter = Proof of Dark Matter? 00:03: ... is invisible and formed by something not explained by modern particle physics or our understanding of gravity is completely broken the debate over ...
	2019-04-10: The Holographic Universe Explained 00:16: And we cling to this intuition, even as physics shows us that this view of reality may be only a very narrow perception. 07:15: ... other dimensions but is independent of them; b) over which the rules of physics stay the same, and c) imposes some kind of locality – for example, ... 08:05: A nice feature is that the changing the length of the strand – which defines the energy in the bond – doesn’t change the basic physics. 10:15: The strings connected to these branes are scale invariant, so their length and energy can vary without changing the physics. 10:37: ... field theory like the ones that gives us our standard model of particle physics – a Yang-Mills theory, but with supersymmetry added ... 12:21: The techniques of AdS/CFT correspondence are even extended to disparate fields like nuclear and condensed matter physics. 07:15: ... other dimensions but is independent of them; b) over which the rules of physics stay the same, and c) imposes some kind of locality – for example, elements ...
	2019-04-03: The Edge of an Infinite Universe 02:00: ... at infinity turns out to be not just useful for doing calculations in physics, but may be as real as the physical universe it ... 13:32: ... space – also called the “bulk” - as separate spacetimes with their own physics. ... 16:01: ... I also read an interesting take by Alan Rominger on physics stackexchange, in which he suggests that the shrinking cosmological ...
	2019-03-20: Is Dark Energy Getting Stronger? 14:45: ... Culinary Institute of America - and the courses cover everything, from physics and multivariable calculus to learning how to play chess or become a ...
	2019-03-06: The Impossibility of Perpetual Motion Machines 00:04: Bad ideas come and go in physics. 02:07: In every case you can find a subtle bit of physics that the designers overlooked. 08:48: ... have to refer you to our entire playlist on the quantum vacuum for the physics, but the important point is that any energy of the vacuum is exactly the ... 09:30: In fact the worst of them wouldn’t have physics or engineering chops to build a decent over-balance wheel. 15:48: John Rodriguez wished he'd've known that the Physics skill tree is required to unlock the Wizard class. 16:13: ... 0% on your GREs, and yeah, first authorship on a paper in theoretical physics from that high-school science fair ... 15:48: John Rodriguez wished he'd've known that the Physics skill tree is required to unlock the Wizard class.
	2019-02-07: Sound Waves from the Beginning of Time 01:04: ... a growing conflict in its measured value, which hints at strange new physics. ... 14:12: ... "It can't be real because it would break our current understanding of physics" ...is hardly a good argument. Now, while I agree that this isn't a hard ...
	2019-01-30: Perpetual Motion From Negative Mass? 01:24: Let’s start with mass in Newton’s physics. 12:28: ... exist and we want to save the equivalence principle and the rest of physics, we need to conclude that negative mass of any type can’t ... 13:11: Welcome to the land of unresolved physics.
	2019-01-24: The Crisis in Cosmology 11:17: ...but it's possible there's still something we haven't thought of yet Second: there's some unknown physics... 13:02: ...to investigate the mysterious physics of dark energy, dark matter,... 16:03: ...but the laws of Physics are the same.
	2019-01-16: Our Antimatter, Mirrored, Time-Reversed Universe 00:03: ... one these symmetries were found to be broken threatening to break all of physics along with ... 00:29: ... his famous lectures on physics Richard Feynman talks about what it means to expect the universe to be ... 00:42: ... way except counterclockwise - our intuition would be wrong. The laws of physics and so the laws of clocks are not symmetric to this sort of parity ... 02:02: ... time and this symmetry lies at the foundations of quantum field theory physics must work the same if we flip all of these properties if not physics as ... 03:02: ... tell whether you're in this universe or in a CP transformed universe or physics should work the same theoretically but don't get too comfortable we ... 08:43: ... Time symmetry is out the window, theoretically. That sounds bad, isn't physics supposed to work the same whether we go forwards or backwards in time? ... 10:54: ... the direction of the interaction changed something fundamental about the physics indicating a violation of T symmetry. But remember, killing T symmetry ... 00:29: ... his famous lectures on physics Richard Feynman talks about what it means to expect the universe to be identical ... 02:02: ... we know it goes out the window which does seem like a big deal. To save physics, Richard Feynman proposes that we build a copy of our clock out of ... 00:29: ... his famous lectures on physics Richard Feynman talks about what it means to expect the universe to be identical in the ... 02:02: ... we know it goes out the window which does seem like a big deal. To save physics, Richard Feynman proposes that we build a copy of our clock out of ... 08:43: ... Time symmetry is out the window, theoretically. That sounds bad, isn't physics supposed to work the same whether we go forwards or backwards in time? well as we ...
	2019-01-09: Are Dark Matter And Dark Energy The Same? 04:02: In physics, we usually assume that mass is always positive. 04:26: But for now let’s follow the paper’s argument, which is based on Newtonian physics.
	2018-12-20: Why String Theory is Wrong 02:07: Modern string theory is the convergence of many beautiful ideas in physics, each of which feel right in their own way. 07:04: A duality in physics is when two apparently different mathematical theories proved to represent the same physical process. 08:55: ... least, they give exactly the same physics, either winding number times radius, or mode number divided by radius can ... 13:08: ... strings, and so a different family of particles and different laws of physics to go with ... 15:14: ... the physics required to understand string theory is tough thankfully there are ... 15:37: ... whether you want to learn about special relativity in quantum physics or brush up on your complex algebra and differential equations you can ... 15:14: ... the physics required to understand string theory is tough thankfully there are online tools ...
