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2022-12-08: How Are Quasiparticles Different From Particles?

  • 04:44: In a sense that’s right - quasiparticles are emergent from the behavior of a particular configuration of matter.

2022-11-23: How To See Black Holes By Catching Neutrinos

  • 00:12: So it makes sense we should use one to study the other, rig?

2022-11-16: Are there Undiscovered Elements Beyond The Periodic Table?

  • 03:02: They named the new element Technetium after the Greek word for "art" or "craft", so in a sense its name means "Crafted element".
  • 04:04: For those, the instability sort of makes sense - their nuclei are enormous, so you might expect they’d have trouble holding themselves together.
  • 19:26: So if this dynamic happened on earth it makes sense it could happen across the universe.

2022-11-09: What If Humanity Is Among The First Spacefaring Civilizations?

  • 06:00: ... we assume that humanity was not particularly lucky, in the sense that we didn’t blast through many more hard steps than chance would ...

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 whose discoveries render the  universe more ...

2022-10-19: The Equation That Explains (Nearly) Everything!

  • 10:57: ... of particles that cannot be measured, and of infinities that make no sense. But it turns out that if you add a copy of the matter term but switch ...

2022-09-28: Why Is 1/137 One of the Greatest Unsolved Problems In Physics?

  • 06:37: So it’s starting to make sense why the fine structure constant appears in all of these formulas that depend on the electromagnetic force.

2022-08-24: What Makes The Strong Force Strong?

  • 09:20: This makes sense when we have two quarks, they have opposite color charges so they cancel out.
  • 14:27: We have 3 colour receptors, and our brains use the SU(3) symmetry group to combine the input from those receptors into our subjective sense of colour.

2022-08-17: What If Dark Energy is a New Quantum Field?

  • 03:33: ... we observe. That number is around 5x10^-10 Joules/m^3. To give you a sense of the smallness of this, if you could take all the dark energy in a ...

2022-08-03: What Happens Inside a Proton?

  • 15:29: ... liquid and move around entire tectonic plates.   So in a sense it’s both a solid and a liquid - a state called plastic in the ...

2022-06-15: Can Wormholes Solve The Black Hole Information Paradox?

  • 00:00: ... nightmare.   It turns out that in order to make  sense of their paradoxical nature,   we need to consider that each ...
  • 09:17: ... Even though these wormholes don’t really exist in a classical sense,   the fact that they can possibly exist in between measurements is ...

2022-06-01: What If Physics IS NOT Describing Reality?

  • 00:00: ... some of the most mysterious  aspects of nature make a lot more sense. ...
  • 02:20: ... a lot  of the weirdness of quantum mechanics   can make sense if we think about it as a  model of our information about the ...
  • 04:05: ... of the weird results of   quantum mechanics suddenly make sense. Things  like quantum indeterminacy, entanglement, and ...
  • 12:09: ... a lot of the weirdness we see in the quantum world  make more sense if we pay attention to the fact   that our only direct ...

2022-05-25: The Evolution of the Modern Milky Way Galaxy

  • 01:41: ... Way of the present,   and of galaxy evolution in the general sense. ...

2022-05-04: Space DOES NOT Expand Everywhere

  • 00:19: ... the lens of Einstein’s general theory of relativity, this only makes sense if all distances everywhere are increasing evenly. This revelation led ...
  • 08:51: ... told you that space doesn’t get stretched out like rubber. In a sense new space gets created as it expands. But what does that actually mean? ...
  • 13:50: ... Schroeder quips “carefully and hypothetically” - which is correct in the sense that you don’t measure it not directly, like, not with a subatomic set ...
  • 16:38: ... way the electron in the admittedly outdated Bohr model of the atom in a sense “creates itself” by constructive interference - only electrons whose ...

2022-04-27: How the Higgs Mechanism Give Things Mass

  • 09:34: ... U(1) invariance. We need the laws of physics  to still make sense if there are rotations from   one point in space to the next. ...

2022-04-20: Does the Universe Create Itself?

  • 01:59: ... give a better sense of why we need to go to these crazy lengths to explain the universe, ...
  • 04:44: ... view of von Neumann and Wigner, in which the observer was in a sense the primary causal agent and center of its own ...
  • 11:29: ... a thing to KNOW that information. But non-conscious entities can, in a sense, know something if information of that something is recorded inside ...

2022-03-30: Could The Universe Be Inside A Black Hole?

  • 03:48: In a sense geodesics form the grid that defines the fabric of spacetime.

