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Ball and Ring: Rate of Expansion and Contraction

The Ball and Ring experiment illustrates thermal expansion by heating only the metal ball. Initially, the ball fits through the ring. When the ball is heated, it expands due to the increased kinetic energy of its atoms, causing it to grow in size. As a result, the heated ball can no longer pass through the ring, which remains unchanged in size. On the other side If the ball initially fits through the ring, heating them both will make the ball larger and the ring’s hole wider. This demonstrates how materials expand when heated.