	2018-12-12: Quantum Physics in a Mirror Universe 00:02: ... attractive faces all look the same when flipped left to right in physics a symmetry is when the laws of physics are unchanged due to some ...
	2018-11-21: 'Oumuamua Is Not Aliens 13:37: Whether you want to learn about astronomy, quantum physics, or even artificial neural networks, you can learn more at brilliant.org/spacetime. 17:03: Many of you are impressed by Ice Cube's incredible contributions to particle physics and how the guy has had such a diverse career.
	2018-11-14: Supersymmetric Particle Found? 00:03: ... Collider running out of places to look for clues to a deeper theory of physics, we're going to need a bigger particle ... 00:25: Physics is currently in a weird place. 00:49: The LHC has thoroughly tested the standard model of particle physics. 01:08: Proposals for such grand unified theories proliferate unconstrained by even the tiniest hint of new physics from the LHC. 01:25: This is one that physics had really hoped to nail down with the Large Hadron Collider. 04:11: Unfortunately, for particle physics experiments cosmic rays at these energies are extremely rare.
	2018-11-07: Why String Theory is Right 00:06: ... that will unify quantum mechanics and gravity and so unify all of physics into one great, glorious theory of ... 07:28: ... the physics of a system doesn't care about how you define particular coordinates or ... 07:52: It's when you can redefine some variable in different ways everywhere in space and still get the same physics. 08:19: ... in different ways at different points in space without screwing up the physics. ... 08:32: It breaks various laws of physics. 09:36: It says that changing the scale of space itself shouldn't affect the physics of strings.
	2018-10-31: Are Virtual Particles A New Layer of Reality? 01:22: This insight led to the discovery of all quantum physics. 02:01: So quantum field theory is the machinery behind the standard model of particle physics. 05:30: In fact, they ignore a lot of the physics of real particles. 12:18: ... photons, it turned out that a mathematical artifact represented new real physics-- the quantum nature of the photon in that ...
	2018-10-18: What are the Strings in String Theory? 00:33: In physics, we like to reduce our description of the mechanics of reality down to the simplest possible form. 00:47: This is why the standard model of particle physics is considered incomplete. 02:32: A lot of work went into figuring out a quantum theory for the strong interaction based on the physics of strings.
	2018-10-10: Computing a Universe Simulation 00:00: [MUSIC PLAYING] Physics seems to be telling us that it's possible to simulate the entire universe on a computer smaller than the universe. 01:04: ... particles, atoms, and ultimately to all of the emergent laws of physics, physical structure, and ultimately the ... 02:07: ... automata and pan computationalism and, in general, the idea of digital physics and an informational ... 02:50: The laws of physics prescribe fundamental limits on both. 11:41: ... even more is that we can use our current incomplete understanding of physics, in particular very standard ideas on general relativity and quantum ... 01:04: ... particles, atoms, and ultimately to all of the emergent laws of physics, physical structure, and ultimately the ... 02:50: The laws of physics prescribe fundamental limits on both.
	2018-10-03: How to Detect Extra Dimensions 06:55: ... your theory just right, and you get normal physics for matter and radiation in three spatial dimensions-- for example, the ... 12:23: ... week, we talked about the hardest problem in physics, exploring the conflicts between general relativity and quantum theory ...
	2018-09-20: Quantum Gravity and the Hardest Problem in Physics 00:17: After a century of work by the greatest minds in all of physics, why does this union still elude us? 00:24: [MUSIC PLAYING] The first few decades of the 20th century was a time of miracles for physics. 01:05: In the century since that golden era of physics, we've been trying to reconcile the two without success. 12:11: ... and other ingenious approaches to crack the greatest problem in modern physics, the quest for a theory of quantum ... 01:05: In the century since that golden era of physics, we've been trying to reconcile the two without success.
	2018-09-05: The Black Hole Entropy Enigma 00:46: That theory is one of the most thoroughly tested in all of physics, which means we should probably believe in black holes. 01:01: And yet if black holes exist, which apparently they do, they contradict other theories in physics that are as sacred as general relativity. 05:42: I thought physics was supposed to be hard?
	2018-08-23: How Will the Universe End? 06:06: That's a cool bit of physics that deserves its own episode. 06:13: According to the standard model of particle physics, they should last forever. 12:23: Vacuum decay may drop the universe to an even lower energy state, wiping out the laws of physics as we know them. 13:37: Two cosmologist friends of mine get into these and other deep physics stuff on their new channel "Alas Lewis and Barnes--" link in the description. 17:35: It's also where I'm a professor of physics and arithmancy-- sorry, astronomy. 13:37: Two cosmologist friends of mine get into these and other deep physics stuff on their new channel "Alas Lewis and Barnes--" link in the description.
	2018-08-15: Quantum Theory's Most Incredible Prediction 00:07: Let's talk about the best evidence we have to the theories of quantum physics truly represent the underlying workings of reality. 01:46: And those predictions are the most precisely tested and thoroughly verified in all of physics. 11:48: But that prediction is the most accurately verified prediction in the history of physics. 11:54: At it's heart, physics is the study of the natural world.
	2018-08-01: How Close To The Sun Can Humanity Get? 11:03: ... because it took 100 years and some of the greats of physics to understand the Maxwell's demon conundrum, doesn't necessarily mean ... 11:30: Physics is not intuitive and takes real methodical work to verify those instincts. 14:03: Did you think metaphorical physics demons are limited to our paltry three dimensions?
