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	2022-10-26: Why Did Quantum Entanglement Win the Nobel Prize in Physics? 19:52: ... scene multiplies as the hermitian conjugate breaks off from the rest of reality, slipping backwards into this infinite regress of imaginary ...
	2022-09-21: Science of the James Webb Telescope Explained! 17:35: In reality we physicists are all just playing around with the small, special-case questions about “physical” reality.
	2022-08-24: What Makes The Strong Force Strong? 03:58: ... is made of three strange quarks - in reality, 3 valence strange quarks - three quarks in the top energy level. ... 18:15: ... picture of what’s happening, and has only a loose connection to the reality. ... 03:58: ... is made of three strange quarks - in reality, 3 valence strange quarks - three quarks in the top energy level. There's ...
	2022-08-03: What Happens Inside a Proton? 00:22: ... of predicting the future  and manipulating the foundations of reality. ... 19:17: ... one question that matters,   "How can I abuse the rules of reality to  survive past the death of the stars and live   to see ...
	2022-07-20: What If We Live in a Superdeterministic Universe? 00:00: Today we’re going to try to save reality - or at least save realism. Actually just local realism. 00:47: ... physicists and philosophers have wondered if reality is fundamentally subjective, whether it exists primarily as a ... 01:12: Pilot wave theory, objective collapse models, and even the Many Worlds interpretation all seek to describe a reality that exists sans observers. 01:22: But there’s one reality life raft that we haven’t touched - and that’s superdeterminism. 02:20: ... “standard” quantum mechanics, the fundamental building block of reality is the wavefunction, which describes the evolving probability ... 05:24: The EPR paradox was meant to show that this sort of undefinedness couldn’t be the underlying reality because it violated the cosmic speed limit. 08:04: On the other hand, Many Worlds interpretation of quantum mechanics saves local realism at the cost of requiring multiple realities. 13:43: ... tell us that either locality or realism are wrong OR there are multiple realities OR the universe evolves in unalterable lock-step determinism in a way ... 00:00: Today we’re going to try to save reality - or at least save realism. Actually just local realism. 01:22: But there’s one reality life raft that we haven’t touched - and that’s superdeterminism.
	2022-06-22: Is Interstellar Travel Impossible? 15:43: In his book The Grand Design” Hawking says, and I quote, “There is no picture- or theory-independent concept of reality.
	2022-06-01: What If Physics IS NOT Describing Reality? 00:25: ... other words, the mathematical laws of   physics don’t govern reality, they’re not even  direct models of reality. Rather, the laws ... 02:44: ... feels like a very physical way  to define the building blocks of reality. ... 11:24: ... stuff that most people   believe to be the building blocks of reality. In  quantum mechanics, we tend to think of the quantum   ... 00:25: ... Rather, the laws of   physics are models of our experience of reality.  Physics models our information about the ...
	2022-04-27: How the Higgs Mechanism Give Things Mass 01:35: ... the fabric of a drum has vibrational  modes, so does the fabric of reality. ...
	2022-04-20: Does the Universe Create Itself? 00:00: ... it could be that’s what the entire universe is doing as it creates our reality. I hope it thinks of something good before we run out of ... 00:30: ... is real. We’re fond of the realist viewpoint: that there’s an objective reality out there that’s entirely independent of our subjective experience of ... 01:59: ... a simple question: in a world where observation plays a role in defining reality, how is it possible for separate observers to share a single, consistent ... 04:44: ... observer was in a sense the primary causal agent and center of its own reality. ... 05:27: ... felt that reality must have its primary existence not in the observer nor in the ... 07:08: ... can be made after the superposition is formed. That means that the reality that emerges depends in a profound way on the choice of ... 08:05: ... convinced that that process of interrogation in some way creates reality. ... 09:26: ... question influence the past. But it doesn’t, his questions are helping reality define itself on the ... 09:48: ... the universe was one giant game of negative 20 questions, in which the reality we observe is the only reality that is consistent with the questions ... 11:11: ... clear: Wheeler wasn’t saying that conscious minds have direct power over reality, as claimed by some of the worst practitioners of quantum woo. But the ... 12:27: ... observed, while still allowing that there’s some kind of substrate to reality. We’ll talk about these ideas soon, in our long quest to find that ... 09:26: ... question influence the past. But it doesn’t, his questions are helping reality define itself on the ... 09:48: ... can exist is one that can have observers whose questions can make that reality real. ... 01:59: ... how is it possible for separate observers to share a single, consistent reality? Solutions to this seeming paradox spanned the spectrum. For example, the Hungarian ...
	2022-03-16: What If Charge is NOT Fundamental? 08:03: Starting with experiments at the Stanford Linear Accelerator Center in 1968, the reality of quarks quickly became conclusive.
