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Shvoong Home>Science>SCCHWARZSCHILD'S RADIUS Summary

SCCHWARZSCHILD'S RADIUS

Book Summary   by:sajeev vasudevan     Original Author: A.VASUDEVAN
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The Schwarzschild, or gravitational, radius defines the position of the surface of a nonrotating black hole. Within the volume of space surrounded by this surface, called the event horizon, no light can escape. The Schwarzschild radius, which is named for Karl Schwarzschild, can be calculated from the formula r = 2GM/c6 = 3 km X (M/Mw), where G is Newton's gravitational constant, c is the speed of light, M is the mass of the black hole and Mw is the mass of the Sun. An object that undergoes gravitational collapseÑthat is, one that contracts inside its Schwarzschild radiusÑdisappears from view, leaving behind a black hole.
Published: October 18, 2006   
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