Why does a can collapse when a vacuum pump removes air from it?
The reason why a can collapses when a vacuum pump removes air from the can is because of the sucked-in molecules in the can that are forced to come out. In a vacuum, there are no air particles to support the walls of the can.
A vacuum pump is a device that removes gas molecules from a sealed volume in order to leave behind a partial vacuum. The first vacuum pump was invented in 1650 by Otto von Guericke, and was preceded...