General Relativity Consider a spherical blackbody of constant temperature and mass M whose surface lies at radial coordinate r = R. An observer located at the surface of the sphere and a distant observer both measure the blackbody radiation given off by the sphere.Both observers use the Stefan-Boltzmann law, to determine the radius of the spherical blackbody. Show that R R = V1– 2GM/Rc²

General Relativity Consider a spherical blackbody of constant temperature and mass M whose surface lies at radial coordinate r = R. An observer located at the surface of the sphere and a distant observer both measure the blackbody radiation given off by the sphere.Both observers use the Stefan-Boltzmann law, to determine the radius of the spherical blackbody. Show that R R = V1– 2GM/Rc²