Matter

Ball and Ring Set
Easily demonstrates thermal expansion and contraction!
Brass ball and ring with wooden handles. Ball passes freely through ring at room temperature. Heating the ball or cooling the ring clearly shows the effects of thermal expansion or contraction, as the ball will no longer pass through the ring. Units are approximately 10" in length.
Ball and Ring Set
Easily demonstrates thermal expansion and contraction!
Brass ball and ring with wooden handles. Ball passes freely through ring at room temperature. Heating the ball or cooling the ring clearly shows the effects of thermal expansion or contraction, as the ball will no longer pass through the ring. Units are approximately 10" in length.