2022-03-23: Where Is The Center of The Universe?

  • 11:35: ... turns out there are ways to make sense of Hubble’s observation of the receding galaxies that doesn’t require an ...
  • 16:55: Just like it makes no sense to distinguish electrons with up or down spin as different particles.

2022-03-16: What If Charge is NOT Fundamental?

  • 03:23: By introducing this new conserved quantity,  Heisenberg started to make  sense of the relationship between protons and neutrons.
  • 03:29: ... example, with this choice of their relative isospins, it made sense why nuclei prefered to have roughly equal numbers of protons and ...
  • 04:07: So many of them, in fact, that physicists struggled to make sense of this so-called particle zoo.
  • 07:34: ... this episode, but in short, Gell-Mann realized that he could  make sense of the geometric symmetry if nucleons themselves were not elementary ...

2022-03-08: Is the Proxima System Our Best Hope For Another Earth?

  • 05:56: ... exoplanet hunters realized that Proxima’s shifting emission lines made sense if the star was wobbling in a tight circle, moving at about a mile per ...
  • 20:24: ... scale structure is defined by those density fluctuations, so in that sense cosmic strings could have influenced it - but not directly in the sense ...

2022-02-23: Are Cosmic Strings Cracks in the Universe?

  • 12:19: ... to form a third, connected string which is,   in a sense, a combination of the two. This gives us a potential way to distinguish ...

2022-02-16: Is The Wave Function The Building Block of Reality?

  • 00:03: ... world that we’re trying to explain. Let’s see if it actually makes sense. ...

2022-02-10: The Nature of Space and Time AMA

  • 00:03: ... grid that defines what point in space is expands over time so that sense the the points of that grid getting further apart um and since we ...

2022-01-12: How To Simulate The Universe With DFT

  • 09:48: Let me try to give you a sense of how this is done.

2021-12-10: 2021 End of Year AMA!

  • 00:02: ... surrounding galaxy and so this gravitational lensing allows us to in a sense tack an additional galaxy sized lens onto our telescope so we can ...

2021-11-17: Are Black Holes Actually Fuzzballs?

  • 06:12: Lose that pesky infinite density and we can start making sense of physics again.
  • 06:17: It turns out that though, that string theory can make sense of the black hole event horizon also.

2021-11-02: Is ACTION The Most Fundamental Property in Physics?

  • 15:58: ... if physicists and philosophers of science collaborated more. So my sense is that constructor theory does try to bring a philosophical perspective ...

2021-10-20: Will Constructor Theory REWRITE Physics?

  • 14:48: ... comments are telling me that you  lot are really starting to get a sense   of how far our perception of  reality is from baseline ...

2021-10-13: New Results in Quantum Tunneling vs. The Speed of Light

  • 06:06: In a sense, the leading edge of the old wavefunction becomes the center of the new wavefunction.

2021-10-05: Why Magnetic Monopoles SHOULD Exist

  • 01:51: ... both cases - electron spin or or a circular electric current there’s a sense of electric charge in ...
  • 09:25: Let me try to give you a sense of why - and we have to talk about the Higgs field to do this.

2021-09-21: How Electron Spin Makes Matter Possible

  • 05:59: ... to actual electrons? Well electrons don’t really rotate in the classical sense. They’re quantum objects described by a quantum wavefunction. A ...

2021-09-07: First Detection of Light from Behind a Black Hole

  • 15:03: ... now wouldn’t yield universe whose interior is expanding quickly - in the sense of particles racing apart from each other. You can look at our past ...

2021-08-10: How to Communicate Across the Quantum Multiverse

  • 06:28: ... other and they behave as though the others aren’t there. This gives us a sense of why it seems impossible to test the Many Worlds hypothesis - those ...
  • 12:00: ... real math is quite a bit more complicated, but I've given you a sense of it. In order to build an actual telephone you probably want to send ...

2021-08-03: How An Extreme New Star Could Change All Cosmology

  • 01:31: ... a white dwarf, and 2) definitely spinning way too fast to make sense. ...

2021-07-21: How Magnetism Shapes The Universe

  • 03:17: As with the gravitational field, in a sense there’s only one universal magnetic field.
  • 16:13: But worlds in that sense aren’t separate, distinguishable realities.

2021-07-13: Where Are The Worlds In Many Worlds?

