Search PBS Space Time

What are you looking for?

	2021-11-17: Are Black Holes Actually Fuzzballs? 01:48: Black holes should have an enormous number of so-called microstates - hidden configurations - and this translates to an enormous entropy. 01:58: ... that black holes “have no hairs” to describe the absence of observable microstates in a black hole, which, on the surface, seems to contradict his black ... 06:37: ... guys found a way to count the microstates on the horizon- the number of possible configurations of stringy ... 07:13: ... a compelling reason to think that string theory might explain where the microstates of black holes ... 01:48: Black holes should have an enormous number of so-called microstates - hidden configurations - and this translates to an enormous entropy.
	2018-07-25: Reversing Entropy with Maxwell's Demon 01:31: ... defined by the number of possible configurations of particles-- or microstates in physics-speak-- that could produce the same observed set of ... 02:29: ... are around 10 to the power of 108 possible microstates that give you this smoothly distributed macrostate, and you'd need close ... 04:26: ... average thermodynamic properties are the same everywhere, are just weird microstates among the many microstates of a very high entropy ... 11:49: ... out there, the ergodic hypothesis is basically the assumption that all microstates are equally probable over long periods of ... 12:13: If different microstates can have different probabilities, then you need to include those probabilities in your equation for entropy. 13:08: Zombie Blood would like us to walk through the math used in calculating the number of possible microstates on the Go board.
	2018-07-18: The Misunderstood Nature of Entropy 04:45: For a given macrostate, all microstates consistent with its thermodynamic properties are equally likely. 04:52: ... some macrostates, there are lots of different microstates or arrangements of particles that lead to roughly the same thermodynamic ... 05:06: ... a system to do its own thing, it'll eventually try out all possible microstates that are possible given the laws of ... 05:18: So if you look at the system at some random point in time, it'll be in a completely random microstate chosen from all possible microstates. 05:29: Well, probably the one that's consistent with the most microstates. 05:59: Some microstates are weird though, and they give different macrostates because they're different average distributions. 06:09: That microstate is a factor of 2 times 10 to the power of 107 less likely than one of the many smoothly mixed microstates. 07:47: ... equation tells us that entropy is the logarithm of the number of microstates consistent with the current macrostate times the Boltzmann ... 08:04: ... the way, there are certain special microstates, special arrangements of particles that look highly ordered but are still ... 08:49: So the macrostate that defines thermodynamic equilibrium is, by definition, the one with the most microstates, which also means the maximum entropy. 09:24: In both cases, you are reducing the number of accessible microstates which, by definition, must reduce entropy. 10:45: ... future, but for now, please be careful to keep your number of accessible microstates low, avoid thermal equilibrium, and keep being that brilliant macrostate ... 04:45: For a given macrostate, all microstates consistent with its thermodynamic properties are equally likely. 07:47: ... equation tells us that entropy is the logarithm of the number of microstates consistent with the current macrostate times the Boltzmann ... 10:45: ... future, but for now, please be careful to keep your number of accessible microstates low, avoid thermal equilibrium, and keep being that brilliant macrostate that ... 08:04: ... the way, there are certain special microstates, special arrangements of particles that look highly ordered but are still ...

3 result(s) shown.

Help · About · Index