	2022-03-08: Is the Proxima System Our Best Hope For Another Earth? 18:58: In reality, the defects are probably more complicated.
	2022-02-23: Are Cosmic Strings Cracks in the Universe? 00:58: ... Reality has cracks in it. Universe-spanning  filaments of ancient Big Bang ...
	2022-02-16: Is The Wave Function The Building Block of Reality? 00:03: ... influence of the conscious mind to the grandiose proposition of multiple realities. But there’s one explanation that feels as down to earth as the classical ... 03:24: ... function never collapses, rather lasts forever, splitting into parallel realities. And we have the idea of quantum decoherence, where different parts of ... 03:59: ... that accepts the wave function as the fundamental building block of reality, unlike pilot wave theory. And one which avoids multiple universes by ... 12:55: ... the quantum wave function? And how does this abstract system of shifting realities give rise to our solid, familiar, and singular space ...
	2022-02-10: The Nature of Space and Time AMA 00:03: ... the sizes the dimensions of space and time okay so in the metrics of reality for example in the friedman robertson walker lemartrometric um the ...
	2022-01-27: How Does Gravity Escape A Black Hole? 13:42: ... at least the part of it that could be considered to correspond with our reality, is an indicator that there's a much simpler underlying theory on the ...
	2022-01-12: How To Simulate The Universe With DFT 13:35: ... to the narrow sliver of that wavefunction that represents our observed reality. ... 13:51: Our computationally tractable reality, due to its very few dimensions of spacetime.
	2021-11-10: What If Our Understanding of Gravity Is Wrong? 14:01: ... way or another we opened paths to continue  our exploration of reality, whether we’re led beyond the standard model by dark matter  ...
	2021-10-20: Will Constructor Theory REWRITE Physics? 00:00: ... underlying facts about the world, and from simple statements about reality they built up their incredible ... 01:11: We consider those laws to be “true” when these predictions match reality. 03:38: ... could be used as a way to describe how nature works - we can break up reality in terms of constructors that can cause changes in the world via “tasks” ... 10:15: ... said that constructor theory may be the most fundamental way to describe reality - in which case the rest of physics can be derived from Constructor ... 14:48: ... starting to get a sense   of how far our perception of  reality is from baseline ... 10:15: ... said that constructor theory may be the most fundamental way to describe reality - in which case the rest of physics can be derived from Constructor Theory ...
	2021-10-05: Why Magnetic Monopoles SHOULD Exist 08:08: Reality should only be assigned to the monopoles themselves. 11:54: This conflict with reality might have ruled out both monopoles and the grand unified theories that predict them.
	2021-08-10: How to Communicate Across the Quantum Multiverse 01:46: ... interpretation of quantum mechanics, the universal wavefunction is the reality, encompassing all possible histories and futures and all exist. But we ... 02:29: ... the wavefunction collapses at the point of measurement, leaving only one reality; or de Broglie-Bohm pilot wave theory, which says that particles are ... 01:46: ... interpretation of quantum mechanics, the universal wavefunction is the reality, encompassing all possible histories and futures and all exist. But we are only ...
	2021-07-21: How Magnetism Shapes The Universe 16:13: But worlds in that sense aren’t separate, distinguishable realities. 18:20: ... in making us less freaked out by the idea of a stupid number of parallel realities. ...
	2021-07-13: Where Are The Worlds In Many Worlds? 00:35: ... tree, a universe that divides into unthinkably many alternate realities. ... 04:12: The wavefunction is what underlies our perceived reality. 04:16: We never see the wavefunction - we only see measurements - we pluck our reality from this fantastically complex structure.
	2021-07-07: Electrons DO NOT Spin 13:30: ... is a clue to the structure of matter - and maybe to the structure of reality itself through these things we call spinors - strange little knots in ...
	2021-06-23: How Quantum Entanglement Creates Entropy 07:14: ... before about how these experiments verify these overlapping split realities. ... 07:44: ... look at it. That superposition really represents the coin’s current reality   from your perspective. But if you have full  knowledge of the ... 13:09: ... talk about - because von Neumann’s insights lead us to a picture of reality   that is more informational than physical.  But that information ...
	2021-05-19: Breaking The Heisenberg Uncertainty Principle 03:18: ... viewed it as an example of a principle of reality that he called “complementarity.” Bohr developed this principle when ...
	2021-04-13: What If Dark Matter Is Just Black Holes? 01:21: Evidence for the reality of black holes is now pretty convincing - and we’ve talked about this evidence before.
	2021-04-07: Why the Muon g-2 Results Are So Exciting! 11:46: That's how we peer beneath the hood of reality.
