Videos with tag technology
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Lawrence Krauss Discussion (1/12) - Richard Dawkins

Richard Dawkins and Lawrence Krauss sat down for a public discussion at Stanford University on Sunday, March 9th 2008. The focus was on Science education, but the discussion also covered religion, physics, evolution and more.

Channels: Our Enterprise 

Added: 716 days ago by lonewolf

Runtime: 01:00 | Views: 428 | Comments: 1

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Web According to STI International

The Semantic Web According to STI International The future of the semantic web.

Channels: Our Enterprise 

Added: 771 days ago by starnamer

Runtime: 01:00 | Views: 191 | Comments: 0

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Stephen Hawking - Campus Party speech (2006)

Prof Stephen Hawking speech to Campus Party 2006 Hawking's principal fields of research are theoretical cosmology and quantum gravity. In 1971, in collaboration with Sir Roger Penrose, he proved the first of many singularity theorems; such theorems provide a set of sufficient conditions for the existence of a singularity in space-time. This work showed that, far from being mathematical curiosities which appear only in special cases, singularities are a fairly generic feature of general relativity. Hawking also suggested that, after the Big Bang, primordial or mini black holes were formed. With Bardeen and Carter, he proposed the four Laws of black hole mechanics, drawing an analogy with thermodynamics. In 1974, he calculated that black holes should thermally create and emit subatomic particles, known as Hawking radiation, until they exhaust their energy and evaporate. In collaboration with Jim Hartle, Hawking developed a model in which the Universe had no boundary in space-time, replacing the initial singularity of the classical Big Bang models with a region akin to the North pole; while one cannot travel North of the North pole, there is no boundary there. While originally the no-boundary proposal predicted a closed Universe, discussions with Neil Turok led to the realization that the no-boundary proposal is consistent with a Universe which is not closed also.

Channels: The Astronomers 

Added: 825 days ago by deek

Runtime: 03:49 | Views: 236 | Comments: 0

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