	2018-07-25: Reversing Entropy with Maxwell's Demon 00:31: As we saw in our episode on the physics of life, structure can develop in one region even as the entropy of the universe rises. 13:20: ... quantum cellular automata, which led him to a Wikipedia page on digital physics, and now he's reading about ... 01:31: ... the number of possible configurations of particles-- or microstates in physics-speak-- that could produce the same observed set of macroscopic observables, or ...
	2018-07-18: The Misunderstood Nature of Entropy 00:28: [MUSIC PLAYING] Entropy is surely one of the most intriguing and misunderstood concepts in all of physics. 00:47: It's statistical in nature, and yet, may ultimately be more fundamental and unavoidable than any other law in physics. 04:21: Let's add some physics speak. 05:06: ... try out all possible microstates that are possible given the laws of physics. ... 10:33: We talked a little about this in our episode on the physics of life, where we saw how entropy drives both the increase and decay of complexity. 11:35: Learning about physics is much more than facts and memorizing. 04:21: Let's add some physics speak.
	2018-07-11: Quantum Invariance & The Origin of The Standard Model 00:03: ... standard model of particle physics is the most successful, most accurate physical theory ever developed, ... 00:33: Our laws of physics are equations of motion tuned by the fundamental constants. 00:55: The most amazing example of this is the standard model of particle physics. 10:49: And following those mathematical labyrinths reveals physical theory with stunning predictive power, like the standard model of particle physics.
	2018-07-04: Will A New Neutrino Change The Standard Model? 02:10: ... going to drop through the standard model of particle physics, electric charge and antimatter, the bizarreness of quantum chirality and ... 02:25: ... the standard model of particle physics-- as we'll see in upcoming episodes, these particles are divided into the ... 10:17: ... this one is real, then something is missing in our understanding of physics, and glitches between experiment and theory are exactly how new physics ... 02:10: ... going to drop through the standard model of particle physics, electric charge and antimatter, the bizarreness of quantum chirality and the ...
	2018-06-20: The Black Hole Information Paradox 01:06: This is the black-hole information paradox, and it's one of the biggest unsolved problems in physics. 05:14: The search for the resolution to this paradox has led to some incredible new physics and some pretty astounding ideas. 11:11: ... in the theory, can lead to massive discoveries and complete reframing of physics. ... 12:07: ... has a really comprehensive series on gravitational physics that will take you from Newton's law all the way through gravitational ... 12:28: Learning about physics is much more than facts and memorizing.
	2018-06-13: What Survives Inside A Black Hole? 00:07: I've got a physics joke for you. 01:32: ... paradox, one of the greatest unanswered questions in modern physics, and also the gateway to black-hole thermodynamics and the holographic ... 04:46: There's an extremely important law in physics that describes how the universe remembers the contents of a region of space. 06:16: If you've studied some introductory physics, you might remember that the gravitational and electric fields have something in common. 00:07: I've got a physics joke for you.
	2018-05-23: Why Quantum Information is Never Destroyed 00:07: If you have perfect knowledge of every single particle in the universe, can you use the laws of physics to rewind all the way back to the Big Bang? 00:23: [MUSIC PLAYING] The laws of physics are equations of motion. 01:28: An important tool for making predictions with the laws of physics are the conservation laws that we derive from them. 03:25: It's possible for the future to be perfectly predictable by the laws of physics while the past is not. 10:55: I'm talking black hole thermodynamics and some pretty deep particle physics. 11:03: Noether's theorem predicts the conservation laws of physics from the symmetries of nature. 13:07: In true mathematical fashion, her work was far more general than anything we deal with in physics.
	2018-05-16: Noether's Theorem and The Symmetries of Reality 00:07: Conservation laws are among the most important tools in physics. 00:23: [MUSIC PLAYING] Conservation laws are the cheat codes of physics. 00:32: They make it possible to solve physics problems that would otherwise be painfully difficult or even impossible. 07:15: As long as we can identify that system's symmetries, this is useful in cosmology, but it's also useful in quantum physics. 07:31: For example, another conserved quantity in physics is electric charge. 08:22: The entire standard model of particle physics is what we call a gauge theory. 08:42: Emmy Noether was one of the greatest mathematicians of the golden age of modern physics. 08:46: Yet, she gained little public recognition in her time and is still only known to the more eager students of math and physics. 09:27: ... be thankful that she took a moment to offer a little of her genius to physics, taking us a big step closer to understanding the fundamental workings of ... 12:47: ... we only ask that you start with a passing familiarity with quantum physics and the etymological foundations of the languages of ... 00:32: They make it possible to solve physics problems that would otherwise be painfully difficult or even impossible.
	2018-04-25: Black Hole Swarms 10:13: That is, the laws of physics allow it, the laws of engineering may beg to differ.
	2018-04-18: Using Stars to See Gravitational Waves 08:56: ... you haven't already done some serious university-level physics, then mastering Newtonian gravity is also your next step toward ... 09:07: Happily, you don't need to do a physics degree. 09:21: All of brilliant.org's many courses on math and physics use the best pedagogical practices. 10:22: Our episode was on the physics of life. 09:07: Happily, you don't need to do a physics degree.
	2018-04-11: The Physics of Life (ft. It's Okay to be Smart & PBS Eons!) 00:11: Actually, the laws of physics themselves may demand it. 00:36: But we all know that chemistry and biology are just applied physics. 00:40: So can we approach the question of the origin and the very nature of life from the point of view of physics? 06:29: ... also dispersed into every form it can take consistent with the laws of physics. ...
	2018-03-28: The Andromeda-Milky Way Collision 11:03: And finally a huge shout out to Springfield High School's two AP physics classes, led by the brilliant and dedicated Wesley Morgan.
