Ball and Ring, Expansion Demonstration. Pack 10

• The Ball and Ring Apparatus is a visible demonstration of the expansion of metals. When the ball or ring is heated, the ball will not pass through the ring. When cooled, however, the ball passes through the ring freely. The ball and ring are mounted on an insulated handle. Instructions included. Sold in a pack of 10.
• Educational demonstration of thermal expansion.
• Includes instructions

The Ball and Ring Apparatus is a visible demonstration of the expansion of metals. When the ball or ring is heated, the ball will not pass through the ring. When cooled, however, the ball passes through the ring freely. The ball and ring are mounted on an insulated handle. Instructions included. Sold in a pack of 10.