  • 11:02: Well, sort of - in the sense that the position wavefunctions of the two yous can be mapped to these spatial locations.
  • 11:11: In that sense, we can think of the different worlds as separate patterns of ripples on the surface of the pond.

2021-07-07: Electrons DO NOT Spin

  • 01:26: ... explanation makes sense if we imagine  electrons like spinning bicycle wheels - or spinning ...
  • 03:48: ... for that to make sense, we really need to think of electrons as balls of spinning charge - but ...

2021-05-19: Breaking The Heisenberg Uncertainty Principle

  • 03:31: ... object sometimes be a “wave” and some times be a “particle?” In a sense it is both, and in a sense it is neither - rather, there are the ...

2021-04-21: The NEW Warp Drive Possibilities

  • 09:26: The details are technical to put it mildly - but let me try to give you a sense of the difference.

2021-03-16: The NEW Crisis in Cosmology

  • 17:08: ... of general relativity. But the whole series makes so much more sense when you   think about it. For exame, when Greedo shot ...

2021-03-09: How Does Gravity Affect Light?

  • 02:26: Or of the sense of weightlessness in freefall in a gravitational field versus the weightlessness felt in the absence of gravity.
  • 09:09: But in a sense, light gets refracted by gravitational fields - or at least you can model it that way.

2021-02-24: Does Time Cause Gravity?

  • 01:23: And I’m not going to explain it now - because in a sense it’s not true.
  • 02:58: ... move particles through time according to those velocities, we have this sense of time flowing in a gradient - faster streams distant from the Earth, ...
  • 09:57: It makes more sense to talk about the end of inflation as the beginning of such a universe, rather than the beginning of global inflation.

2021-02-10: How Does Gravity Warp the Flow of Time?

  • 00:53: But otherwise, as far as the universe is concerned, the sense of floating you feel in both circumstances is exactly the same.
  • 01:00: ... the sense of weight you feel stationary on the surface of the Earth is identical ...
  • 09:00: ... someone standing in a gravitational field must experience the same sense of weight AND the same time dilation that you would get from being spun ...
  • 11:19: ... is it that if you’re inside a gravitational field, your sense of “now” is continually sweeping forward compared to regions further ...
  • 11:29: ... 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?

  • 09:40: But for that to make sense I should probably explain what a WIMP is.

2021-01-19: Can We Break the Universe?

  • 04:45: But someone moving relative to you has a totally different sense of “now”.
  • 10:17: The ladder’s sense of “simultaneous” is represented by these sloped lines.
  • 12:05: ... need to follow the logic and the paradoxes evaporate, and so we make sense of this deeply strange, but unfailingly self-consistent theory of ...
  • 14:28: ... of reality the more we realize that the stories we tell to make sense of the math are just models to help our intuition, and that strikingly ...

2020-12-22: Navigating with Quantum Entanglement

  • 03:03: ... surely the most interesting one: the idea that proposes birds can in a sense see the Earth’s magnetic field due to quantum weirdness happening inside ...
  • 04:40: As far as we know, birds can sense the orientation of the field lines, but NOT their polarity arrows.
  • 04:52: In principle it’s easy to come up with ways to sense a magnetic field.
  • 08:59: That could lead to a true visual sense of magnetic field orientation.

2020-12-15: The Supernova At The End of Time

  • 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?

  • 00:57: How does this cosmic-level arrow of time get translated into our mental sense of time?
  • 01:03: To understand this, let’s think about where our sense of the passage of time arises in our brains.
  • 01:43: ... also have internal clocks that give a sense of time elapsed, but to understand why the thermodynamic arrow of time ...
  • 07:41: ... be recorded in its present - it would “remember” that future in the same sense that it remembers its past, just like the proton ...

2020-11-18: The Arrow of Time and How to Reverse It

  • 02:53: ... between time slices of our block universe. Time has a symmetry in the sense that the past and future aren’t differentiated by the laws of physics. ...
  • 09:39: ... time - the flow of time defined by increasing entropy -connected to our sense of the flow of time? Why do we experience time sequences passes in the ...
  • 11:16: ... or in the big bang. The effect is the same: effective free will, in the sense that our choices have fundamental unpredictability. Dr Diagrams also ...

2020-11-11: Can Free Will be Saved in a Deterministic Universe?

  • 03:53: ... information goes in as the stuff of the brain and the experience of our senses, and information comes out, sometimes in the form of the choices we ...
  • 07:01: ... could say that the cause arises outside the universe in a supernatural sense, but then all we need to do is expand our definition of the universe to ...