	2018-03-21: Scientists Have Detected the First Stars 00:43: The same result also hints at brand new physics that may help us explain the nature of dark matter. 05:03: This is where the new physics comes in.
	2018-03-15: Hawking Radiation 00:20: He made profound contributions across physics from quantum theory to cosmology.
	2018-02-28: The Trebuchet Challenge 00:13: [ELECTRONIC MUSIC] In a recent episode, we talked about one of the most powerful and misunderstood concepts in all of physics. 00:31: Physics steals words all the time. 00:41: In physics, energy is still intangible. 00:47: But the energy of physics is anything but vague. 00:41: In physics, energy is still intangible. 00:31: Physics steals words all the time.
	2018-02-14: What is Energy? 00:41: But that intuitive sense has inspired us to discover the most powerful and useful concept in all of physics. 00:49: In physics, energy is not a substance nor is it mystical energy, it's a number, a quantity. 01:53: Newtonian mechanics had only recently revolutionized physics. 09:26: And the Lagrangian quantum field theory is the basis for high-energy particle physics. 09:53: Energy is conserved if the physics of a system, for example, the nature of a force field, stays the same over time. 10:11: Physics works the same whether you're here or a kilometer that way. 11:04: Hey, every good physics lesson should end with the prof saying that everything they just told you is wrong. 11:53: The Great Courses Plus is actually a great resource for solidifying your physics and astronomy education. 11:59: A good example is the course Physics and Our Universe by Richard Wolfson. 12:04: It gives an overview of all of the core material of college intro physics courses. 00:49: In physics, energy is not a substance nor is it mystical energy, it's a number, a quantity. 11:04: Hey, every good physics lesson should end with the prof saying that everything they just told you is wrong. 10:11: Physics works the same whether you're here or a kilometer that way.
	2018-01-24: The End of the Habitable Zone 10:00: Listening to me yap on about space and physics may be fun and all, but that's not enough if you really want to learn this stuff. 10:09: To really gain intuition about our often very unintuitive universe, you need to start solving problems in physics, math, and astronomy. 10:22: They've built problem based courses a huge range of subjects, including a lot of math but also physics, astronomy, and computer science. 10:09: To really gain intuition about our often very unintuitive universe, you need to start solving problems in physics, math, and astronomy.
	2018-01-17: Horizon Radiation 00:00: ... PLAYING] The most successful theory in physics combines the weirdness of quantum mechanics with, well, the weirdness of ... 00:37: Different observers might disagree about speeds, lengths, or times, but the laws of physics should be the same for everyone. 01:34: ... fundamental laws of physics shouldn't change if we go near a black hole or if we start accelerating, ... 02:56: The laws of physics, as we know them, are the rules defining how particles interact. 03:00: For the laws of physics to be consistent, the fundamental properties of these fields must be the same for all observers. 03:44: ... between inertial reference frames in a way that leaves the laws of physics and the nature of the vacuum ... 03:55: ... tries to write down these equations, in order to preserve the laws of physics, they find they have to redefine the nature of the vacuum, ... 09:04: Here, the field operator represents the field properties or the laws of physics. 10:38: We need to rejig the field operator for the laws of physics to be consistent. 00:00: ... PLAYING] The most successful theory in physics combines the weirdness of quantum mechanics with, well, the weirdness of special ... 01:34: ... fundamental laws of physics shouldn't change if we go near a black hole or if we start accelerating, but ...
	2018-01-10: What Do Stars Sound Like? 09:23: Now, listening to me yap on about space and physics may be fun and all, but that's not enough if you really want to learn this stuff. 09:32: To really gain intuition about our often very unintuitive universe, you need to start solving problems in physics, math, and astronomy. 09:46: They built problem-based courses on a huge range of subjects, including a lot of math, but also physics, astronomy, and computer science. 09:32: To really gain intuition about our often very unintuitive universe, you need to start solving problems in physics, math, and astronomy.
	2017-12-06: Understanding the Uncertainty Principle with Quantum Fourier Series 04:02: In the physics of sound, time and frequency have a special relationship because any sound wave can be represented in terms of one or the other. 07:57: To answer this, we need one more bit of physics; the interpretation of the wave function itself, known as the Born rule.
	2017-11-22: Suicide Space Robots 13:33: But given the fact that the EmDrive defies the laws of physics, the true source of the thrust almost certainly lies within these systematics.
	2017-11-08: Zero-Point Energy Demystified 01:05: ... values of vacuum energy is one of the greatest unsolved problems in physics. ... 01:17: Despite this minor glitch, quantum field theory is arguably the most successful theory in all of physics in terms of sheer predictive power. 02:00: Let's start with the physics.
	2017-11-02: The Vacuum Catastrophe 00:03: The most successful theory in all of physics is arguably quantum field theory. 01:23: It's one of the greatest unsolved problems in physics. 03:21: This is where our understanding of physics breaks down. 06:19: An extension to the standard model of particle physics called supersymmetry may partially allow this. 03:21: This is where our understanding of physics breaks down. 06:19: An extension to the standard model of particle physics called supersymmetry may partially allow this.
	2017-10-25: The Missing Mass Mystery 00:09: The missing baryon problem put into question understanding of the physics of the Big Bang. 10:10: ... matter was so wrong, then it would mean the our understanding of the physics of the Big Bang was seriously ...
