
20220928: Why Is 1/137 One of the Greatest Unsolved Problems In Physics?
 08:33: ... value for the fine structure constant or many of the other fundamental constants. ...
 12:55: ... hints at a connection between the other fundamental constants  perhaps pointing to an underlying common mechanism that set the ...


20220210: The Nature of Space and Time AMA
 00:03: ... one thing that is clear is that the speed of light isn't the most fundamental constant okay it's a constant with units and um we tend to think of the ...


20210616: Can Space Be Infinitely Divided?
 01:16: ... We now see it everywhere in quantum mechanics  it’s a fundamental constant of nature that defines the scale of the ...
 06:39: ... We have this thing that’s full of our wonderful fundamental constants  in fact, in the exact form as the Planck length ...
 07:48: ... This explains why the Planck length is this combination of fundamental constants  it’s the wavelength of a photon that creates a black ...


20200728: What is a Theory of Everything: Livestream
 00:00: ... out a hundred thousand um in contrast if you try to predict the 32 fundamental constants of the standard model using some new model that itself has a thousand ...


20200218: Does Consciousness Influence Quantum Mechanics?
 15:01: ... asked whether we would get new quantum fields and new particles if other fundamental constants turned out to vary over space, in the same way that a variable theta ...


20200211: Are Axions Dark Matter?
 04:33: ... new terms get added and the strength of those terms is governed by a new fundamental constant  theta. It’s tricky to describe what theta actually signifies  in fact ...
 05:16: ... zero  at least not within the standard model of particle physics. This fundamental constant may have ended up very close to zero just by chance, but physicists hate ...


20200113: How To Capture Black Holes
 12:49: ... The hypothesis is trying to explain the apparent fine tuning of the fundamental constants, not the origin of everything. Ideas like cosmological natural selection ...


20191217: Do Black Holes Create New Universes?
 00:30: Why, for example, are the fundamental constants  like the mass of the electron or the strength of the forces  just right for the emergence of life?
 00:50: ... there are countless universes with different fundamental constants, then it’s not surprising that a few exist with the right numbers for ...
 02:10: ... in their formation the fundamental constants of the daughter universes are shifted slightly and randomly from their ...
 04:02: ... expanded on the procreating black hole idea by suggesting that the fundamental constants of these new universes could be different to their ...
 04:14: ... seems plausible  if fundamental constants can change at all then surely it’s in the highest possible energy ...
 05:36: ... there’s a prediction: the fundamental constants that define black hole production should be close to optimal in a given ...
 08:09: ... holds, there are no doubt different regions in the landscape of possible fundamental constants where different types of black hole are ...
 10:44: ... natural selection is meant to explain the fine tuning in the fundamental constants, which appear to be either set by design or by extreme ...
 13:40: Please email us with the configuration of fundamental constants you’d prefer and we’ll get it right out to you.


20191202: Is The Universe Finite?
 15:40: ... typical universe? Well it would be one whose particular configuration of fundamental constants gives you a universe similar in some respect to lots of other ...


20191118: Can You Observe a Typical Universe?
 03:01: That means the fundamental constants and initial conditions of the universe must be just right to allow nice habitable planets to form.
 03:31: ... get interesting when you add the fact that our universe seems to have fundamental constants and initial conditions that seem extremely finetuned for the eventual ...
 04:21: ... all, it doesn’t tell us WHY the fundamental constants take on the values that they do  or why they may vary between ...
 14:21: ... very different to ourselves, that could potentially exist if the fundamental constants were ...
 14:36: Well, actually, fine tuning arguments for the fundamental constants for the most part take that into account.
 15:26: ... out that I missed one possibility  perhaps the dials defining the fundamental constants were neither randomly set nor deliberately ...
 15:59: ... that gives you only one universe with an unavoidable combination of fundamental constants that was completely devoid of ...


20191111: Does Life Need a Multiverse to Exist?
 00:35: Those equations always include one or more fundamental constants  simple numbers that set the scale for the equation.
 01:02: ... model of particle physics, there are something like 20 independent fundamental constants of ...
 11:13: Can we justify the idea of a multiverse with changing fundamental constants?
 11:24: ... this candidate theory of everything suggests that the values of the fundamental constants, including the vacuum energy, are set by the particular configuration of ...
 11:47: And there are other proposals for how the fundamental constants might vary over space or between universes.
 12:21: ... when black holes form, with each new universe having slightly different fundamental constants to its ...
 15:08: ... able to get different types of complexity and even life by tweaking the fundamental constants in different ways, but there seem to be way WAY more combinations of ...


20180815: Quantum Theory's Most Incredible Prediction
 04:45: And we talked about this fundamental constant in an earlier episode.
 11:32: This is the fundamental constant governing the strength of the electromagnetic interaction of charged particles.


20180711: Quantum Invariance & The Origin of The Standard Model
 00:33: Our laws of physics are equations of motion tuned by the fundamental constants.


20171004: When Quasars Collide STJC
 10:52: Last week, we talked about the intriguing possibility that the fundamental constants of nature are changing.
 11:00: Nevermind asks whether the fundamental constants are connected to each other.
 11:35: A few of you took issue with my suggestion that changing fundamental constants help with the finetuning problem.
 11:41: ... the anthropic principle solves the problem without even changing the fundamental constants. ...
 11:50: ... even the multiverse has the same laws of physics, including the same fundamental constants. ...


20170928: Are the Fundamental Constants Changing?
 00:20: There is a hint of evidence that the fundamental constants that govern our universe may evolve over time, and even from one location to another.
 01:14: Why the fundamental constants take the values they do is a very deep and unanswered question.
 01:33: They predict that the fundamental constants may not be constant at all, and instead, may vary over time and space.
 01:46: ... and the evidence, because there's a hint of evidence that at least one fundamental constant is, in fact, ...
 01:56: To measure changes in a fundamental constant, we first need to choose the right constant.
 03:20: ... be confident, though we've seen a change in a fundamental constant, way to study a dimensionless constant one that has no units, and ...
 09:57: ... to be necessary for the appearance of life are quite sensitive to some fundamental constants, Alpha ...
 10:25: ... if the fundamental constants vary from place to place, then it's not surprising that we find ...
 12:34: Richard, thank you, and may your own fundamental constants remain stable and forever within a range that supports life as we know it.


20160622: Planck's Constant and The Origin of Quantum Mechanics
 10:47: And combined with a small handful of other fundamental constants, it governs the behavior of everything in this space time.


20151015: 5 REAL Possibilities for Interstellar Travel
 11:24: ... that point, it perhaps becomes more interesting to ask why other fundamental constants of nature have the values that they do compared to the speed of ...
 11:33: ... that said, the relative units of the fundamental constants, the speed of light, the strength of the fundamental forces, et cetera, ...


20151007: The Speed of Light is NOT About Light
 08:14: That value has to be a combination of the fundamental constants of Maxwell's equations.


20150527: Habitable Exoplanets Debunked!
 10:09: ... are on the table to modify the definition of the SI kilogram in terms of fundamental constants of nature, like Planck's constant and the speed of ...
