When these two steel balls collide, the impact generates enough heat to burn a hole through a regular piece of paper. A simple yet spectacular experiment that demonstrates the transformation of mechanical energy into heat energy (and sound!).
Makes a spectacular demonstration.
Each ball is 2 inches (2.54 cm) in diameter and weighs approximately one pound (453 grams)!
⚠ Safety warning
CHOKING HAZARD
WARNING: This product can expose you to chemicals including Lead, which are known to the State of California to cause cancer and birth defects or other reproductive harm. For more information, go to www.P65Warnings.ca.gov.