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Pythagoras Cup (Greedy Cup) filled with Mercury
Key Facts In This Video
Pythagoras invented the Pythagoras cup so that none of his students would receive more than their share of wine. 00:19
Watch an animated demonstration of how the Pythagoras cup prevents drinkers from getting too greedy: 01:48
Putting liquid mercury at the bottom of a Pythagoras cup will prevent it from working. 03:09