8C10.u2 - Accretion Disk
Demonstrate an accretion disk.
Accretion can be represented using a large mass, marbles, and a rubber diaphragm stretched across a hole in a wood frame. Marbles are placed at the center of the diaphragm representing the matter that will be captured by another star. The large mass which represents the star is placed on the edge of the rubber diaphragm and pushed into a spiral trajectory. As the large mass gets closer to the center, the marbles get pulled into the spiral trajectory. In a very short time, the large mass is stationary in the center, and the marbles are spiraling around it until they eventually come to rest around the larger mass.