This ladies and gentlemen is the revised online discussion platform for the class. I will post material and questions on this site and you will answer questions and respond to other student's posts as well.
Black Holes Explained Nicholas Pawelczyk ’11 A black hole is an object with such powerful gravity that nothing can escape from it, including light. The black hole's mass is concentrated in a point of almost infinite density called a singularity. At the singularity itself, gravity is “almost infinitely” strong, so it crushes normal space-time out of existence. As the distance from the singularity increases, its gravitational influence lessens. At a certain distance, which depends on the singularity's mass, the speed needed to escape from the black hole equals the speed of light. This distance marks the black hole's "horizon," which is like its surface. Anything that passes through the “horizon” is trapped inside the black hole. Black holes come in several varieties, depending on mass.
Black Holes Explained
ReplyDeleteNicholas Pawelczyk ’11
A black hole is an object with such powerful gravity that nothing can escape from it, including light. The black hole's mass is concentrated in a point of almost infinite density called a singularity. At the singularity itself, gravity is “almost infinitely” strong, so it crushes normal space-time out of existence. As the distance from the singularity increases, its gravitational influence lessens. At a certain distance, which depends on the singularity's mass, the speed needed to escape from the black hole equals the speed of light. This distance marks the black hole's "horizon," which is like its surface. Anything that passes through the “horizon” is trapped inside the black hole. Black holes come in several varieties, depending on mass.