	2017-10-19: The Nature of Nothing 00:07: This episode of "Space Time" is about nothing, because it turns out that nothing is one of the most interesting somethings in all of physics. 08:08: The calculation of the size of the Lamb shift is now one of the most accurate predictions in all of physics. 10:44: This crazy discrepancy between theory and observation is considered by some to be one of the greatest unsolved mysteries in physics. 12:03: As it happens, Benjamin Schumacher has a great episode on absolute zero in his course, Impossible-- Physics Beyond the Edge. 15:47: The Simulacra notes that physics has reached the point where it's working on nothing at all.
	2017-10-04: When Quasars Collide STJC 11:06: The standard model of particle physics contains 26 independent parameters, things like the coupling constants and the masses of each particle type. 11:50: ... entirety of our universe-- or even the multiverse-- has the same laws of physics, including the same fundamental ... 12:39: Take whatever math and physics they offer. 12:49: Start a Bachelor of Science degree someone with a decent physics program. 12:54: Major in physics, and work your butt off. 13:01: Keep working your butt off, and you'll be making real contributions to physics before you even finish your doctorate. 13:08: You should also talk to teachers and even contact university physics departments to get more career mentorship. 11:50: ... entirety of our universe-- or even the multiverse-- has the same laws of physics, including the same fundamental ... 12:49: Start a Bachelor of Science degree someone with a decent physics program.
	2017-09-28: Are the Fundamental Constants Changing? 00:06: The laws of physics are the same everywhere in the universe-- at least, we astrophysicists hope so. 00:30: [MUSIC PLAYING] The laws of physics are the relationships we observe between space and time, and the fields and particles that occupy it. 00:50: ... example, the standard model of particle physics is comprised of equations that predict the existence and behavior of the ... 03:54: And its numerical value is one of the most precisely measured quantities in physics, precise to one part in 4 billion. 06:16: OK, but what's all this got to do with the laws of physics changing? 11:04: We may one day find that our sacred laws of physics and their underlying constants aren't so constant after all beyond our little patch of space time. 06:16: OK, but what's all this got to do with the laws of physics changing? 03:54: And its numerical value is one of the most precisely measured quantities in physics, precise to one part in 4 billion.
	2017-09-13: Neutron Stars Collide in New LIGO Signal? 02:32: We talk about the bizarre physics of these quantum and gravitational monsters in this video.
	2017-08-30: White Holes 09:12: ... to build a white hole in general relativity, there are other laws of physics that the universe needs to obey-- for example, the second law of ...
	2017-08-10: The One-Electron Universe 00:01: ... PLAYING] Sometimes, seemingly crazy ideas in physics lead to the most profound advances-- for example, the idea that every ... 01:46: ... of quantum mechanics, which won him the 1965 Nobel Prize in Physics. ... 00:01: ... PLAYING] Sometimes, seemingly crazy ideas in physics lead to the most profound advances-- for example, the idea that every ...
	2017-08-02: Dark Flow 01:27: The laws of physics work the same no matter your speed. 11:13: The final directions of motions can be anything within the realms of possibility of physics. 12:14: Squid Master started studying physics and got a tattoo of a Feynman diagram, then switched majors to economics. 12:21: Squid, I'm sorry that you and physics broke up, but that's a relationship that leaves its mark on you for life. 01:27: The laws of physics work the same no matter your speed.
	2017-07-26: The Secrets of Feynman Diagrams 00:03: ... Feynman diagrams revolutionized particle physics by providing a simple system to sort out the infinite possibilities when ...
	2017-07-12: Solving the Impossible in Quantum Field Theory 11:41: The results led to the standard model of particle physics.
	2017-07-07: Feynman's Infinite Quantum Paths 04:14: There was absolutely no physics in this description so far, not even the limit of the speed of light. 04:21: The amazing thing about the path integral formulation is that Feynman added one and only one piece of real physics. 04:35: That piece of physics was the principle of least action. 04:39: And it was borrowed from old-school classical physics.
	2017-06-28: The First Quantum Field Theory 00:06: ... Feynman called it "the jewel of physics." Of all of our mathematical descriptions of the universe, this one has ... 04:51: Quantum physics may have started with Planck's discovery of the quantum nature of light. 09:37: It is one of the most carefully tested theories in all of physics. 10:10: No other theory in physics has done so well.
	2017-06-21: Anti-Matter and Quantum Relativity 11:03: ... field theory and the development of the standard model of particle physics, which have become our best description of the underlying workings of ... 15:08: It explores the key concepts in quantum physics through a description of the most important quantum experiments ever made.
	2017-05-31: The Fate of the First Stars 04:20: OK, physics time-- the cores of stars are under extreme pressure due to the gravitational crush of their great mass.
	2017-05-03: Are We Living in an Ancestor Simulation? ft. Neil deGrasse Tyson 14:53: But it's important to remember that the laws of physics are time reversible.
	2017-04-26: Are You a Boltzmann Brain? 00:35: Ludwig Boltzmann revolutionized physics in the latter half of the 19th century.
	2017-01-25: Why Quasars are so Awesome 10:35: ... Carroll's Mysteries of Modern Physics-- Time builds up to some excellent lectures on the nature of time in ...
	2017-01-19: The Phantom Singularity 01:14: Infinite force means infinite acceleration, which means-- well, physics breaks.
	2017-01-11: The EM Drive: Fact or Fantasy? 00:35: We've avoided the EmDrive in the past because the results were inconclusive, and the proposed physics was either very wrong or way too speculative. 06:39: Any result that requires new exotic physics demands that all mundane causes be exhaustively eliminated beyond reasonable doubt. 08:55: The second most likely explanation is that it will be explainable with old physics. 11:33: Physics works the same everywhere. 11:51: Intellectual capacity may scale upwards indefinitely, but the availability of new types of physics to power new technologies has a limit. 06:39: Any result that requires new exotic physics demands that all mundane causes be exhaustively eliminated beyond reasonable doubt. 11:33: Physics works the same everywhere.
