Search PBS Space Time

What are you looking for?

	2022-09-28: 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  ...
	2021-06-16: Can Space Be Infinitely Divided? 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 ... 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 hole of the ...
	2020-07-28: 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 ...
	2020-02-18: 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 ...
	2020-01-13: 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 ...
	2019-12-17: 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. 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?
	2019-12-02: 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 ...
	2019-11-18: 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 fine-tuned 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 ...
	2019-11-11: 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 ... 00:35: Those equations always include one or more fundamental constants - simple numbers that set the scale for the equation. 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 the extra ...
	2018-07-11: Quantum Invariance & The Origin of The Standard Model 00:33: Our laws of physics are equations of motion tuned by the fundamental constants.
	2017-10-04: 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 fine--tuning 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. ...
	2017-09-28: 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. 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. 09:57: ... to be necessary for the appearance of life are quite sensitive to some fundamental constants, Alpha ... 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. 10:25: ... if the fundamental constants vary from place to place, then it's not surprising that we find ourselves in ...
	2016-06-22: 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.
	2015-10-15: 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, ...
	2015-10-07: 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.
	2015-05-27: 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 ...

16 result(s) shown.

Help · About · Index