AST-1A Lecture Notes - Lecture 32: Curvatures Of The Stomach, Escape Velocity, Searchlight
Document Summary
Black hole: place where gravity is so strong that nothing (not even light) can escape from within it. Therefore escape velocity is greater than the speed of light. Space and time are not distinct they are bound together as four dimensional space time. Gravity arises from curvature of space time and is not always easy to visualize. The boundary between the inside of the black hole and the universe outside. The size of a black hole is the size of its event horizon. More massive black holes have larger schwarzchild radii: depended on the black holes mass. All matter formed in a black hole should be crushed to an infinitely tiny and dense. Einstein"s theory of relativity predicts that spacetime should grow infinitely curved. Quantum physics predicts that space time should fluctuate chaotically near the. Black holes ought to be fairly common, and evidence strongly suggests that they exist.
