In physics, a wormhole is a hypothetical topological feature of spacetime that is basically a 'shortcut' through space and time. A wormhole has at least two mouths which are connected to a single throat or tube. If the wormhole is traversable, matter can 'travel' from one mouth to the other by passing through the throat. While there is no observational evidence for wormholes, spacetimes containing wormholes are known to be valid solutions in general relativity. The term wormhole was coined by the American theoretical physicist John Wheeler in 1957. However, the idea of wormholes was invented already in 1921 by the German mathematician Hermann Weyl in connection with his analysis of mass in terms of electromagnetic field energy.

Author: marcoyoga
Keywords: Lucht- en ruimtevaart
Added: March 18, 2008

These are Steve Gelbart's family movies of when his father, Abe Gelbart, took them to Princeton in 1947 and met with many scientific luminaries. In order of appearance: opening scene: Atle Selberg at left, Carl Ludwig Siegel at right (the middle two people are unknown) Around 33 seconds: Einstein 1:06 Godel on left 1:25 Selberg at the right, his wife Heddy in the middle 1:41 Paul Erdos (left) and Hermann Weyl (right) 3:01 Paul Dirac at right, and his student Harish-Chandra at left And in the last second, Steve Gelbart along with his twin brother Bill, and their mother.

Author: stevemiller163
Keywords: Albert Einstein Paul Dirac Kurt Godel Atle Selberg Harish-Chandra Erdos Hermann Weyl
Added: January 10, 2008