	2021-03-23: Zeno's Paradox & The Quantum Zeno Effect 10:25: Decoherence occurs, and the different parts of the wavefunction, representing possible realities, can no longer interact. 11:37: In Many Worlds, that means generating separate realities corresponding to the possible outcomes.
	2021-03-16: The NEW Crisis in Cosmology 03:55: ... very likely holds deep, deep  clues about the fundamentals of reality.   With its discovery it suddenly became VERY important to perfect our ...
	2021-03-09: How Does Gravity Affect Light? 12:04: The fact is, none of these pictures really represent the “ultimate” reality. 12:38: ... own regard, but are really just narrow slices of some more fundamental reality underlying this generally relative ...
	2021-02-17: Gravitational Wave Background Discovered? 00:00: ... waves that we can detect produced by only relatively nearby mergers the reality of these strong space-time ripples reveals an awesome truth we know that ...
	2021-02-10: How Does Gravity Warp the Flow of Time? 11:29: ... are even more ways to think about this - and no one of them is closer to reality - they are, in a sense, just our way to map the math to our ...
	2021-01-26: Is Dark Matter Made of Particles? 00:45: ... faced with the eerie reality of the dark sector - perhaps there’s an entire family of particles that ...
	2021-01-19: Can We Break the Universe? 14:28: ... more we probe the fundamentals of reality the more we realize that the stories we tell to make sense of the math ...
	2021-01-12: What Happens During a Quantum Jump? 01:07: However they exist now - and the reality of the quantum jump has finally been tested. 04:16: The debate over quantum jumps was just one part of the larger discussion about the quantum nature of reality.
	2020-12-22: Navigating with Quantum Entanglement 00:00: ... think of quantum mechanics as only affecting only the smallest scales of reality, with classical reality taking over at some intermediate ...
	2020-11-11: Can Free Will be Saved in a Deterministic Universe? 01:47: ... are not gonna pretend to give any definitive answers regarding its reality, but we do wanna look at the most popular way this question is positioned ...
	2020-10-27: How The Penrose Singularity Theorem Predicts The End of Space Time 03:18: ... so the same old arguments held against  these things forming in reality. ... 08:11: ... of north, you reach the end of time or space. They are dead-ends to reality. ... 13:38: ... experiment is seeing - multiple   possible “realities” overlapping and either  stacking or canceling out to either ...
	2020-10-20: Is The Future Predetermined By Quantum Mechanics? 01:10: ... if we accept a unique reality for those other observers in our present and we accept that their ... 02:53: ... as well defined reality but rather as distributions of probability that describe all possible ... 03:04: The wave function can be thought of as a state in which all physically possible realities intermingle. 03:24: The big question is what causes the transition from this world of quantum indeterminacy to the solid singular reality of the macroscopic world. 04:08: All particles take on defined properties, and one actual reality is chosen from the many possible ones. 04:23: ... of quantum mechanics but at the moment of measurement, a single reality is randomly selected from the distribution of possible ... 04:57: ... than choosing one reality out of many, when we observe a quantum system, we sort of just become ... 05:17: The illusion of randomness is that we find ourselves in the one branch of the wave function, corresponding to the reality we perceive. 08:15: Sometimes the quantum multiverse of Many-Worlds is depicted as this branching tree, in which the realities multiply as time progresses. 09:23: According to the decoherence explanation, the quantum multiverse isn't a cleanly divided set of alternate realities. 09:43: Your reality is the particular set of entanglement networks that you interact with. 09:47: And there are other realities with different networks that contain different versions of you. 10:07: So what does all of this say about determinism and the reality of your past and future? 10:59: There are still other observers in your slice of reality for whom you are now is their past or future. 11:10: ... is an entirely deterministic interpretation that doesn't have multiple realities, just a wave function that guides particles in a perfectly determined way ... 12:23: ... and the block universe and what this might tell us about the reality of the past and ... 13:44: The alternative seems to be to not ascribe reality to any observer's present but then what exists?
	2020-10-13: Do the Past and Future Exist? 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. 09:16: Let’s get back to the question: what does all this say about the reality of the past and the future. 10:40: ... that only the current “slice” of the block universe has a meaningful reality - because it’s impossible to define what that slice actually ... 11:28: Nothing outside that section of the block universe can be ascribed a definite reality until you interact with it. 12:17: Depending on how you interpret quantum mechanics, that could be evidence in favor of this solipsistic denial of external reality. 12:24: ... and determinism if you like- but to do so you need all possible realities to exist simultaneously and persist into the ... 10:40: ... that only the current “slice” of the block universe has a meaningful reality - because it’s impossible to define what that slice actually ...