2020-11-04: Electroweak Theory and the Origin of the Fundamental Forces

  • 07:14: So it makes sense to see what other symmetries do.

2020-10-27: How The Penrose Singularity Theorem Predicts The End of Space Time

  • 02:16: ... into a Schwarzschild black hole,   singularity and all. Makes sense - if all  particles are falling directly towards each   ...
  • 04:35: ... I’m going to give you a sense  of Penrose’s breakthrough, and why it   revolutionized general ...
  • 07:05: ... can only give you a vague sense of why this is the case. Penrose proves it by showing ...

2020-10-13: Do the Past and Future Exist?

  • 08:41: Even your own sense of the present changes with your cvmotion.
  • 10:54: ... that only the past exists and the future doesn’t - at least in the sense of a growing block universe, again, because the “present” of someone ...

2020-09-28: Solving Quantum Cryptography

  • 11:13: ... they can pretty easily eliminate the errors - find a message that makes sense. ...

2020-09-21: Could Life Evolve Inside Stars?

  • 08:01: I mean energy that is available for use, in a thermodynamic sense.
  • 13:16: Because beauty is not a fundamental property of the universe - it is, by definition, a subjective sense.

2020-09-08: The Truth About Beauty in Physics

  • 03:02: ... it supremely elegant - but it’s not straightforward to define where that sense of elegance comes ...
  • 03:13: Ptolemy, Copernicus, Kepler, Newton, Einstein - each followed their own sense of mathematical beauty in this long quest to understand gravity.
  • 03:39: Just as with beauty in any field, it’s fundamentally a subjective sense, and so difficult to define.
  • 03:48: ... Ptolemy and Copernicus it was a sense that certain mathematical forms are intrinsically more beautiful or ...
  • 05:59: ... is a great example, and we can be sure that Newton himself felt a sense of aesthetic pleasure when he realized that the motions of both the moon ...
  • 08:20: Dirac knew he was on the right track based on an abstract sense that the underlying laws of the universe SHOULD be elegant.
  • 12:20: Ultimately, our sense of beauty can’t be cleanly defined - not in art and not in physics.
  • 12:25: ... our brains - many factors contribute subconsciously to this qualitative sense of ... yes, that feels right, or that stirs ...
  • 12:36: And that imprecise subjectivity may be a reason to pay attention to our sense of beauty in physics, rather than reject it.

2020-08-24: Can Future Colliders Break the Standard Model?

  • 04:56: In a sense this was the last missing piece of the standard model - the one remaining particle that physicists thought MUST exist.
  • 12:48: ... that sense, this new knowledge has all to do with honor and country but it has ...

2020-08-17: How Stars Destroy Each Other

  • 13:42: ... it right - they do deform into a sort of 8 or hourglass shape - in the sense that the event horizons sort of reach out to each other, connect, before ...

2020-08-10: Theory of Everything Controversies: Livestream

  • 00:00: ... that will be needed to understand how quantum mechanics really makes sense and the last thing i'll say is that i think everybody's asking the ...

2020-07-28: What is a Theory of Everything: Livestream

  • 00:00: ... now what's the wrong theory of gravity i must add right but in that sense string theory you know starts with quantum mechanics and an assumption ...

2020-07-20: The Boundary Between Black Holes & Neutron Stars

  • 13:48: So, in a sense both happen, but you don’t get to report what you saw to anyone.

2020-06-30: Dissolving an Event Horizon

  • 00:57: In the most real possible sense, the interior of the black hole is its own separate spacetime, excised from our universe.

2020-06-15: What Happens After the Universe Ends?

  • 02:23: But let me try to give you a sense of a situation where scale might not matter.

2020-05-27: Does Gravity Require Extra Dimensions?

  • 05:45: And that’s the sense in which there may be more than 3 spatial dimensions in this universe.

2020-05-11: How Luminiferous Aether Led to Relativity

  • 02:33: ... in Huygens’ mind, that theory also required the aether in order to make sense. ...

2020-05-04: How We Know The Universe is Ancient

  • 03:09: ... expanding universe. The recession of the galaxies makes perfect sense in the context of Einstein’s then-new general theory of ...

2020-04-28: Space Time Livestream: Ask Matt Anything

  • 00:00: ... means I certainly didn't read the flyer 50 page paper but I got a sense of of the fundamentals of the notion not enough to be able to say ...

2020-04-22: Will Wormholes Allow Fast Interstellar Travel?

