Aryabhatta

• 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.