MS-203 RING AND BALL WITH STAND

RING AND BALL WITH STAND

Ring and ball apparatus for performing Gravesande’s experiment, a simple experiment demonstrating the thermal expansion used in physics education It consists of a small metal ball suspended by a chain from a stand, with a metal ring below it. The ring is made just big enough so when both pieces are at the same temperature, the ball fits through the ring. However, when the ball is heated by dipping it in boiling water, or playing a spirit lamp flame over it, the metal expands and it can no longer fit through the ring. When it has cooled down, it fits through the ring again. In this example, the ring and ball are made of brass, because it has a greater coefficient of expansion than iron.

An easy and simple way to Teach students of thermal expansion i.e on heating.

Apparatus consist of a brass ball of 19 mm diameter attached to the stand rod by clamp and brass Ring, through which the ball pass through in cold, but when heated do not pass.