- Aryabhatta (476-550?), born in Pataliputra (modern Patna, India).
- In mathematics he solved the quadratic equation and discovered, or perhaps rediscovered, the formula for the area of an isosceles triangle.
- His
*Aryabhatiya*, a series of astronomical and mathematical rules and propositions, written in Sanskrit verse. - India invented the Number System. Zero was invented by Aryabhatta. The place value system, the decimal system was developed in India in 100 BC.
- Aryabhata also figured the value of PI accurately to eight places, thus coming closer to its value than any other mathematician of ancient times.
- Aryabhatta also propounded the Heliocentric theory of gravitation, thus predating Copernicus by almost one thousand years.
- Aryabhatta was the first to explain spherical shape, size ,diameter, rotation and correct speed of Earth in 499 AD.
- Aryabhata held that the earth rotates on its axis, and he gave the correct explanation of eclipses of the sun and the moon.
- He was known to the Arabs as Arjehir, and his writings had considerable influence on Arabic science.
- In astronomy, he proposed that Earth orbited the sun and correctly explained eclipses of the Sun and Moon.
*ISRO*First Indian Satellite, Aryabhata, launched on April 19, 1975.

## Wednesday, July 9, 2008

### Aryabhatta

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