	2020-09-28: Solving Quantum Cryptography 06:59: ... different parts of the quantum wavefunction - or in different parallel realities if you’re into the Many Worlds interpretation of quantum ...
	2020-09-21: Could Life Evolve Inside Stars? 11:06: ... where space and physics geeks from around the world ponder the nature of reality. ...
	2020-09-08: The Truth About Beauty in Physics 00:20: ... of a proposed law of physics, the more likely it is to truly represent reality. ... 06:15: So is base reality represented by the simplest possible interaction or relationship, expressible with the simplest conceivable mathematical statement? 06:45: ... no matter how pretty and parsimonious our theory, if it doesn’t match reality as measured by experimental data, then we’ve gone too ... 12:11: And so perhaps the mathematical wonders of string theory DO reflect something true about reality, but we’re struggling with how to interpret it all. 06:15: So is base reality represented by the simplest possible interaction or relationship, expressible with the simplest conceivable mathematical statement?
	2020-08-10: Theory of Everything Controversies: Livestream 00:00: ... great quest to understand the universe to find the mechanics of base reality and to understand why our universe exists at all seem to be at an ...
	2020-07-28: What is a Theory of Everything: Livestream 00:00: ... space time has always been about digging towards the deepest layers of reality for nearly 100 years it's felt like we've been hovering just above ...
	2020-06-22: Building Black Holes in a Lab 00:16: ... image of the nearest gigantic one. Nonetheless, the evidence for their reality is overwhelming. Stars orbiting in crazy slingshot orbits around a patch ...
	2020-05-27: Does Gravity Require Extra Dimensions? 14:56: But really, the math is just fine - the problem is assigning physical reality after pushing the math too far. 15:44: ... you're totally right, Polygondwanaland: in reality, impossible-seeming things like an infinite string of universes or a time ...
	2020-05-11: How Luminiferous Aether Led to Relativity 02:33: ... as empty space, and Aristotle’s aether therefore both filled and gave reality to the space between the celestial bodies. He imagined the aether as ... 05:53: ... that light was indeed some type of wave. And waves need a medium, so the reality of the luminiferous aether seemed a done ...
	2020-05-04: How We Know The Universe is Ancient 14:36: ... negative energy to do so and keep it open long enough to traverse. The reality is that, in general, traversible wormholes probably can't exist - and ... 16:59: ... become a pretty hardcore Everetian always trying to convince me of the reality of the quantum multiverse and how there are way more treats in other ...
	2020-04-28: Space Time Livestream: Ask Matt Anything 00:00: ... frozen imprint on the event horizon where things fell through and in reality they don't see things fall through they just see objects falling and ...
	2020-04-22: Will Wormholes Allow Fast Interstellar Travel? 02:08: ... Rosen’s bridge did not necessarily have to connect parallel layers of reality - it could instead connect distant regions of our ... 13:26: ... as intergalactic shortcuts, wormholes are granting new insights into reality. For example, Leonard Susskind and Juan Maldecina have speculated that ... 02:08: ... Rosen’s bridge did not necessarily have to connect parallel layers of reality - it could instead connect distant regions of our ...
	2020-03-24: How Black Holes Spin Space Time 12:36: ... and understanding the physics of how a ship can move. Because in reality, the maneuverability of a ship is influenced by hull shape, ship mass, ...
	2020-03-16: How Do Quantum States Manifest In The Classical World? 13:47: ... the way - in case you missed it, I just told you how reality works. At least according to the framework of decoherence and these ...
	2020-03-03: Does Quantum Immortality Save Schrödinger's Cat? 01:38: ... that those other branches are just as valid as ours - implying that reality may split and multiply in all possible ... 02:02: We can’t ever peer into these other realities, so how do we know they exist? 11:06: So let’s stick it to all those alternate realities, and make this the best of infinitely many diverging histories of space time. 13:07: It ensures that sensible and consistent macroscopic realities are observed across each branch. 16:35: Hm... fundamental insights into reality ... bit of cash ... tough choice.
	2020-02-18: Does Consciousness Influence Quantum Mechanics? 00:00: If I focus really hard do my power of quantum mechanics allow me to manifest reality? 01:18: One particularly pervasive notion is the idea that consciousness can directly influence quantum systems - and so influence reality. 01:42: ... result, and that it’s meaningless to talk about a well-defined objective reality before that measurement is ... 08:40: Even Erwin Schrodinger, in his 1958 lectures Mind and Matter states that consciousness is needed to make physical reality meaningful. 09:16: ... proliferated making all sorts of claims - like that you can influence reality by acts of will - collapse the wavefunction in your favour to force the ... 09:33: Then there’s the idea that external reality doesn’t have an objective existence - our minds invent the universe. 10:13: Those founders did question the role of consciousness and the connection between subjective and objective reality - and they were right to do so. 11:37: ... only observer and you’re inventing your friend and, well, the rest of reality and there are no other observers in the universe to give conflicting ... 11:46: ... different observers seems to be that the result of the experiment - and reality - exists independently of individual ... 10:13: Those founders did question the role of consciousness and the connection between subjective and objective reality - and they were right to do so. 11:46: ... different observers seems to be that the result of the experiment - and reality - exists independently of individual ... 09:33: Then there’s the idea that external reality doesn’t have an objective existence - our minds invent the universe. 08:40: Even Erwin Schrodinger, in his 1958 lectures Mind and Matter states that consciousness is needed to make physical reality meaningful.
