7 янв 2000 г. до нашей эры - Shaduf was invented

Описание:

Shaduf was a hand operated system of lifting water. People in Egypt and India still use it today.The shaduf is made of a horizontal beam. It has a bucket or skin on one end to hold the water in it and a counterpart a little heavier on the other end. It is set up like a see saw.

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