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Item #: AP9031 

Price: $17.25

In Stock.

In the Ball and Ring Thermodynamics Apparatus for physical science and physics, perform the classic demonstration "thermal expansion of metal" with a ball and ring.

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Product Details

Perform the classic demonstration “thermal expansion of metal” with this ball and ring apparatus. Brass ball passes freely through ring at room temperature but when the ball is heated in a flame, it no longer passes through the ring. Plastic or wooden handle provides excellent thermal insulation andkeeps hands cool.