	2020-02-03: Are there Infinite Versions of You? 06:08: It means that every particle, or chunk of quantum field, or whatever elementary pixel of reality - has matching properties between the two regions.
	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. 02:16: ... search for the underlying clockwork of reality led to quantum field theory, in which all particles are described by ... 10:20: So do we really now have a perfect mechanical description of the smallest scales of reality? 02:16: ... search for the underlying clockwork of reality led to quantum field theory, in which all particles are described by ...
	2020-01-20: Solving the Three Body Problem 00:20: ... at any distant time, future or past. I say “in principle” because the reality is not so simple. Despite the beauty of Newton’s equations, they lead to ... 03:18: ... reality of the three-body problem is that the evolution of almost all starting ...
	2020-01-13: How To Capture Black Holes 00:00: ... version of a solar system. This insane hypothesis is getting closer to reality, at least according to the papers in today’s Space Time Journal ...
	2019-12-17: Do Black Holes Create New Universes? 12:08: ... to be true, but they help us explore the vast space of all possible realities - where somewhere is hidden the true nature of our ...
	2019-12-09: The Doomsday Argument 09:51: ... issue is that the doomsday argument is assigning some sort of reality to the two scenarios - doom-early and doom-late are both thought of as ...
	2019-12-02: Is The Universe Finite? 15:25: It encourages us to sit inside and think about the nature of the reality.
	2019-11-18: Can You Observe a Typical Universe? 00:00: The moment you started observing reality, you hopelessly polluted any conclusions you might make about it. 07:54: And by cosmos I mean the sum total of reality, be it universe or multiverse.
	2019-11-04: Why We Might Be Alone in the Universe 00:12: Actually, it turns out that our very privileged perspective on the universe from Earth’s comfortable biosphere may tell us a lot about our reality.
	2019-09-30: How Many Universes Are There? 14:09: Got burning question about the nature of reality?
	2019-09-23: Is Pluto a Planet? 15:15: So, last time we looked at the harsh realities of what it would take to terraform Mars.
	2019-09-16: Could We Terraform Mars? 07:51: In reality of course we’d need to first locate and then dig down some kilometers before we could access most of the carbonates.
	2019-07-01: Thorium and the Future of Nuclear Energy 00:33: ... reactors sounds scary because the disasters are pretty epic However, the reality is that far far more people die from straight up air pollution due to ...
	2019-05-09: Why Quantum Computing Requires Quantum Cryptography 06:37: You just switched between different quantum representations of reality and then back again, and so invoked the uncertainty principle.
	2019-05-01: The Real Science of the EHT Black Hole 10:54: ... Horizon Telescope and its brilliant team – finally hits us with visceral reality of the black hole, Einstein’s wildest prediction and the strangest ...
	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. 09:19: A duality is when two seemingly different theories prove to represent the same underlying physical reality.
	2019-02-20: Secrets of the Cosmic Microwave Background 02:05: ... said this picture of a single expanding shell of plasma is simplistic In reality these acoustic waves pulse in and out of their over-dense regions They ... 16:39: ... to become a physicist It seemed like that I'd glimpsed a secret layer of reality that I just had to figure out It was kind of like getting my letter from ...
	2019-02-07: Sound Waves from the Beginning of Time 07:40: In reality, the density waves sloshed inwards and outwards.
	2019-01-16: Our Antimatter, Mirrored, Time-Reversed Universe 00:42: ... and then he asks us to imagine building that same mirror clock in reality everything is constructed as though reflected - numbers get painted ... 17:15: ... technology level. It's under no obligation to make every next layer of reality accessible to the next generation of physicists. We blasted through ... 18:01: ... find a diagnosis that fits the symptoms with the symptoms being all of reality itself. Nice observation also makes me feel better when I put my title ... 17:15: ... technology level. It's under no obligation to make every next layer of reality accessible to the next generation of physicists. We blasted through several reality ...
