Subrahmanyan Chandrashekhar (S C)
https://www.britannica.com/biography/Subrahmanyan-Chandrasekhar
This summary is divided into four parts.
Part One - Life in Lahore:
S C was born in born in Lahore on 19th October 1910. His father was working in the North-Western Railways. His mother was an intelligent woman. She translated Henrik Ibsen’s play ‘Dolls House’ into Tamil in those days. She had big dreams for her children. S C didn’t receive formal education or schooling. His parents taught him, and he had private tuitions till the age of 12. S C was the nephew of C V Raman, the Nobel Laureate who discovered the Raman Effect.
Part Two - Life in Madras:
Arrived in Chennai in the year - 1918.
1922 - 1925 - Hindu High School - Triplicane. (Trivia - Kamal Hassan studied in the same school)
1925 - 1930 - Presidency College Madras - (B. Sc Science - Honours)
He was awarded Government of India Scholarship to study at Cambridge University
Part Three - Life in England:
Studied Astronomy and Physics
Worked with two leading astrophysicists - Edward Milne and Sir Arthur Eddington
1933 - Completed PhD and was selected for a fellowship of Trinity College.
He was interested in Astrophysics
Special interest in Sir Arthur Eddington and Ralph Flower studies on stellar evolution or cycle of stars.
S C found some errors in the theories of Sir Arthur Eddington’s book - ‘The Internal Constitution of Stars’. Stars also die and they become like Earth-sized objects. This last phase in the life of a star is known as ‘white dwarf’. Eddington in his books said that all stars become white dwarfs. S C said only stars of modest or low masses will become white dwarfs. Not the big ones. He calculated and said that stars with greater than 1.44 times the mass of our own Sun will be white dwarfs. This limit which was calculated by S C is known as Chandrashekhar’s Limit. The high mass stars will eventually become black holes and they have powerful gravitational pull.
S C’s theories were criticized by Sir Arthur Eddington. S C left Trinity and he moved to the USA.
Part Four - Life in the USA:
He emigrated to the US and came out with his theory of black holes.
In 1936, he married Lalitha Doraiswamy.
In 1937, he joined as a Research Associate at York Observatory - University of Chicago.
He published ten books on Astrophysics. Some of the books are - Introduction to the Study of Stellar Structure, Principles of Stellar Dynamics, The Mathematical Theory of Black Holes.
S C and his wife became victims of racism in America. Both became citizens of the US in 1953.
He couldn’t find intellectual stimulation in India to advance his career in Astrophysics.
He was the Editor of the Astrophysics Journal for 19 years.
He guided over 50 students to their PhD.
Two of the students - Lee and Yang won the Nobel Prize in Physics in 1957.
S C won the Nobel Prize in Physics in 1983.
He died on 21st August 1995.