Aryabhata (mathematician and astronomer)
In the classical age, He was one of the first Indian mathematicians and astronomers. He was born in 476 CE Kusumapura (Pataliputra) present-day Patna, India.
- Approximation of pi, 62832/20000 = 3.1416.
- He also believed that the planets and the Moon shine by reflected sunlight and that the motion of the stars is due to Earth’s rotation.
The mathematical Work of the aryabhata covers:
- plane trigonometry and
- spherical trigonometry.
- He knew that the earth is rotating on an axis around the sun and the moon rotated around it.
- He also discovered the position of nine planets and stated that these also revolved around the sun.
- He pointed out the eclipses, both lunar and solar.
- He stated, how many correct number of days in a year. i.e., 365 days.
In his honour, The Indian government named its first satellite 'Aryabhata' which was launched on 1975.