	2016-12-21: Have They Seen Us? 05:52: But surely aliens are working with the same physics that we are.
	2016-12-08: What Happens at the Event Horizon? 00:16: But there is a powerful tool in physics that can give us real intuition into the true nature of the event horizon. 07:01: Now that we've nailed the Penrose diagram, we can use it to do some serious black hole monkey physics. 11:54: For an excellent overview of basically all physics, I really liked Richard Wolfson's "Physics and the Universe" course. 13:27: ... for those of you thinking of attending grad school in physics, I'll be talking about studying physics at a professional level at the ... 13:53: This is the closest I've seen a YouTube comment section come to looking like a Q&A session after a professional physics seminar. 13:27: ... for those of you thinking of attending grad school in physics, I'll be talking about studying physics at a professional level at the City ... 13:53: This is the closest I've seen a YouTube comment section come to looking like a Q&A session after a professional physics seminar.
	2016-11-30: Pilot Wave Theory and Quantum Realism 14:07: ... on the as-yet-unknown physics of strange matter, these strangelets may even be expected to be more ...
	2016-11-16: Strange Stars 00:14: [MUSIC PLAYING] The mathematics of modern physics that emerged through the 20th century explained so much about our universe. 09:38: Who knows what other strange denizens lurk in yet to be discovered laws of physics?
	2016-11-02: Quantum Vortices and Superconductivity + Drake Equation Challenge Answers 00:02: ... year's Nobel Prize in Physics went to three researchers for major breakthroughs in understanding the ...
	2016-10-26: The Many Worlds of the Quantum Multiverse 00:09: A huge outstanding question is when and why does the weirdness of quantum mechanics give way to classical physics. 11:12: This is Dianna from Physics Girl right here on Space Time. 11:51: One thing I really like about Physics Girl is it explains complex stuff in such understandable ways. 12:07: I would love you to do an episode in which you explain the five most jargony and commonly encountered modern physics words in simple English. 12:35: And keep watching Physics Girl because we're going to hold you to that, Dianna. 11:12: This is Dianna from Physics Girl right here on Space Time. 11:51: One thing I really like about Physics Girl is it explains complex stuff in such understandable ways. 12:35: And keep watching Physics Girl because we're going to hold you to that, Dianna.
	2016-10-12: Black Holes from the Dawn of Time 03:16: Some highly speculative Big Bang physics also predicts primordial black holes.
	2016-09-21: Quantum Entanglement and the Great Bohr-Einstein Debate 00:55: ... the time they grow up and go to college to study physics, the notion of object permanence is so deeply embedded that we don't even ... 01:04: ... at it is a pretty fundamental implied assumption behind all of classical physics. ... 01:19: This notion that the universe exists independent of the mind of the observer is called realism in physics. 00:55: ... is so deeply embedded that we don't even bother teaching it in physics 101. ...
	2016-09-14: Self-Replicating Robots and Galactic Domination 00:33: Stars for the most part act very star-like, their brightnesses and colors slavishly following the equations of stellar physics.
	2016-09-07: Is There a Fifth Fundamental Force? + Quantum Eraser Answer 02:20: Such a particle would be a mild extension of the standard model, not too crazy, but certainly brand new physics.
	2016-08-24: Should We Build a Dyson Sphere? 10:58: ... the answer to the quantum eraser lottery challenge and some intriguing physics ...
	2016-08-03: Can We Survive the Destruction of the Earth? ft. Neal Stephenson 02:06: ... need is a world-renowned imaginer of possible futures, someone with a physics degree and recent expertise in rescuing humanity from doomsday ...
	2016-07-27: The Quantum Experiment that Broke Reality 03:05: But here, we get to one of the craziest experimental results in all of physics.
	2016-07-20: The Future of Gravitational Waves 00:09: That's what I'm going to do now and following that, I'll get to the solution to the nuclear physics challenge question.
	2016-06-29: Nuclear Physics Challenge 00:06: We've been talking about quantum mechanics recently, and I think we're ready to do a bit of recreational nuclear physics. 03:54: Make sure you use the subject line Nuclear Physics Challenge to be in the running, because we filter by subject line.
	2016-06-22: Planck's Constant and The Origin of Quantum Mechanics 00:03: ... Plus." The Planck constant defines the size scale at which the familiar physics of our macroscopic reality gives way to the weirdness of the quantum ... 04:49: However, the deep physics behind this shape remained a mystery. 05:20: In physics speak-- at equilibrium, energy is evenly spread between all possible energy states. 06:11: It was catastrophic because it meant that something was fundamentally wrong with the classical physics that went into the Rayleigh-Jeans law. 06:19: The problem turned out to be that in classical physics, everything can be infinitely divided. 09:23: As usual, it took Albert Einstein to fully understand the physics behind Planck's strange quantized vibrations. 10:13: It got him the 1921 Nobel Prize in Physics, shortly following Planck's Nobel of 1918. 05:20: In physics speak-- at equilibrium, energy is evenly spread between all possible energy states.
	2016-06-15: The Strange Universe of Gravitational Lensing 00:55: We perceive illusory and distorted images as our mind's eye tries to enforce over-simplistic physics on a complex reality. 09:51: We recently started talking about quantum physics by looking at the bizarre phenomena of quantum tunneling.
	2016-06-08: New Fundamental Particle Discovered?? + Challenge Winners! 00:00: ... one that does not fit anywhere within the standard model of particle physics. ... 05:05: So space and time, really anything physics or astrophysics.