  • 09:17: ... in Einstein’s equation in order for those equations to make physical sense. But these energy conditions are more guidelines than rules, and have ...
  • 11:03: ... believe it can’t exist, if for no other reason than our very strong sense that the universe has to make sense at a fundamental level. Stephen ...

2020-03-31: What’s On The Other Side Of A Black Hole?

  • 10:20: Confusing. And it’s okay that this doesn’t make much sense - faster than light travel always leads to silly paradoxes because it’s impossible.

2020-03-16: How Do Quantum States Manifest In The Classical World?

  • 05:32: ... that basis and only that basis - in this case with spin-down. There’s a sense that causal influence is transferred potentially faster than light. This ...
  • 13:47: ... the network of entanglements that connect those quantum systems. In a sense, WE exist in such a network. In this web of mutually consistent ...

2020-02-18: Does Consciousness Influence Quantum Mechanics?

  • 02:31: Each solitary electron must know the entire wave pattern - which means it must, in some sense, travel through both slits.
  • 04:17: ... electrical signals in other parts of the brain result in a subjective sense of the original electron's chosen destination on the ...

2020-01-06: How To Detect a Neutrino

  • 04:11: ♪ ♪ Let me try to give you a sense of why neutrinos are so elusive.

2019-12-17: Do Black Holes Create New Universes?

  • 01:18: Our universe appears, in some sense, designed.
  • 03:12: First up, for any of this to make sense black holes need to create universes.
  • 16:08: ... 3: Assume self-sampling assumption makes sense and internet access is bell curved over over the duration of its ...

2019-11-11: Does Life Need a Multiverse to Exist?

  • 12:34: ... ideas about multiverses, the strong anthropic principle seems to make sense of the incredible fine tuning of our own ...
  • 12:58: And we will test it - next time, and so perhaps make a little more sense of our extremely fine-tuned patch of space time.

2019-10-21: Is Time Travel Impossible?

  • 03:08: We’ve seen no evidence of tachyons, and common sense tells us we probably never will.
  • 10:12: In other words, the universe has to make sense, time-travel or no.

2019-09-23: Is Pluto a Planet?

  • 02:34: The solar system finally made observational and theoretical sense: there were now 6 planets orbiting the sun in perfect mathematical harmony.

2019-08-06: What Caused the Big Bang?

  • 02:09: For a hypothesis like this to be taken seriously, the physics also has to make sense.
  • 04:13: ... need to be vastly stronger than dark energy. Also, for inflation to make sense presumably the universe also needed to stop inflating at some point ...

2019-07-25: Deciphering The Vast Scale of the Universe

  • 00:16: To get a sense of that scale, consider this grain of sand held at arm’s length.
  • 03:05: All sense of distance is lost.

2019-07-18: Did Time Start at the Big Bang?

  • 11:36: ... people love cyclic and regenerating universes They appeal to our sense of narrative which might be a reason to be wary of these hypotheses Now ...

2019-06-17: How Black Holes Kill Galaxies

  • 05:14: ... and by "kill" , I mean make them dead which I guess is the usual sense of the word ...
  • 14:13: ... the the screen every time Actually that's just because Mittens can sense my allergy and like all cats is drawn to my ...

2019-04-03: The Edge of an Infinite Universe

2019-03-20: Is Dark Energy Getting Stronger?

  • 07:45: This last one – the X-ray corona – may help us make sense of everything.

2019-03-13: Will You Travel to Space?

  • 04:57: ... science-fictiony than rockets. And I think they're inspiring in that sense. ...

2019-02-07: Sound Waves from the Beginning of Time

  • 15:20: Well, first I'd say that the number zero existed, at least in a sense before we discovered it.

2019-01-24: The Crisis in Cosmology

  • 16:34: mathematically the same as a positive mass particle moving forward in time That notion makes sense in the math,...

2019-01-16: Our Antimatter, Mirrored, Time-Reversed Universe

  • 08:43: ... which itself is required for all of quantum mechanics to make sense - well to get at this we're going to need to talk about what we mean by ...
  • 16:06: ... in the standard model it's just that it's not yet "right" - in this sense. To quote me it was never really right and to quote Peter Weitz quoting ...

