Lawrence Krauss: The Universe From Nothing
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I figured people would watch the first few minutes and figure out whether they wanted to watch, but at teh virg33n's request:
He talks about the current view of cosmology. The title of the talk is a reference to the importance dark matter/energy in our current understanding and the fact that this makes it possible to have a universe with a total energy of 0. If the total energy is 0, then it could have been created from nothing, hence the title of the talk.
He talks about general relativity, some of the early problems with it, how they were resolved, how we know the universe is expanding, the difficulties in observing that it is, quantum theory and how that fits in with relativity, and ultimately why we're all fucked.
He makes some really interesting comments at the end (actually throughout) such as that in the future, all evidence of the big bang will be erased (or more precisely obscured from view), and that if those future people have to develop an understanding of their own view of the universe, they might come up with an explanation, but it will be the wrong one.
Anyway, he's a very engaging speaker and I highly recommend it.
----------
I figured people would watch the first few minutes and figure out whether they wanted to watch, but at teh virg33n's request:
He talks about the current view of cosmology. The title of the talk is a reference to the importance dark matter/energy in our current understanding and the fact that this makes it possible to have a universe with a total energy of 0. If the total energy is 0, then it could have been created from nothing, hence the title of the talk.
He talks about general relativity, some of the early problems with it, how they were resolved, how we know the universe is expanding, the difficulties in observing that it is, quantum theory and how that fits in with relativity, and ultimately why we're all fucked.
He makes some really interesting comments at the end (actually throughout) such as that in the future, all evidence of the big bang will be erased (or more precisely obscured from view), and that if those future people have to develop an understanding of their own view of the universe, they might come up with an explanation, but it will be the wrong one.
Anyway, he's a very engaging speaker and I highly recommend it.
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