	2018-12-06: Did Life on Earth Come from Space? 00:37: ... gives to these sorts of Fringe ideas regardless of their connection to reality is it harmful or is any public exposure to science good it seems that ...
	2018-11-07: Why String Theory is Right 13:10: But can such an elegant and rich mathematical structure really have nothing to do with reality? 14:14: ... mechanics, the idea of virtual particles and their tenuous connection to reality. ...
	2018-10-31: Are Virtual Particles A New Layer of Reality? 00:53: Sometimes our mathematical hacks point to strange new aspects of reality. 01:41: So will virtual particles also prove to represent a new underlying aspect of reality? 01:47: Now, we're going to go pretty deep in this one, but it will bring us closer to a better understanding of the quantum nature of reality. 04:18: But in reality, the field never exists in these states. 11:11: ... horizon, allowing one of the pair to escape to beautiful freedom and reality. ... 12:45: If they represent a physical reality, then there should be no way to do quantum field theory calculations without them.
	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. 04:48: ... mechanism to explain the underlying workings of our entire reality, a theory of ... 08:13: ... irreducible existence, topological irregularities in the fabric of reality, or the most common answer, it's a meaningless ...
	2018-10-10: Computing a Universe Simulation 01:42: This may not be how our reality works, but it's an idea that many physicists take seriously. 01:48: ... emergent patterns of a cellular automaton, we can think of any physical reality as a computation, so long as it's underlying mechanics are rules-based ... 01:42: This may not be how our reality works, but it's an idea that many physicists take seriously.
	2018-09-20: Quantum Gravity and the Hardest Problem in Physics 00:00: [MUSIC PLAYING] MATT O'DOWD: Between them, general relativity and quantum mechanics seem to describe all of observable reality. 10:23: They can be brought back to reality by actual physical measurements of a few simple numbers in a process called renormalization.
	2018-09-12: How Much Information is in the Universe? 00:41: ... increasing number of physicists view the universe, view reality, as informational at its most fundamental level, and its evolution ...
	2018-08-23: How Will the Universe End? 17:01: The key is that our accepted models of reality are consistent in ways that random chance couldn't possibly allow.
	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. 00:28: But could it be that the underlying rules that govern reality are really so far from human intuition, or a physicist just showing off? 03:32: As we'll see, their nature is predicted by quantum theory, measure electromagnetic moments, and you verify your quantum picture of reality. 11:57: We make observations of reality and then try to find theoretical frameworks that explain those observations. 12:23: That means that it and the quantum mechanical principles on which it is founded are good representations of reality.
	2018-07-18: The Misunderstood Nature of Entropy 03:27: In reality, it will almost always increase unless energy comes in from the outside to reestablish the temperature differential. 03:46: ... took a revolution to understand the reality of entropy, that revolution was statistical mechanics, founded by the ...
	2018-07-11: Quantum Invariance & The Origin of The Standard Model 00:15: But even more stunning is how it was discovered, by peering deep into the symmetries of reality. 00:49: These symmetries can be portals into entirely new aspects of reality. 10:29: ... capacity for intuition, we are led to true discoveries about physical reality. ...
	2018-06-27: How Asteroid Mining Will Save Earth 11:05: In it, Professor Tegmark explores an incredible idea that perhaps our reality is mathematical at its most fundamental level.
	2018-05-16: Noether's Theorem and The Symmetries of Reality 00:42: They emerge from profound and simple truths about the basis of reality.
	2018-04-04: The Unruh Effect 04:28: In reality, eternal constant acceleration would take infinite energy.
	2018-03-15: Hawking Radiation 00:06: Stephen Hawking peered behind the curtain of reality and glimpsed the true workings of the universe. 08:19: It's fair to interpret this mixing as the promotion of what were once virtual particles into reality.
	2017-12-06: Understanding the Uncertainty Principle with Quantum Fourier Series 00:49: See, the apparent weirdness of the uncertainty principle hints at an even weirder underlying reality that gives rise to it. 00:58: ... particles with well-defined properties, but this intuitive, mechanical reality is emergent from an underlying reality in which the particles that form ...
	2017-11-22: Suicide Space Robots 14:35: There's a certain way that the universe is-- an actual objective reality that is a true nature that science is trying to find out. 14:50: In our quest to find the true nature of reality, we must explore a lot of the ways that the universe isn't in order to rule them out.
	2017-10-19: The Nature of Nothing 06:23: ... interactions of real particles without themselves being burdened with reality. ...
	2017-08-30: White Holes 00:50: ... describes entities that are even stranger, but whose relationship with reality is still ... 12:19: In the not too distant future, we'll investigate the reality of this mysterious parallel patch of space time.