2018-12-20: Why String Theory is Wrong

  • 00:57: But sometimes it can be hard to let go of the sense that a beautiful theory must be right.
  • 07:25: ... give you a sense of what a duality looks like, let's go back to the good old simplicity ...
  • 08:01: ... number times the radius of the compactified dimension. That makes sense, it basically gives the length of the ...
  • 12:14: ... superstring theories with each other and with super gravity restored the sense of beauty to string theory. It appeared to be on the track to rightness ...
  • 12:29: Well, in a sense they were never really right. This M-theory thing, it's still not well-defined.

2018-11-14: Supersymmetric Particle Found?

  • 08:13: But seeing these very high energy tau events from directly below doesn't make sense.

2018-10-31: Are Virtual Particles A New Layer of Reality?

  • 03:16: In that sense, virtual particles are the building blocks of our approximation of the behavior of quantum fields.

2018-10-10: Computing a Universe Simulation

  • 07:02: And that makes some intuitive sense.

2018-09-20: Quantum Gravity and the Hardest Problem in Physics

  • 04:07: In a sense, both the source and the solution to the information paradox came from the discover of Hawking radiation.
  • 15:09: Well, actually, those don't really contain information because they aren't real in the sense that we think of normal particles.

2018-09-12: How Much Information is in the Universe?

  • 02:21: Well, common sense would suggest that for maximum information content, depends on volume, not surface area.
  • 05:35: In fact, in a sense, the holographic principle is a compression algorithm.

2018-08-23: How Will the Universe End?

  • 04:11: This is matter that is fully collapsed in a quantum mechanical sense.
  • 15:39: But elementary particles themselves don't have size in this sense.

2018-08-15: Quantum Theory's Most Incredible Prediction

  • 03:57: And it doesn't really make sense to think of an infinitesimal point as rotating.
  • 07:45: Every interaction with virtual photons that can happen, does, at least in a sense.

2018-07-25: Reversing Entropy with Maxwell's Demon

  • 03:51: In fact, this configuration isn't low entropy in the thermodynamic sense.
  • 10:01: In a sense, it's a measure of the uncertainty of the event.
  • 10:45: In fact, Shannon's entropy is, in a sense, just a generalization of thermodynamic entropy.

2018-07-11: Quantum Invariance & The Origin of The Standard Model

  • 03:48: It's literally complex in the mathematical sense.

2018-06-27: How Asteroid Mining Will Save Earth

  • 09:39: For larger solid asteroids, it may make sense to actually tunnel into their interiors, but that's a way down the track.

2018-06-13: What Survives Inside A Black Hole?

  • 02:44: Given the one-way nature of the event horizon, the loss of this information makes some intuitive sense.
  • 09:36: I hope I've given you a sense of why mass, charge, and angular momentum are remembered by the space outside a black hole.

2018-05-23: Why Quantum Information is Never Destroyed

  • 05:30: In that sense, it's deterministic and time-reversal symmetric and so conserves information.
  • 13:31: It doesn't make anywhere near that much sense.

2018-05-16: Noether's Theorem and The Symmetries of Reality

  • 06:52: In a sense, the principle is axiomatic.

2018-05-09: How Gaia Changed Astronomy Forever

  • 09:36: Makes perfect sense, right?

2018-04-04: The Unruh Effect

  • 02:56: Well, that's if you ignore the expansion of the universe, and this makes sense.

2018-03-28: The Andromeda-Milky Way Collision

  • 10:54: So in that context, it makes sense to refer to it that way.

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.

2018-01-17: Horizon Radiation

  • 14:30: Second, stars aren't complex in the sense that Penrose means.

2017-11-08: Zero-Point Energy Demystified

  • 05:26: Unfortunately, the vacuum energy between Casimir plates is very much positive in an absolute sense.

2017-11-02: The Vacuum Catastrophe

  • 05:31: Now, this is all extremely unintuitive, and we spent five episodes trying to give you a sense of why this is true.
  • 09:48: And at the same time, neutrinos don't interact electromagnetically, so they're, in that sense, dark.
  • 10:01: So in that sense, neutrinos aren't part of it, but these definitions are vague, so don't read too much into it.

2017-09-13: Neutron Stars Collide in New LIGO Signal?

  • 15:37: Oh, my god, that makes so much sense.

2017-08-30: White Holes

  • 01:21: A white hole is the opposite of a black hole in a very literal mathematical sense.
  • 06:44: We can make some sense of the behavior of this strange region by using the Penrose diagram.

2017-08-10: The One-Electron Universe

  • 06:16: In the sense of these fundamental symmetries, anti-matter is time-reversed matter.
  • 08:29: It doesn't really make sense to think of an electron as a thing that carries an identifying label.

