GRAVITATIONAL PHYSICS 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 Birkhoff's theorem A theorem of general relativity which states that all spherical gravitational fields, whether from a star or from a black hole, are indistinguishable at large distances. A consequence of this is that purely radial changes in a spherical star do not affect its external gravitational field. Related category    • GRAVITATIONAL PHYSICS Also on this site: Encyclopedia of Alternative Energy & Sustainable Living Encyclopedia of History Transport Concepts & Designs (partner site) BACK TO TOP