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## Did you know?

### Archimedes screw

Archimedes screw was a simple mechanical device invented by Archimedes in the 3rd century B.C(282-212 BC). Archimedes was the first scientist to utilize the power of lever. The great Archimedes told once 'Give me a place to stand and rest my lever on, and I can move the Earth'. It was used for thousand of years especially for irrigation purpose. He used this simple mechanical device to lift the water from the lower level.

King Hieron asked Archimedes to build a ship to show the majesty and luxury of their home town, Syracuse. So Archimedes build a huge ship that carried 600 passengers at a time. Initially he used this device in ship, for removing bilge water from the hold of the ship. Its also used to drain excess water from ship.

Archimedes screw had a long life span of 40 years due to its simple construction. Archimedes made this device out of wooden material. Later the screw was replaced of metal. The device was normally covered with the box to prevent splash out of water or waste of material.

Archimedes screw consist of screw fitted inside the cylindrical tube, opened at both the ends. The lower end of the device was fixed under the water. The screw was turned by manual labour or through wind mill. When the shaft was rotated, it scoops up the lower level of water into the irrigation ditches.

It was one of the oldest machine used still date. It was used for handling light materials such as Grain, sand and ashes. It was also used for land reclamation and drainage in the damp regions of Netherlands. The same mechanism is still used in escalators and lifting fishes from one place to other location. Thus it highly reduces the manual burden.

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Daily Maths Topic Today - archimedes screw.