2017-07-26: The Secrets of Feynman Diagrams

  • 00:42: ... leads from a measured initial state to a measured final state does, in a sense, happen-- at least in the ...

2017-07-19: The Real Star Wars

  • 15:27: Well, in a sense, that's actually the case.

2017-07-12: Solving the Impossible in Quantum Field Theory

  • 10:19: In a sense, you capture the theoretical infinite terms within an experimental finite number.
  • 14:25: ... the sense I wanted to relay is that the total probability depends on the length of ...

2017-07-07: Feynman's Infinite Quantum Paths

  • 11:12: One powerful tool in making sense of these infinite possible events also came from Richard Feynman, specifically Feynman diagrams.

2017-06-21: Anti-Matter and Quantum Relativity

  • 13:39: ... that there are probably other bubbles in this scenario means it makes sense to talk about those bubbles as separate universes and as the whole ...

2017-06-07: Supervoids vs Colliding Universes!

  • 11:00: ... health, and learn how your DNA influences your facial features, hair, sense of taste and smell, and sleep ...

2017-05-31: The Fate of the First Stars

  • 03:05: Makes sense they'd all be gone now, right?
  • 10:26: It's hard to make sense of this light, unless there are a ton of population three stars in those galaxies.

2017-05-17: Martian Evolution

  • 10:56: ... come from, learn how DNA impacts your health, facial features, hair, sense of taste and smell, and sleep ...

2017-05-03: Are We Living in an Ancestor Simulation? ft. Neil deGrasse Tyson

  • 03:33: Let's dive deeper into this rabbit hole and decide if this actually makes sense.

2017-04-05: Telescopes on the Moon

  • 09:31: ... health, and learn how your DNA influences your facial features, hair, sense of taste and smell, even sleep ...

2017-03-29: How Time Becomes Space Inside a Black Hole

  • 09:15: ... so isn't actually traveling in time, even though there's a sense of past events in one direction-- the collapsing star-- and future ...
  • 09:47: Below the event horizon, there's still a sense of spatial upness and downness.
  • 14:06: So the oscillations were, in a sense, fundamental, just not sustainable.

2017-02-22: The Eye of Sauron Reveals a Forming Solar System!

  • 08:31: And that would make sense if they formed at the same time.

2017-01-19: The Phantom Singularity

  • 00:57: That makes sense, but what about when R gets really close to 0?
  • 01:12: That doesn't really make a lot of sense.
  • 03:01: That makes sense.

2016-12-21: Have They Seen Us?

  • 01:57: What manner of civilization would be powerful enough to sense this bubble?

2016-11-16: Strange Stars

  • 12:12: ... than 180 degrees, but would also not see the triangle curve over in the sense that there would be no ...

2016-10-26: The Many Worlds of the Quantum Multiverse

  • 01:54: In a sense, different possible superposed histories appear to converge on one final outcome.

2016-08-10: How the Quantum Eraser Rewrites the Past

  • 00:41: Now this episode isn't going to make a lot of sense unless you've seen the first one.
  • 07:49: For that reason it makes sense to be cautious, even of the Copenhagen interpretation.

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.
  • 02:09: So it makes perfect sense that it should produce an interference pattern, right?

2016-05-18: Anti-gravity and the True Nature of Dark Energy

  • 14:23: They give us a sense of unity and optimism that feeds back into all of our efforts.

2016-04-20: Why the Universe Needs Dark Energy

  • 02:35: k is, in a sense, the shape of the universe-- its spatial curvature, as well as its spatial extent, finite or infinite.

2016-04-13: Will the Universe Expand Forever?

  • 00:46: ... have come to call "dark energy." In order to get a truly meaningful sense of the forces governing the fate of our universe, and especially the ...

2016-03-23: How Cosmic Inflation Flattened the Universe

  • 09:48: In that sense, inflation is the initial kick of the Big Bang.
  • 11:36: It's true that this force is, in a sense, fictitious.

2016-03-16: Why is the Earth Round and the Milky Way Flat?

  • 02:34: ... gravity has spherical symmetry in the sense that, if you're some distance from a space thing of any shape and ...

2016-03-02: What’s Wrong With the Big Bang Theory?

  • 03:11: ... these grand unified theories, except they aren't theories in the same sense as relativity or evolution because we don't know which, if any, are ...
  • 08:56: ... this sense, it may be more accurate to think of the Big Bang Theory not as a theory ...

