SPACE AND TIME A  B  C  D  E  F  G  H  I  J  K  L  M  N  O  P  Q  R  S  T  U  V  W  X  Y  Z           HOME ABOUT CATEGORIES SITE MAP COPYRIGHT ADVERTISE CONTACT entire Web this site Schwarzschild black hole Main features of a Schwarzschild black hole. Credit: N. Rumiano The simplest kind of black hole in theory but one that could never occur in the real universe. A Schwarschild black hole doesn't rotate (i.e. has zero angular momentum), has no electric charge, and exists in a spacetime with no other masses. It arises as an exact solution to Einstein's equations of general relativity worked out by Karl Schwarzschild in 1916. There are three important features of a Schwarzschild black hole: A photon sphere 1.5 times bigger than the Schwarzschild radius An event horizon: effectively, the outer surface of the black hole; its distance from the singularity is the Schwarzschild radius A point singularity where space and time have infinite curvature Compare with Kerr black hole and Reissner-Nordstrom black hole. Related category    • SPACE AND TIME Also on this site: Encyclopedia of Alternative Energy & Sustainable Living Encyclopedia of History Transport Concepts & Designs (partner site) BACK TO TOP