A Professor Demonstrates How to Topple a Giant Domino With a Tiny One and Explains the Physics Behind Why It Works

University of Toronto geophysics professor Stephen Morris demonstrates how to topple a giant 100-lb domino using a chain reaction started by a tiny domino that measures only five millimeters tall and one millimeter thick. Morris explains that a domino that is balanced against gravity has enough potential energy to knock down another domino approximately one-and-a-half times its size.

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