Smash, Bang, Boom Make fire using large steel ball barrings.   email to friend
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You've probably heard of rubbing two sticks together to make fire... but who would think of using large steel ball barrings to make fire? When two 1-pound, 2-inch diameter, chrome steel spheres are smashed together, enough heat is generated at the point of contact to burn a hole in a piece of ordinary paper! This amazing demonstration dramatically illustrates the conversion of mechanical energy into heat energy. Although there are no flames, a charred hole appears along with the odor of burnt paper.