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Amal Kumar Raychaudhuri was born on 14 September, 1923 in Barisal, East Bengal, British India (now Bangladesh), is a Bengali physicist (1923–2005). Discover Amal Kumar Raychaudhuri's Biography, Age, Height, Physical Stats, Dating/Affairs, Family and career updates. Learn How rich is he in this year and how he spends money? Also learn how he earned most of networth at the age of 81 years old?

Popular As N/A
Occupation N/A
Age 81 years old
Zodiac Sign Virgo
Born 14 September 1923
Birthday 14 September
Birthplace Barisal, East Bengal, British India (now Bangladesh)
Date of death 18 June, 2005
Died Place N/A
Nationality India

We recommend you to check the complete list of Famous People born on 14 September. He is a member of famous with the age 81 years old group.

Amal Kumar Raychaudhuri Height, Weight & Measurements

At 81 years old, Amal Kumar Raychaudhuri height not available right now. We will update Amal Kumar Raychaudhuri's Height, weight, Body Measurements, Eye Color, Hair Color, Shoe & Dress size soon as possible.

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Who Is Amal Kumar Raychaudhuri's Wife?

His wife is Nomita Sen

Family
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Wife Nomita Sen
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Children 4

Amal Kumar Raychaudhuri Net Worth

His net worth has been growing significantly in 2023-2024. So, how much is Amal Kumar Raychaudhuri worth at the age of 81 years old? Amal Kumar Raychaudhuri’s income source is mostly from being a successful . He is from India. We have estimated Amal Kumar Raychaudhuri's net worth, money, salary, income, and assets.

Net Worth in 2024 $1 Million - $5 Million
Salary in 2024 Under Review
Net Worth in 2023 Pending
Salary in 2023 Under Review
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Timeline

1923

Amal Kumar Raychaudhuri (14 September 1923 – 18 June 2005) was an Indian physicist, known for his research in general relativity and cosmology.

His most significant contribution is the eponymous Raychaudhuri equation, which demonstrates that singularities arise inevitably in general relativity and is a key ingredient in the proofs of the Penrose–Hawking singularity theorems.

Raychaudhuri was also revered as a teacher during his tenure at Presidency College, Kolkata.

Raychaudhuri was born in a Baidya family coming from Barisal (now in Bangladesh) on 14 September 1923, to Surabala and Sureshchandra Raychaudhuri.

He was just a child when the family migrated to Kolkata.

He had his early education in Tirthapati Institution and later completed matriculation from Hindu School, Kolkata.

1942

from the Presidency College in 1942 and M.Sc.

1944

in 1944 from Science College campus of Calcutta University and he joined Indian Association for the Cultivation of Science (IACS) in 1945 as a research scholar.

1952

In 1952, he took a research job with the Indian Association for the Cultivation of Science (IACS), but to his frustration was required to work on the properties of metals rather than general relativity.

Despite these adverse pressures, he was able to derive and publish the equation which is now named for him a few years later.

Raychaudhuri equation is a key ingredient in the proofs of the Penrose–Hawking singularity theorems.

1955

Some years later, having learned that his 1955 paper was highly regarded by notable physicists, such as Pascual Jordan, Raychaudhuri was sufficiently emboldened to submit a doctoral dissertation, and received his Doctor of Science degree at the University of Calcutta (with one of the examiners, Prof John Archibald Wheeler recording special appreciation of the work done) in 1959.

1960

The Raychaudhuri equation hit the zenith of fame as it was a key tool in the hands of young relativists like Stephen Hawking and Roger Penrose in the middle of the late 1960s in their attempt to answer the question on the existence of space-time singularities and to explain the theory of universe.

In fact, this equation is important as a fundamental lemma for the Penrose-Hawking singularity theorems.

There is such wide acceptability of this equation like other notable equations in physics like ‘the Dirac equation and Schroedinger equation’ that nobody cares about its origin or date of publication.

The Raychaudhuri equation paved the way for later research into the singularity problem.

It would find its place in venerable textbooks on general relativity and relativistic cosmology.

The equation will stand firm so long Einstein’s GTR stands.

The equation remains a prime tool to investigate the behaviour of black hole horizons.

One would wonder if there is any research work of such grade to have emerged in post-independent India.

1961

In 1961, Raychaudhuri joined the faculty of his alma mater, Presidency College then affiliated with the University of Calcutta, and remained there until his superannuation.

1965

The first mention of the term ‘Raychaudhuri Equation’ appeared in a research paper published in 1965 by George F.R. Ellis and Stephen Hawking.

1970

He became a well-known scientific figure in the 1970s, and was the subject of a short documentary film completed shortly before his death.

2005

In a documentary film made just before his death in 2005, AKR reveals that he was extremely passionate about mathematics right from his schooldays and solving problems would give him immense pleasure.

He recalls in the documentary how his grade 9th teacher credited him for discovering a simpler solution for a mathematics problem.

May be the fact that his father was a mathematics teacher in a school also inspired him.

At the same time, as his father was not so 'successful' so to say, he was discouraged to take up mathematics, his first choice, as honours subject in college.

He earned B.Sc.

2018

Dipayan Pal wrote of Raychaudhuri for Science Reporter (CSIR, NISCAIR) in 2018: In general relativity, the Raychaudhuri equation plays a significant role to explain the space-time singularities and gravitational focusing properties in cosmology.

He aimed to address the fundamental question of singularity in the most simple and general form with no reference to any symmetry and any specific property of space-time and energy distribution.