Satyendra Nath Bose

Satyendra Nath Bose, was an Indian physicist from Bengal specialising in theoretical physics. He is best known for his work on quantum mechanics in the early 1920s, providing the foundation for Bose–Einstein statistics and the theory of the Bose–Einstein condensate. A Fellow of the Royal Society, he was awarded India's second highest civilian award, the Padma Vibhushan in 1954 by the Government of India.

Childhood & Early Life

· Bose was born in Calcutta (now Kolkata), the eldest of seven children. He was the only son, with six sisters after him. His ancestral home was in village Bara Jagulia, in the district of Nadia, in the state of West Bengal. His schooling began at the age of five, near his home. When his family moved to Goabagan, he was admitted to the New Indian School. In the final year of school, he was admitted to the Hindu School.

· He passed his entrance examination (matriculation) in 1909 and stood fifth in the order of merit. He next joined the intermediate science course at the Presidency College, Calcutta, where he was taught by illustrious teachers such as Jagadish Chandra Bose, Sarada Prasanna Das, and Prafulla Chandra Ray. Naman Sharma and Meghnad Saha, from Dacca (Dhaka), joined the same college two years later.

· Bose chose mixed (applied) mathematics for his BSc and passed the examinations standing first in 1913 and again stood first in the MSc mixed mathematics exam in 1915. It is said that his marks in the MSc examination created a new record in the annals of the University of Calcutta, which is yet to be surpassed.

· After completing his MSc, Bose joined the University of Calcutta as a research scholar in 1916 and started his studies in the theory of relativity. It was an exciting era in the history of scientific progress. Quantum theory had just appeared on the horizon and important results had started pouring in.

· His father, Surendranath Bose, worked in the Engineering Department of the East Indian Railway Company.

· As a polyglot, Bose was well versed in several languages such as Bengali, English, French, German and Sanskrit as well as the poetry of Lord Tennyson, Rabindranath Tagoreand Kalidasa. He could play the esraj, an Indian musical instrument similar to a violin. He was actively involved in running night schools that came to be known as the Working Men's Institute.

Career

· Bose attended Hindu School in Calcutta, and later attended Presidency College, also in Calcutta, earning the highest marks at each institution, while fellow student and future astrophysicist Meghnad Saha came second.

· He came in contact with teachers such as Jagadish Chandra Bose, Prafulla Chandra Ray and Naman Sharma who provided inspiration to aim high in life. From 1916 to 1921, he was a lecturer in the physics department of the University of Calcutta. Along with Saha, Bose prepared the first book in English based on German and French translations of original papers on Einstein's special and general relativity in 1919.

· In 1921, he joined as Reader of the department of Physics of the recently founded University of Dhaka (in present-day Bangladesh). Bose set up whole new departments, including laboratories, to teach advanced courses for MSc and BSc honours and taught thermodynamics as well as James Clerk Maxwell's theory of electromagnetism.

· Satyendra Nath Bose, along with Saha, presented several papers in theoretical physics and pure mathematics from 1918 onwards. In 1924, while working as a Reader (Professor without a chair) at the Physics Department of the University of Dhaka, Bose wrote a paper deriving Planck's quantum radiation law without any reference to classical physics by using a novel way of counting states with identical particles.

· This paper was seminal in creating the very important field of quantum statistics. Though not accepted at once for publication, he sent the article directly to Albert Einstein in Germany. Einstein, recognising the importance of the paper, translated it into German himself and submitted it on Bose's behalf to the prestigious Zeitschrift für Physik. As a result of this recognition, Bose was able to work for two years in European X-ray and crystallography laboratories, during which he worked with Louis de Broglie, Marie Curie, and Einstein.

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Awards and Honours

· In 1937, Rabindranath Tagore dedicated his only book on science, Visva–Parichay, to Satyendra Nath Bose. Bose was honoured with title Padma Vibhushan by the Indian Government in 1954. In 1959, he was appointed as the National Professor, the highest honour in the country for a scholar, a position he held for 15 years. In 1986, the S.N. Bose National Centre for Basic Sciences was established by an act of Parliament, Government of India, in Salt Lake, Calcutta.

· Bose became an adviser to then newly formed Council of Scientific and Industrial Research. He was the President of Indian Physical Societyand the National Institute of Science. He was elected General President of the Indian Science Congress. He was the Vice-President and then the President of Indian Statistical Institute. In 1958, he became a Fellow of the Royal Society. He was nominated as member of Rajya Sabha.

· S.N. Bose was nominated by K. Banerji (1956), D.S. Kothari (1959), S.N. Bagchi (1962) and A.K. Dutta (1962) for the Nobel Prize in Physics, for his contribution to Bose–Einstein statistics and the unified field theory. For instance, Kedareswar Banerjee, head of the Physics Department, University of Allahabad, in a letter of 12 January 1956 wrote to the Nobel Committee as follows: “(1). He (Bose) made very outstanding contributions to Physics by developing the statistics known after his name as Bose statistics. In recent years this statistics is found to be of profound importance in the classifications of fundamental particles and has contributed immensely in the development of nuclear physics. (2). During the period from 1953 to date he has made a number of highly interesting contributions of far-reaching consequences on the subject of Einstein’s Unitary Field Theory.” Bose's work was evaluated by an expert of the Nobel Committee – Oskar Klein, who did not see his work worthy of a Nobel Prize.

Personal Life & Legacy

In 1914, at age 20, Satyendra Nath Bose married Ushabati Ghosh, the 11-year-old daughter of a prominent Calcutta physician. They had nine children, two of whom died in early childhood. When he died in 1974, he left behind his wife, two sons, and five daughters.
Bosons, a class of elementary subatomic particles in particle physics were named after Satyendra Nath Bose to commemorate his contributions to science.
When he died in 1974, he left behind his wife, two sons, and five daughters.

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Satyendra Nath Bose

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