
20221019: The Equation That Explains (Nearly) Everything!
 04:36: ... the behavior of particles in a certain volume, we have to add up infinitely many Lagrangian Densities over that volume. Although in practice ...


20220817: What If Dark Energy is a New Quantum Field?
 12:31: ... 1  that’s the big rip, in which all points in space eventually become infinitely far apart. Fortunately, that seems ...


20220504: Space DOES NOT Expand Everywhere
 09:16: ... general relativity, space can be infinitely divided. That means we can start with a universe that’s small and grid ...
 10:33: ... all works if space is infinitely divisible. But we know that at the smallest scales, general relativity ...
 10:52: ... which must expand out of the old Planck lengths. That implies an infinitely divisible space emerging from within each Planck ...
 11:22: ... fabric of space, it’s still possible to expand it or condense it infinitely without changing its fundamental nature. Empty space can be rescaled ...
 13:16: ... horizon, in which case we never would have even known that we live in an infinitely expanding ...


20220330: Could The Universe Be Inside A Black Hole?
 12:16: ... black hole and so on ad infinitum in a series of black holes, forming an infinitely nested space ...


20220216: Is The Wave Function The Building Block of Reality?
 17:28: ... at your “infinite distance”. And it’s the surface from which light is infinitely redshifted  sapped of all energy  before it reaches that infinite ...


20220210: The Nature of Space and Time AMA
 00:03: ... of these dimensions is continuous in that you can subdivide space uh infinitely uh you know to to uh arbitrarily small pieces and same with time you ...


20210818: How Vacuum Decay Would Destroy The Universe
 11:34: ... species, let alone your own lifetime. Of course, in an infinitely or sufficiently large universe then vacuum decay has definitely ...


20210616: Can Space Be Infinitely Divided?
 01:16: ... the energy of light in this heatglow was not infinitely divisible. Rather came in quanta  chunks of energy that we now ...


20201027: How The Penrose Singularity Theorem Predicts The End of Space Time
 10:15: ... and weave past each other in an insanely dense but not infinitely dense knot. This might be the case if the universe underwent cyclic ...
 12:51: ... by no means geodesically incomplete  rather it extends infinitely into the future AND the past. With your help Space Time might do ...


20200630: Dissolving an Event Horizon
 01:12: Without it, the infinitely dense singularity and its surrounding madness is exposed to the outside universe.


20200615: What Happens After the Universe Ends?
 00:45: ... goes like this: the infinitely far future, when the universe has expanded exponentially to to an ...


20200511: How Luminiferous Aether Led to Relativity
 14:06: ... started from a singularity. How do you go from infinitessimally small to infinitely ...
 14:42: ... galaxies we can see were compacted into a tiny point. There were just infinitely many of those tiny ...


20200428: Space Time Livestream: Ask Matt Anything
 00:00: ... now this doesn't sound very intuitive because you know you could just infinitely create an enormous amount of mass if you're allowed to continually ...


20200331: What’s On The Other Side Of A Black Hole?
 08:44: ... as an inevitable crushing future, in which the space around you becomes infinitely ...


20200303: Does Quantum Immortality Save Schrödinger's Cat?
 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.


20200211: Are Axions Dark Matter?
 14:39: ... actually 13.5 billion years would be pretty close the beginning of an infinitelylonglasting eternal inflation. Of course all of this is assuming that the universe ...


20200203: Are there Infinite Versions of You?
 07:04: That means at least some regions must be repeated infinitely.


20191217: Do Black Holes Create New Universes?
 03:26: ... black hole collapses, its mass doesn’t all end up stuck in the central, infinitely dense ...


20191202: Is The Universe Finite?
 00:11: Although according to a new paper, it may literally be infinitely smaller than we previously thought.
 01:38: ... the initial analysis from the Planck map, pointed to a universe that is infinitely large and geometrically flat, and is dominated by the influences of dark ...
 07:33: That curvature was slight  meaning the universe is still unthinkably vast, but if this is right then it’s not infinitely large.


20191104: Why We Might Be Alone in the Universe
 14:47: Troy Henry asked if a torus would serve as an infinitely long cylinder  well the answer is, sadly, no.


20191021: Is Time Travel Impossible?
 07:13: It’s simple: just build an infinitely long cylinder of extreme density and set it rotating insanely quickly about its main axis.
 07:46: If you don’t have the budget for an infinitely long cylinder, you could try building just a very, very long cylinder… and be horribly disappointed.
 07:55: Stephen Hawking showed that unless the cylinder is infinitely long this doesn’t work – unless you also modify the spacetime with negative energy.
 11:17: ... prohibits it  for example, the quantum vacuum may be unstable in the infinitely iterating loops of a closed timelike ...


