Description:

This Ball & Ring Expansion Demonstration Apparatus is a classic physics teaching tool used to illustrate the thermal expansion of metals. It consists of two brass rods—one with a solid ball and the other with a ring—both mounted on insulated plastic handles for safe handling. Heating the ball prevents it from passing through the ring, clearly demonstrating how temperature affects metal dimensions. Ideal for science labs, classrooms, and educational demonstrations focusing on thermal properties and material behavior. Supplied individually with recyclable handle.