The Tantalus cup sounds like a dribble glass, but that prank simply has holes hidden in a design on the side so that the liquid leaks when the cup is tipped. The Tantalus cup has a much more elegant design based on the physics of a siphon and can be traced to the Greek mathematician Pythagoras, who is more famous for his theorem: “In a right-angled triangle the square of the hypotenuse is equal [to the sum of] the squares of the two other sides” or a2 + b2 = c2. Pythagoras wasn’t exactly a prankster and his invention was better known as the Greedy cup after its true purpose – to keep drinkers from imbibing too much.The image shows how the Pythagorean cup works. You can see the Tantalus cup here.
Friday, January 12, 2018
Earliest Known Practical Joke Discovered in Croatia
spill onto their clothing instead of reaching their lips.