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Schwarzschild radius


from The American Heritage® Dictionary of the English Language, 4th Edition

  • n. The radius of a collapsing celestial object at which gravitational forces exceed the ability of matter and energy to escape, resulting in a black hole.

from Wiktionary, Creative Commons Attribution/Share-Alike License

  • n. The radius of an object such that, if all its mass were compressed within that radius, the escape velocity would equal the speed of light


After Karl Schwarzschild (1873-1916), German astronomer.
(American Heritage® Dictionary of the English Language, Fourth Edition)


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  • I tried to put something together with the Governator and how things always come full circle...but I made a big mass of it and then my mind went blank.

    June 30, 2011