Pythagoras cup, Fair cup, Museum Copy, engraved in hand, depicts God Poseidon, stoneware, pottery

Pythagoras cup, Pythagorean cup of justice or Fair cup, Greedy Cup, Tantalus cup.
Museum Copy, Ancient Greek Classical Period 485 BC engraved in hand, internally glazed, depicts Greek Roman God Poseidon, Neptune.

"God of the Sea"
Poseidon was the god of the sea, earthquakes, storms, and horses and is considered one of the most bad-tempered, moody and greedy Olympian gods. He was known to be vengeful when insulted.
He is the son of Cronus and Rhea. After the gods defeated the Titans, the world was divided into three and Zeus, Hades and Poseidon drew straws to decide which they would rule. Zeus drew the skies, Hades the underworld, and Poseidon the seas.

A Pythagoras cup (also known as a Pythagorean cup, a Greedy Cup or a Tantalus cup) is a form of drinking cup which forces its user to imbibe only in moderation. Credited to Pythagoras of Samos, it allows the user to fill the cup with wine up to a certain level. If the user fills the cup only up to that level he may enjoy his drink in peace. If he exhibits gluttony, however, the cup spills its contents out the bottom (the intention being: onto the lap of the immodest drinker).

A Pythagorean cup looks like a normal drinking cup, except that the bowl has a central column in it, giving it a shape like a Bundt pan. The central column of the bowl is positioned directly over the stem of the cup and over the hole at the bottom of the stem. A small open pipe runs from this hole almost to the top of the central column, where there is an open chamber. The chamber is connected by a second pipe to the bottom of the central column, where a hole in the column exposes the pipe to (the contents of) the bowl of the cup.

When the cup is filled, liquid rises through the second pipe up to the chamber at the top of the central column, following Pascal's principle of communicating vessels. As long as the level of the liquid does not rise beyond the level of the chamber, the cup functions as normal. If the level rises further, however, the liquid spills through the chamber into the first pipe and out the bottom. Gravity then creates a siphon through the central column, causing the entire contents of the cup to be emptied through the hole at the bottom of the stem.

A unique handmade cup for you!
Also, it is an amazing gift for your friends, relatives or colleagues.

Details:
- Ceramic
- Lead-Free

Approximate dimensions
- Height: 11cm - 4.4 inches
- Width: 9cm - 3.6 inches
- Weight: 300g

- CAUTION: No Microwave, No Dishwasher - It's best to clean with a dry cloth

Because they are handmade, each is unique, so there may be small differences between them.
All mugs are bubble wrapped and boxed for safe delivery.

Shipping Info:
All items will be dispatched within 1-3 days.

Please provide correct shipping address – We are not responsible for shipper error.

Shipping Service and Delivery Times:
- Shipping by registered mail for international and domestic orders.
- Shipping service is carried through Greek post office.
- Shipping by Airmail.
- Average shipping time to Europe is from 5-10 days, rest of the world from 15-30 days.