The Pythagoras Cup

The Pythagoras Cup

The Pythagoras cup is also called a Greedy cup. Its secret lies in its central column, which houses an upside-down-u-shaped pipe. Today, some toilets use the same ancient design as a flushing mechanism.


Key Facts In This Video

  • 1

    Pythagoras invented the Pythagoras cup so that none of his students would receive more than their share of wine. (0:19)

  • 2

    Watch an animated demonstration of how the Pythagoras cup prevents drinkers from getting too greedy: (1:48)

  • 3

    Putting liquid mercury at the bottom of a Pythagoras cup will prevent it from working. (3:09)

See all





Get smarter every day! Like us on Facebook.
You'll get the most interesting and engaging topics in your feed, straight from our team of experts.