	2016-05-25: Is an Ice Age Coming? 13:17: Now, Physics Girl has an excellent video describing this effect.
	2016-04-27: What Does Dark Energy Really Do? 07:10: However, this accelerating expansion can be explained with the same bit of math, the cosmological constant, pointing to the same physics, dark energy.
	2016-04-20: Why the Universe Needs Dark Energy 09:00: ... any of you are looking to brush up on your basic physics, or you're looking for some more great physics content, PBS Digital ... 09:09: "Crash Course Physics" is hosted by Dr. Shini Somara, a mechanical engineer and fluid dynamicist. 10:43: Tomek Wooff would like to know what the job prospects for bachelor's or master's graduates in physics. 10:51: So actual research jobs in physics typically require a PhD. 10:56: But if you have a knack for math and a passion for physics, that shouldn't deter you. 11:30: Physics graduates are hot recruits, due to their killer problem-solving skills. 09:00: ... to brush up on your basic physics, or you're looking for some more great physics content, PBS Digital Studios has an awesome new show for ... 11:30: Physics graduates are hot recruits, due to their killer problem-solving skills. 10:51: So actual research jobs in physics typically require a PhD. 11:35: ... Association of Colleges and Employers found that new graduates from physics-major programs have starting salaries higher than any other science ...
	2016-03-23: How Cosmic Inflation Flattened the Universe 06:44: So what sort of mad physics could do something like that?
	2016-03-16: Why is the Earth Round and the Milky Way Flat? 00:35: All of these things obey the same laws of physics and all of them are held together by gravity.
	2016-03-02: What’s Wrong With the Big Bang Theory? 01:06: ... we got down to that size by rewinding the laws of physics, and in particular running the math of Einstein's general theory of ... 04:16: And here, physics kind of goes out the window.
	2016-02-24: Why the Big Bang Definitely Happened 01:15: ... descriptions are in the mathematical language of physics, and they build on and are supported by many experiments, from ... 02:13: See, this is the wonder of physics. 02:15: ... universe, or even just a tiny part of the universe, and run the laws of physics forward in time to predict the ... 07:37: ... the universe looks like in its very first second, our understanding of physics is still good down to a crazily early age of 10 to the power minus 32 ... 08:10: We can check that our physics works in these conditions, and so we have a lot of confidence in the predictions of that physics. 08:19: Earlier than 10 to the power of minus 32 seconds, we just can't produce the energies needed to test our understanding of physics in those conditions. 02:15: ... universe, or even just a tiny part of the universe, and run the laws of physics forward in time to predict the ... 08:10: We can check that our physics works in these conditions, and so we have a lot of confidence in the predictions of that physics.
	2016-02-11: LIGO's First Detection of Gravitational Waves! 05:42: These observations are going to tell us a ton about how black holes grow and about the physics of black holes themselves. 07:11: It's a new window on the universe that will reveal phenomena and physics that we never expected.
	2016-02-03: Will Mars or Venus Kill You First? 10:00: We just don't understand the physics well enough to confidently project the size of the universe to infinitesimal smallness, to a singularity. 10:20: ... wonders where the people who study fundamental physics sometimes just do a Rick and Morty, as in they say everything is an ...
	2015-12-16: The Higgs Mechanism Explained 03:00: ... of those neutrino oscillations the won the 2015 Nobel Prize in physics. ...
	2015-12-09: How to Build a Black Hole 09:34: Physics cannot yet tell us.
	2015-11-25: 100 Years of Relativity + Challenge Winners! 01:01: The elegance of this theory has inspired so many students of physics to follow in Einstein's path exploring the mysteries of the universe.
	2015-10-28: Is The Alcubierre Warp Drive Possible? 06:49: Even the Kugelblitz engine, the black hole drive, has fewer physics hurdles than the warp drive.
	2015-10-15: 5 REAL Possibilities for Interstellar Travel 04:36: It's rocket science and nuclear physics, so you know, hard.
	2015-10-07: The Speed of Light is NOT About Light 01:01: To understand this, let's first get our heads around two of the most important insights in physics ever. 02:17: And there's this sense that physics might be done, except there are hints of something horribly wrong lurking in the math-- actually, two hints. 06:00: Under our new transformation, the laws of physics will work the same regardless of position, orientation, or velocity.
	2015-09-30: What Happens At The Edge Of The Universe? 07:31: Are the laws of physics, or even the number of dimensions, the same?
	2015-09-23: Does Dark Matter BREAK Physics? 00:09: My name is Matt and this is "SpaceTime." Physics has a problem. 01:41: Two, not so great, dark matter is a type of particle that's beyond our current understanding of particle physics. 02:02: The standard model of particle physics is basically the periodic table of known fundamental particles and fields. 03:10: Either particle physics is wrong, or at least horribly incomplete, in that we're missing 80% to 90% of the mass in the universe, or Einstein is wrong. 05:35: Dark matter exists and it represents, if not broken, at least incomplete particle physics. 06:41: This is a funky extension to the standard model of particle physics.
	2015-08-27: Watch THIS! (New Host + Challenge Winners) 00:30: Now there's another force that comes up in elementary physics that's also proportional to the distance of a particle from an equilibrium point. 04:40: You know, physical intuition is incredibly important and you can go a really long way verbally talking through a physics problem.
	2015-08-19: Do Events Inside Black Holes Happen? 12:23: ... doesn't change the fact that a lot of people, including physicists and physics teachers, as you've seen in our comments, and me had this mechanism ... 12:37: ... ErgoCogita, and Arthur Withheld all asked how contemporary students of physics and teachers of physics could get this information so ... 12:52: He's a physics teacher and he said, look, there are some things that we just don't focus on in our training because they seem kind of trivial. 12:23: ... doesn't change the fact that a lot of people, including physicists and physics teachers, as you've seen in our comments, and me had this mechanism wrong in our ...
