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Any physical object whose radius R becomes less than or equal to the radius of Schwarzschild will undergo a gravitational collapse and become a black hole where light cannot escape from gravitational fields, this one represents a solution of the Einstien equation, introduced by Schwarzschild, it contains two singularities, one describes the center, and the other describes what is called the horizon of events; black hole and its singularities cannot be considered as Einsteinian's pacetimes in any classical sense. Then a new theory of gravitation must be constructed to represent them.

Produktbeschreibung
Any physical object whose radius R becomes less than or equal to the radius of Schwarzschild will undergo a gravitational collapse and become a black hole where light cannot escape from gravitational fields, this one represents a solution of the Einstien equation, introduced by Schwarzschild, it contains two singularities, one describes the center, and the other describes what is called the horizon of events; black hole and its singularities cannot be considered as Einsteinian's pacetimes in any classical sense. Then a new theory of gravitation must be constructed to represent them.
Autorenporträt
Abdelkader BENZIANMagister in Physik, Nationale Polytechnische Schule von Oran, Algerien. Mitglied des Labors für Teilchenphysik und statistische Physik, LPPPS, Ecole Normale Supérieure de Kouba-Alger, Algérie.