20191007: Black Hole Harmonics
 00:41: ... highly theoretical objects – static, unchanging black holes viewed from “infinitely” far ...


20190819: What Happened Before the Big Bang?
 09:06: ... stunning; inflation never stops, but rather forms a fractal structure of infinitely expanding space in dispersed with bubble universes of all different ...
 09:56: Can eternal inflation last infinitely into the past as well as the future?


20190806: What Caused the Big Bang?
 12:59: But these will have to wait for a followup episode when we step into the multiverse of an infinitely inflating...


20190424: No Dark Matter = Proof of Dark Matter?
 00:03: ... space but looks like a Jedi in a threedimensional surface infinitely far away fleam notes that this is a form of Jedi Time Lord duality try ...


20190410: The Holographic Universe Explained
 00:24: ... spacetime one dimension lower – like a hologram projected from a surface infinitely far ...
 05:43: We see scale invariance in fractal patterns, where the rules defining the structures repeat to infinitely large or small scales.
 13:06: Anyone inside the hyperbolic space still has to travel infinitely far to get to that edge.
 14:27: An abstract mathematical surface infinitely far from our location and from our intuition, projecting inwards our familiar holographic spacetime.


20190403: The Edge of an Infinite Universe
 00:50: Beyond it there exists at a minimum of thousands and possibly infinitely more regions just as large.
 03:57: ... the other hand, assuming all these types exist, there should be infinitely more people in infinite universes compared to people in noninfinite ...
 05:03: ... singularity) It was Roger Penrose who defeated the true infinity of an infinitely large ...
 08:37: He found that two “infinitely distant” regions could not both be in a perfect vacuum state if a black hole lay between them.
 11:56: The boundary is infinitely far away and looks the same no matter where we travel.
 14:40: The hologram part is because the lower dimensional space can be thought of as the infinitely distant boundary of the higher dimensional space.
 14:49: Every particle, every gravitational effect in the bulk is represented by quantum fields on an infinitely distant surface.


20190328: Could the Universe End by Tearing Apart Every Atom?
 00:05: ... cats and dogs living together and then tragically separated by the infinitely accelerating expansion of space on subatomic ...
 10:03: ... be nothing but hopelessly isolated elementary particles separated by infinitely expanding space. That's a hell of a ...
 12:53: ... all be over much sooner when the universe is ripped to shreds by the infinitely accelerating subatomic structure of ...


20190207: Sound Waves from the Beginning of Time
 15:51: In fact, we can imagine infinitely more things than a real.


20190130: Perpetual Motion From Negative Mass?
 13:18: ... and is repelled by negative mass, come up with a way to use a pair of infinitely accelerating positive and negative mass objects to build a perpetual ...


20180823: How Will the Universe End?
 09:09: ... diffuse and dim as the accelerating expansion of space continues and the infinitely long progression to absolute heat death is all that ...
 14:24: If, by contrast, you have an infinitely thin shell of charge surrounding a mass, your g equals 5/3.


20180411: The Physics of Life (ft. It's Okay to be Smart & PBS Eons!)
 01:24: ... or all the matter in the observable universe being crunched into an infinitely dense point are low ...


20180221: The Death of the Sun
 11:27: ... point, but we could equally make it the center of the Earth or a point infinitely far ...


20180117: Horizon Radiation
 09:29: In momentum space, we can think of it as a superposition of infinitely many momentum modes.


20171206: Understanding the Uncertainty Principle with Quantum Fourier Series
 05:01: Is it even possible to make an instantaneous spike at one point in time out of a bunch of sine waves that themselves extend infinitely through time?
 05:12: ... to get a spike at one point in time, you need to use infinitely many different frequency sine waves, each of which exists at all points ...
 05:30: ... a perfectly known frequency is a simple traveling sine wave that extends infinitely in time so the time of its existence is ...
 14:27: Well, Jaden, the trick is to assume geckos with infinitely high tensile strength.


20170928: Are the Fundamental Constants Changing?
 13:41: ... whether it would be feasible to build something like an aragoscope with infinitely many concentric rings by using some sort of advanced diffracting ...


20170830: White Holes
 03:24: ... events occurring at the event horizon, including folding into it, happen infinitely far in the ...
 04:14: We find the singularity again lurking infinitely far in the past.
 07:20: The light rays from any crossing reach us infinitely far in the future, even if the black hole plunge began far in the past.
 08:11: The past singularity and past event horizon are infinitely far in the past from our point of view.


