སུ་ཝར་ཅིལ་ཚངས་ཕྱེད།
phys. The radius of the event horizon of a black hole: a critical radius that must be exceeded by a body if light from its surface is to reach an […]
phys. The radius of the event horizon of a black hole: a critical radius that must be exceeded by a body if light from its surface is to reach an […]