	2015-08-12: Challenge: Which Particle Wins This Race? 00:09: This time around, you're going to need some math, and you'll need to be familiar with high school level physics. 00:17: For the purposes of this challenge, I want you to treat gravity and all physics Newtonianly. 02:40: ... a familiar non-gravitational force that you also study in high school physics. ... 05:35: I encourage you to talk to your friends about it, because physics is a social activity. 00:17: For the purposes of this challenge, I want you to treat gravity and all physics Newtonianly.
	2015-08-05: What Physics Teachers Get Wrong About Tides! 03:09: And in Newtonian physics, it's fake. 11:12: And figuring out how to do that is just still an unsolved problem in physics.
	2015-07-22: SPECIAL ANNOUNCEMENT + Flat Spacetime Geometry Comments 01:47: That's what studying physics is like when you're trying to do it at any depth, even if you're not getting into the math. 02:58: Remember, in Newtonian physics, there's no unambiguous answer to that question, because you can only talk about motion relative to other things. 03:22: Those are the guys that, it turns out, corresponds to inertial observers in Newtonian physics.
	2015-07-15: Can You Trust Your Eyes in Spacetime? 06:57: ... relations in a tenseless mathematical space, we can discover facts about physics just by exploring geometry in that ... 07:16: ... more standard drawing of motion over time, like what you might see in a physics 101 class, tangent vectors to trajectories represent velocities, how ...
	2015-07-02: Can a Circle Be a Straight Line? 01:33: ... part one we're going to put physics aside and focus on geometry, specifically on what we really mean by ... 02:17: Today is part one, that's straight lines and curved spaces with no physics, just geometry.
	2015-06-17: How to Signal Aliens 01:18: ... Benford, and Benford-- it's three physicists all related-- analyze the physics and the economics of this ...
	2015-06-03: Is Gravity An Illusion? 00:54: OK, bear with me for a minute because we need to begin with some Physics 101 and Newton's laws of motion. 01:49: Now in Newtonian physics, inertial frames are special because Newton's second law, F equals ma, is only valid in inertial frames. 02:41: Inertial frame and non-accelerating frame are synonyms in Newtonian physics. 05:31: Now in Newtonian physics, this is just an accounting trick that has no broader significance. 00:54: OK, bear with me for a minute because we need to begin with some Physics 101 and Newton's laws of motion. 01:49: Now in Newtonian physics, inertial frames are special because Newton's second law, F equals ma, is only valid in inertial frames.
	2015-05-27: Habitable Exoplanets Debunked! 10:26: ... likely that at some time in the future, the SI unit will reflect the physics that I articulated in this episode, namely that mass and amount of stuff ...
	2015-05-20: The Real Meaning of E=mc² 00:12: And today, we're going to clarify what the most famous equation in physics really says. 00:16: ... E equals mc squared is probably the most famous equation in all of physics, but in his original 1905 paper, Einstein actually wrote it down ... 00:33: That's because at its core, this cornerstone of physics is really a lesson in how to think about what mass is. 06:57: At least in the standard model of particle physics, they're not made up of smaller parts, so where does their mass come from?
	2015-04-29: What's the Most Realistic Artificial Gravity in Sci-Fi? 00:35: ... generators or fictitious "gravity plating" seems to conflict with known physics. "Star Wars," "Battlestar Galactica," "Star Trek," "Andromeda," the ... 02:49: ... keep all this in mind as we gut check the physics of the following sci-fi examples-- "2001," "Ringworld," "Halo," and ... 06:58: ... asteroid belt. So new question, do any sci-fi franchises get all the physics right but with a structure that's compact enough that it's not entirely ... 00:35: ... generators or fictitious "gravity plating" seems to conflict with known physics. "Star Wars," "Battlestar Galactica," "Star Trek," "Andromeda," the Ridley ... 11:08: Everyone could use a good physics-related existential crisis, even six-year-olds.
	2015-04-15: Could NASA Start the Zombie Apocalypse? 04:42: I think farts are funny and that they are a good vehicle for explaining physics. 04:50: So let's look at some of the physics questions that this episode prompted.
	2015-04-01: Is the Moon in Majora’s Mask a Black Hole? 00:46: But that doesn't mean that it can't serve as a springboard to talk about some really interesting physics. 00:50: ... fact, the basic physics of "Majora's Mask" has been analyzed before, both by a thread on Reddit ...
	2015-03-18: Can A Starfox Barrel Roll Work In Space? 00:00: Few things exhibit as much as disdain for basic physics as the space levels in Nintendo's "Star Fox," except the barrel roll. 00:19: Ships that bob and weave, laser cannons galore, and giant explosions all make for good drama but bad physics. 00:38: In general, "Star Fox" flushes physics down the toilet during the space levels. 05:19: If you want to feel this physics in action, just get a bike wheel with some pegs, clamps to add mass, a spinning chair, and a couple of friends. 07:22: I wanted them to be based on understand physics that had some non-microscopic probability of occurring. 07:27: Or if I allowed in any speculative physics, like the big rip, there had to be at least some experimental observational evidence behind it.
	2015-03-11: What Will Destroy Planet Earth? 00:09: ... PLAYING] The physics of breaking something, including planets, is pretty straightforward-- ... 07:52: And to Justin Stein, thanks for generally helping people keep their physics and their facts straight.

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