20170707: Feynman's Infinite Quantum Paths
 03:27: But when something travels through empty space, it's like it's traveling through infinitely packed barriers, each with infinite slits.


20170621: AntiMatter and Quantum Relativity
 06:38: ... moving in an electromagnetic field could keep releasing energy as light infinitely, and sink lower and lower, to infinite negative energy ...
 07:00: Imagine an infinitely deep ocean of electrons that exists everywhere in the universe.
 08:44: These fields are more like membranes than infinitely deep oceans.


20170607: Supervoids vs Colliding Universes!
 09:37: But regardless, in an infinitely inflating space time, collisions between bubble universes are eventually expected.


20170426: Are You a Boltzmann Brain?
 04:17: Imagine an infinitely large room a universe that's in perfect thermal equilibrium for infinite time.


20170405: Telescopes on the Moon
 13:07: So do you get infinitely spaghettified before you are tortellinified?


20170322: Superluminal Time Travel + Time Warp Challenge Answer
 07:06: Well, you just trace the photon paths, assuming for a moment that an FTL ship doesn't produce infinitely red or blue shifted photons.


20170119: The Phantom Singularity
 01:43: ... often use the word singularity to describe the hypothetically infinitely dense core of a black hole, but in math the meaning of this word is much ...
 02:54: It's possible to pass their time zones infinitely quickly, but only because of your choice of spherical coordinates.
 09:42: ... and so it can hang out at the event horizon, which also only exists at 1 infinitely stretched out ...


20170104: How to See Black Holes + Kugelblitz Challenge Answer
 09:33: Fortunately, I said that the sphere was infinitely strong.
 10:41: ... slight problem of having blocked out the sun, but hey, we just built an infinitely strong Dyson sphere and charged it with an impossible amount of ...


20161214: Escape The Kugelblitz Challenge
 00:14: ... of space and time, allowing us to fit onto the one diagram the infinitely stretched spacetime in the vicinity of a black hole's event ...
 05:55: Plan A is to build an infinitelystrong Dyson sphere surrounding the earth just outside the moon's orbital radius.


20160622: Planck's Constant and The Origin of Quantum Mechanics
 01:05: There are a few problems with this paradox, but one is that it assumes that space is infinitely divisible.
 06:19: The problem turned out to be that in classical physics, everything can be infinitely divided.
 06:51: ... Rayleigh and Jeans were chasing Zeno's tortoise, infinitely dividing the smallest remaining energy states, and so never ever finding ...


20160427: What Does Dark Energy Really Do?
 00:33: Observations show that out universe is infinitely expanding.
 05:46: ... recollapsing universe and faint or more distant in a lowdensity, infinitelyexpanding ...


20160420: Why the Universe Needs Dark Energy
 04:04: Such a universe is infinitely large, or "open." But "k equals 0" means the universe is flat.
 04:51: An underdense, infinitely expanding universe should be hyperbolic.
 06:13: This is totally inconsistent with the level of positive curvature we'd expect from an infinitely expanding universe.


20160302: What’s Wrong With the Big Bang Theory?
 00:10: The Big Bang Theory suggests that once the entire universe was compacted into an infinitely small speck at the beginning of time.


20151209: How to Build a Black Hole
 10:05: On our clock, the singularity forms infinitely far in the future.


20151007: The Speed of Light is NOT About Light
 10:52: Imagine an infinitely long ruler with markings spaced at every inch.
 10:56: If we stretched the ruler so that the markings are spaced at every two inches, the ruler is still infinitely long.


20150930: What Happens At The Edge Of The Universe?
 02:44: Bad news, you'd have to travel infinitely far, even if you were in a spaceship that could travel at the speed of light.
 05:49: And there are many types of infinity, including some that involve infinitely repeating versions of this bit of the universe.
 07:12: ... our universe may just be a slowly expanding bubble in an exponentially infinitelyinflating ...


20150819: Do Events Inside Black Holes Happen?
 09:13: ... not what you mean by "density." Maybe you mean that all black holes are infinitely dense because all the stuff that goes into the black hole collapses to ...


20150715: Can You Trust Your Eyes in Spacetime?
 01:48: And I've got an infinitely long stick with tick marks on it attached to me at the x equals zero mark, my own personal xaxis.


20150520: The Real Meaning of E=mc²
 05:32: Suppose we call the potential energy of a proton and electron zero when they're infinitely far apart.