	2017-07-26: The Secrets of Feynman Diagrams 00:13: This incredible simplicity provides some stunning insights into the nature of reality. 05:58: On the other hand, everything that happens between the in going and outgoing tracks has questionable reality.
	2017-07-12: Solving the Impossible in Quantum Field Theory 00:06: Quantum field theory is stunningly successful at describing the smallest scales of reality, but its equations are also stunningly complex. 09:21: In reality, something must limit the maximum energy of these photons.
	2017-07-07: Feynman's Infinite Quantum Paths 15:30: ... model, string theory is untested and may have nothing to do with reality. ...
	2017-06-28: The First Quantum Field Theory 00:46: Its wild success tells us that the mathematical description provided by quantum mechanics reflects deep truths about reality. 01:02: It's the best description we have of the fundamental workings of reality.
	2017-06-21: Anti-Matter and Quantum Relativity 00:08: Over the past quarter century, the greatest geniuses of the modern era discovered the two keys to the fundamental nature of reality. 00:31: Yet, this year, 1928, one brilliant insight would bring these theories together and unveil the quantum fabric of reality. 11:03: ... which have become our best description of the underlying workings of reality. ...
	2017-05-03: Are We Living in an Ancestor Simulation? ft. Neil deGrasse Tyson 00:06: ... some point, perhaps soon, our simulations will be indistinguishable from reality. ... 02:18: ... way that virtual reality now exists, and you know, video games have advanced, it is likely that, ... 04:05: That we are simulated minds in a virtual universe that has just enough detail to convince us of its reality.
	2017-03-22: Superluminal Time Travel + Time Warp Challenge Answer 00:20: The reality of the vast scale of our universe, even with our galaxy, is inconvenient for tales of star-hopping adventure or warring galactic empires.
	2017-01-19: The Phantom Singularity 03:20: But the reality of the black hole singularity may give reason to doubt the theory that predicts such a thing. 04:00: Being limited by reality is so boring.
	2017-01-04: How to See Black Holes + Kugelblitz Challenge Answer 00:35: There's been no reasonable doubt about the reality of black holes for some time.
	2016-12-21: Have They Seen Us? 00:00: ... it some of our greatest broadcast masterpieces, as well as our worst reality ...
	2016-12-08: What Happens at the Event Horizon? 00:59: It's not entirely inaccurate, but the reality is, of course, a good deal more complex and interesting. 17:42: ... his 1956 book, he, Bohm, assumes that the [INAUDIBLE] wave is a physical reality, even the [INAUDIBLE] wave in configuration ... 18:47: ... fact is we just don't know whether the reality that drives the strange results of quantum experiments is actually ...
	2016-11-30: Pilot Wave Theory and Quantum Realism 00:55: ... waves and particles at the same time, the act of observation defines reality, cats are both alive and dead, or even that the universe is constantly ... 01:13: The weird results of quantum experiments seem to demand weird explanations of the nature of reality. 10:27: ... we shouldn't take a macroscopic analogy as proof of microscopic reality, but it certainly demonstrates that this sort of thing does happen in ... 00:55: ... waves and particles at the same time, the act of observation defines reality, cats are both alive and dead, or even that the universe is constantly ...
	2016-11-16: Strange Stars 00:32: ... as with any monster, it was hard to know whether to credit them with reality. ...
	2016-10-26: The Many Worlds of the Quantum Multiverse 00:27: [MUSIC PLAYING] One of the strangest features of the quantum description of reality is the idea of superposition. 02:04: ... of measurement was thought to collapse possibility space into a single reality, at least with respect to the measured ... 06:20: ... of histories, merges into the single timeline of the observer's reality. ... 07:07: ... many worlds interpretation invites the idea that reality splits into different branches every time quantum states diverge into ... 07:53: Both many worlds and Copenhagen create alternate realities. 09:11: You're just the one who happens to be experiencing this branch of reality. 10:54: But of all those countless future branches of reality, some are going to be pretty amazing. 07:07: ... many worlds interpretation invites the idea that reality splits into different branches every time quantum states diverge into different ...
	2016-09-29: Life on Europa? 09:31: ... entanglement and the implications its results have for the nature of reality. ...
	2016-09-21: Quantum Entanglement and the Great Bohr-Einstein Debate 00:00: [MUSIC PLAYING] Is there a hidden physical reality that underlies the strange behavior of the quantum world? 00:08: Or is that reality an illusion in the eye of the observer? 01:39: On the one hand, Niels Bohr insisted that it was meaningless to assign reality to the universe in the absence of observation. 02:00: In between observations, the wave function describing this superposition is a complete description of reality. 02:22: On the other hand, Albert Einstein insisted on an objective reality, a reality independent of our observation of it. 02:35: There must exist what we call hidden variables that reflect a more physical underlying reality. 02:22: On the other hand, Albert Einstein insisted on an objective reality, a reality independent of our observation of it.
