Ball and Ring Apparatus Tool Physics Demonstration
Ball and Ring Apparatus Tool
Ball and Ring Apparatus
Demonstrate the thermal-expansion of metal with this simple but visually impressive apparatus. -- The brass ball will pass through the ring when both are at the same temperature (i.e. when both are hot or cold). -- However, if you heat the ball but not the ring, the ball will not pass through!
One of our own suggested experiments - heating the ring while putting the ball in ice water - you'll see what happens!
Both the ball and ring are mounted on light colored natural wooden handles and are each approximately 10" (25.5cm) in length.