2016-02-17: Planet X Discovered?? + Challenge Winners!

  • 07:06: And they pulsate much more quickly than they should because our sense of their time is compressed.

2016-01-27: The Origin of Matter and Time

  • 07:45: ... arrangement of many light-like paths that only taken together, give us a sense of stillness, a sense of thingness, and a sense of ...

2016-01-13: When Time Breaks Down

  • 02:17: And in a sense, the most elementary particles are intrinsically timeless.

2015-10-22: Have Gravitational Waves Been Discovered?!?

  • 01:19: However, the analogy can give us a sense of what a gravitational wave really is.

2015-10-07: The Speed of Light is NOT About Light

  • 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.
  • 06:23: Finally, assume that the universe make sense.

2015-08-05: What Physics Teachers Get Wrong About Tides!

  • 13:13: We're using the word acceleration here in two different and mutually exclusive senses.
  • 13:18: In the Newtonian sense, acceleration would mean put a frame of reference at Earth's center.
  • 13:31: So in that sense, those two points are not accelerating.
  • 13:35: In the four-dimensional curved spacetime sense, you need to give something some kind of inherent, absolute 4D geometric meaning.
  • 13:49: ... that we should really use as the standard, even in the three-dimensional sense, of ...
  • 14:06: You have to do that because it's only the falling frames that are "purely" non-accelerating in the four-dimensional sense.
  • 15:03: Keep learning and listening to as much as you can, even if it doesn't make sense at first.

2015-07-29: General Relativity & Curved Spacetime Explained!

  • 03:57: And by the way, pictures like this are not intended to make literal visual sense.

2015-07-22: SPECIAL ANNOUNCEMENT + Flat Spacetime Geometry Comments

  • 02:03: But as John Buluba and [INAUDIBLE] pointed out, after you view it a second time, it starts to make more sense.

2015-07-15: Can You Trust Your Eyes in Spacetime?

  • 08:23: And more interestingly, the length of that vector, at least in the sense of spacetime interval length, is minus the speed of light squared.

2015-07-02: Can a Circle Be a Straight Line?

  • 00:36: ... over the next few episodes I'm going to try to give you a sense of the answer, a flow chart level view of the relevant concepts and how ...
  • 00:52: Otherwise, what I'm about to say will make no sense.

2015-06-24: The Calendar, Australia & White Christmas

  • 01:29: ... the fact is that Earth's axis precesses in the opposite sense of Earth's orbit around the sun, so that the equinoxes and solstices ...

2015-06-17: How to Signal Aliens

  • 00:04: We did a prior episode about whether it makes sense to believe they exist.
  • 06:35: ... Earth's surface obviously is not accelerating outward in the ordinary sense of the word, then we wouldn't be able to call falling frame inertial and ...
  • 06:55: ... of the seeming tension between the equivalence principle and common sense that can only be resolved once we change our concept of the geometry of ...
  • 09:42: All directions are equivalent in the absence of some kind of real gravity in the Newtonian sense picking out some direction.

2015-05-27: Habitable Exoplanets Debunked!

  • 02:27: But the only sense in which we've actually seen Kepler 186F is this graph.

2015-05-20: The Real Meaning of E=mc²

  • 00:46: Unfortunately, none of these statements is quite correct, so trying to make sense of them can be frustrating.
  • 00:51: ... think instead we can get a better sense of what m equals E over c squared means if we start with some things ...
  • 07:02: Is it some kind of baseline mass in the pre-Einstein sense of the word?
  • 07:58: ... in that sense, even though it's not correct to think of mass is an indicator of amount ...

2015-05-06: Should the First Mars Mission Be All Women?

  • 00:30: See, several articles in journals or in the press have asked whether it might make sense for a Mars crew to consist mostly or even entirely of women.

2015-04-29: What's the Most Realistic Artificial Gravity in Sci-Fi?

  • 00:53: Whether you want to think of gravity in the Newtonian or the Einsteinian sense, the problem persists.

2015-03-25: Cosmic Microwave Background Explained

  • 06:00: ... momentum that you rotate into the reverse orientation in opposite senses. ...

2015-03-18: Can A Starfox Barrel Roll Work In Space?

  • 02:09: ... the thumb of your right hand would point if you curl your fingers in the sense of the object's ...

2015-03-04: Should We Colonize Venus Instead of Mars?

  • 05:03: So it might make sense to colonize Venus with cloud cities.

2015-02-25: How Do You Measure the Size of the Universe?

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