Bouncing occurs primarily when an electromechanical contact closes and the kinetic energy stored in the moving part of the contact is released, causing the part to bounce back and sever the contact. Usually this process, which is often called chatter, is repeated several times at briefer intervals as the bouncing distance decreases. The subsequent contact tremor (oscillating contract force) is not considered as part of the bouncing process – it is actually part of the „dynamic contact resistance“ or decay phase
