Greed is one of the qualities that does not paint a person. People have encountered the desire to take possession of something or satisfy their whims in ancient times. In order to suppress manifestations of greed, they came up with various tricks, rewards and punishments. So, many centuries ago, an ancient Greek thinker invented a cup. There was nothing unusual about its design. But only those who knew and followed the measure could get drunk from it. In the modern world, the ancient invention is popular. It even has several titles. One of them - the "cup of greed", emphasizes what a seemingly ordinary mug struggles with.
Who invented the cup of greed
Let's plunge a little into history. During the time of Ancient Greece, slave labor was involved in many industries (especially heavy ones). They also lived on one of the Greek islands - Samos. On a land plot located in the Aegean Sea, there was a shortage of fresh water. In order to have enough life-giving moisture for all slaves, one ancient Greek philosopher - Pythagoras, came up with a simple device. Outwardly, it resembled an ordinary drinking goblet.
But a cunning mechanism of action was hidden in the bowl. He allowed to drink water only to those who knew the measure and were accustomed to sharing with their neighbors. But the greedy, on the contrary, could not even take a sip from the goblet. It is believed that the invention of the ancient Greek thinker quickly gained popularity. Over time, several names appeared for him - the Pythagoras cup, the greed cup, the fair cup, the Pythagorean glass.
How the cup of greed works
There was a ledge inside the bowl. He was not there to diversify the drinking cup. A mechanism was hidden in the ledge. He even did not allow the greedy to take even one sip.
In his bowl, Pythagoras used the principle that in the modern world is involved in the operation of the siphon. Under certain conditions, through a curved tube, liquid from one reservoir completely flows into another.
For example, if you pour liquid into the Pythagorean bowl so that the upper part of the protrusion is visible, then a person who is thirsty will be able to drink water. But if the level of the drink exceeds a certain line (the protrusion will not be visible), then it will all flow out through the hole in the bottom of the cup. You won't be able to take a sip.
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The principle of operation of the siphon is known to many car owners. If you suddenly run out of fuel, and the gas station is still far away, then the drivers of passing cars can come to the rescue. Gasoline (or diesel fuel) from the fuel tank will calmly flow into another container. All you need is a pipe and a little skill.
The laws of physics push the fluid from one reservoir to another (according to the siphon principle). Many have heard about gravity (at least they studied it at school). But there is also another force of attraction - cohesion. With its help, the molecules of one substance seem to stick to each other, creating a kind of chain. It is thanks to this property that liquid flows from one reservoir to another. If we do not speak in scientific language, then the principle of operation of the Pythagorean bowl is as follows. The first drop that gets into the tube due to overflow draws in all the rest of the water. Rushing to the lowest point - the second end of the tube, located in the bottom of the glass, the liquid completely flows out of it. You can stop the "waterfall" if you close the hole with your finger.
What do you think about the cup of greed invented by Pythagoras? And where else have you met the principle of the siphon?
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