Schwarzschild radius

the radius at which a gravitationally collapsing celestial body becomes a black hole.[195560; named after Karl Schwarzchild (18731916), German astronomer]
* * *
Radius inside which the gravitational attraction between a body's particles must cause its irreversible gravitational collapse, named for Karl Schwarzschild.This is thought to be the final fate of the most massive stars (see black hole). The gravitational radius (R_{g}) of an object of mass M is given by R_{g} = 2GM/c^{2}, where G is the universal gravitational constant and c the speed of light. For a star like the Sun, the Schwarzschild radius would be about 1.8 mi (3 km).* * *
also called gravitational radiusthe radius below which the gravitational attraction between the particles of a body must cause it to undergo irreversible gravitational collapse. This phenomenon is thought to be the final fate of the more massive stars (see black hole).The Schwarzschild radius (R_{g}) of an object of mass M is given by the following formula, in which G is the universal gravitational constant and c is the speed of light: R_{g} = 2GM/c^{2}.For a mass as small as a human being, the Schwarzschild radius is of the order of 10^{23} cm, much smaller than the nucleus of an atom; for a typical star such as the Sun, it is about 3 km (2 miles).The Schwarzschild radius is named for the German astronomer and physicist Karl Schwarzschild (Schwarzschild, Karl), who investigated the concept in the early 20th century.* * *
Universalium. 2010.
Look at other dictionaries:
Schwarzschild radius — The Schwarzschild radius (sometimes historically referred to as the gravitational radius) is a characteristic radius associated with every mass. It is the radius for a given mass where, if that mass could be compressed to fit within that radius,… … Wikipedia
SchwarzschildRadius — Der Ereignishorizont liegt im einfachsten Fall an der Grenze der äußeren Schwarzschild Metrik und stellt damit den Umfang eines Schwarzen Loches dar. Ein Beobachter, der im Unendlichen (d.h. aus einer flachen Region der Raumzeit) auf das Schwarze … Deutsch Wikipedia
SchwarzschildRadius — Schwạrzschild Radius, Astrophysik: Grenzradius einer sphärischen nicht rotierenden und nicht elektrisch geladenen Massenverteilung, bei dessen Unterschreitung ein emittiertes Photon (Lichtquant) nicht mehr entweichen kann. Für eine Masse M… … UniversalLexikon
schwarzschild radius — ˈshwȯrtˌshild , ˈs(h)wȯrtsˌchīld ; ˈshvärtˌshilt noun Usage: usually capitalized S Etymology: after Karl Schwarzschild died 1916 German astronomer : the radius of the spherical boundary within which a given mass (as of a star) must collapse to… … Useful english dictionary
Schwarzschild radius — /ʃvɔtstʃaɪld ˈreɪdiəs/ (say shvawtschuyld raydeeuhs) noun the radius at which the outer boundaries of a black hole would start, which is where the escape velocity first and exactly equals the speed of light. {named after Karl Schwarzschild,… … Australian English dictionary
Schwarzschild radius — noun 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 … Wiktionary
Schwarzschild — ist der Familienname folgender Personen: Heinrich Schwarzschild (1803–1878), deutscher Arzt und Dichter Karl Schwarzschild (1873–1916), deutscher Astronom und Physiker Leopold Schwarzschild (1891–1950), deutscher Publizist Martin Schwarzschild… … Deutsch Wikipedia
Schwarzschild — is a German surname meaning black sign or black shield and may refer to: * Karl Schwarzschild, (1873 1916), physicist and astronomer * Martin Schwarzschild, (1912 1997), astronomer * Roger Schwarzschild, linguistNamed after Karl Schwarzschild: *… … Wikipedia
Schwarzschild metric — In Einstein s theory of general relativity, the Schwarzschild solution (or the Schwarzschild vacuum) describes the gravitational field outside a spherical, non rotating mass such as a (non rotating) star, planet, or black hole. It is also a good… … Wikipedia
Schwarzschild , Karl — (1873–1916) German astronomer Schwarzschild was the son of a prosperous Jewish businessman from Frankfurt am Main. His interest in astronomy arose while he was at school and he had published two papers on binary orbits by the time he was 16.… … Scientists