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Page 120
P. 120
Let’s Answer
1. Who was the first person who studied human anatomy?
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2. What were the concepts given by charak?
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Science Wizards
Aryabhatta
Aryabhatta was a great mathematician and astronomer of the ancient India.
He lived between 476-520 A.D. Aryabhatta was the first man
who found out the motion of the earth. He completed his
studies at the University of Nalanda.
Aryabhatiya and Surya-Siddhanta were his two great
scientific work. In Aryabhatiya, he has declared the place
value of numbers from 1 to 9 and the use of 0 (Zero). He
worked in spherical geometry, arithmetic, algebra and plane
trigonometry. Aryabhatta gave formulae for the area of a
triangle and a circle. He gave the value of pi (p) as 3.1416. Aryabhatta
In his second work, Surya Siddhanta, he has described the motion of the earth.
He clearly explained that the earth revolves around the sun. He has also thrown
light on solar calender in which the year has been divided into 12 months. He
knew that the solar and lunar eclipses occur due to the shadows cast by the earth
and the moon.
The first satellite of India, the Aryabhatta, has been named after him.
Sir Chandrashekhar Venkat Raman
C.V. Raman was born on November 7, 1888 in Thiruvanaikkaval, Tamil Nadu. He
was very intelligent and bright student. He obtained master degree in physics
from Presidency College, Madras in 1907.
In 1917, he became the professor of physics in the
University of Kolkata. He was appointed as the head of
physics department in the Indian Institute of Science,
Bengaluru. In 1921, Raman represented the university of
Kolkata at the British Universities conference at oxford to
deliver a lecture before the Royal society of London. In 1924,
he was elected fellow of the Royal Society, London.
C.V. Raman Book-5 # 120

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