	2016-08-10: How the Quantum Eraser Rewrites the Past 00:05: Can reality be adjusted after events have occurred? 00:25: They imply some startling things about the nature of reality. 01:42: Does observation of the particle's location force the universe into settling down and deciding which particular reality we happen to be in? 07:44: Some sort of retroactive reality cascade? 09:50: Perhaps the evolving tapestry of entanglement in all its impossible complexity is what really defines reality in this space time. 07:44: Some sort of retroactive reality cascade?
	2016-08-03: Can We Survive the Destruction of the Earth? ft. Neal Stephenson 00:00: [MUSIC PLAYING] Doomsday scenarios are a lot of fun in science fiction, not so much in reality, which is tough because global catastrophes happen.
	2016-07-27: The Quantum Experiment that Broke Reality 00:22: In fact, it hints that the fundamental nature of reality may not be physical at all, at least in any sense that we're familiar with. 08:55: Weirder, those different possible paths, those different possible realities, interact with each other. 09:08: There's an interaction between possible realities that is seen in the distribution of final positions in the interference pattern. 09:17: That pattern is real, even though the vast majority of paths involved in producing the interference never attain reality. 09:36: ... theory of quantum mechanics produces stunningly accurate predictions of reality and it's completely consistent with the Copenhagen interpretation but ... 09:49: There are interpretations that give the wave function a physical reality.
	2016-06-22: Planck's Constant and The Origin of Quantum Mechanics 00:03: ... defines the size scale at which the familiar physics of our macroscopic reality gives way to the weirdness of the quantum ... 01:54: So it also sort of defines a pixel scale to reality. 02:36: It may define the scale of quantum reality, but the influence of the Planck constant can be seen even on our scale.
	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.
	2016-03-16: Why is the Earth Round and the Milky Way Flat? 00:10: The reason will get into some of the fundamental realities of our universe.
	2016-02-24: Why the Big Bang Definitely Happened 00:11: ... was pretty contentious when it was first proposed, as is any picture of reality that conflicts with the current ... 09:06: In science, when we say theory, we mean a description of reality that has stood up to many, many experiments.
	2016-01-27: The Origin of Matter and Time 07:37: But this picture is still a meaningful perspective on reality. 08:09: Now here's something that seems to be a more concrete reality than the flow of time.
	2015-12-09: How to Build a Black Hole 00:42: And just because something exists in the mathematics does not mean it has to exist in reality. 00:51: Black holes are astrophysical realities that we have ample evidence for.
	2015-11-25: 100 Years of Relativity + Challenge Winners! 00:36: ... from the simplest of thought experiments, simple statements about reality and yet the mathematical description that flowers from those statements ...
	2015-10-28: Is The Alcubierre Warp Drive Possible? 00:33: ... the idea that he decided that the Star Trek warp drive should become a reality. ... 08:32: Quantum mechanics began as an abstract musing on the nature of reality.
	2015-10-15: 5 REAL Possibilities for Interstellar Travel 10:05: Let's talk near-term reality.
	2015-10-07: The Speed of Light is NOT About Light 02:26: The first clues to the bizarre quantum nature of reality had emerged. 04:06: ... frames-- the transformation that represents space and time in our reality. ... 07:15: It must describe our reality. 08:04: This is further evidence that our new transformation accurately describes our reality.
	2015-08-05: What Physics Teachers Get Wrong About Tides! 05:25: But in reality, they're microscopic.
	2015-07-29: General Relativity & Curved Spacetime Explained! 04:01: On the contrary, they're designed to break your excessive reliance on your eyes so that your brain becomes more free to accept what reality isn't.
	2015-07-22: SPECIAL ANNOUNCEMENT + Flat Spacetime Geometry Comments 00:38: It's the basis of all reality.
	2015-04-22: Are Space and Time An Illusion? 00:00: [INTRO MUSIC] Today's episode is about space, time, and the nature of reality. 00:46: Spacetime refers to whichever external reality underlies our collective experiences of the space between things and the time between events. 00:55: Why can't space and time just be a reality? 01:43: For today, we'll just take them at face value and focus on what they imply about the nature of reality. 02:25: Or phrased another way, if time and space as we usually conceive of them aren't part of objective reality, then what is? 02:35: A good starting point for objective reality is universal agreement. 04:25: So he proposed the following radical idea-- maybe reality is not a three dimensional space that evolves in time. 06:32: So why do we perceive reality in such a vividly spatial and temporal way? 00:46: Spacetime refers to whichever external reality underlies our collective experiences of the space between things and the time between events.

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