Kamalendu Deb Krori (born 21 January 1930) is an

Indian Indian or Indians may refer to: Associated with India * of or related to India ** Indian people ** Indian diaspora ** Languages of India ** Indian English, a dialect of the English language ** Indian cuisine Associated with indigenous peoples o ...

theoretical physicist and the former Principal of

Cotton College Cotton College was a Roman Catholic boarding school in Cotton, Staffordshire, United Kingdom. It was also known as ''Saint Wilfrid's College''. The school buildings were centred on Cotton Hall, a country house used by religious communities fr ...

. He pioneered research on

general relativity General relativity, also known as the general theory of relativity, and as Einstein's theory of gravity, is the differential geometry, geometric theory of gravitation published by Albert Einstein in 1915 and is the current description of grav ...

in the North Eastern region of

India India, officially the Republic of India, is a country in South Asia. It is the List of countries and dependencies by area, seventh-largest country by area; the List of countries by population (United Nations), most populous country since ...

and guided 16 scholars for their Ph.D. degrees. He has co-authored almost 150 peer-reviewed research papers in International Journals. He is known for the ''“Krori-Barua Solution”'' a general relativistic solution for a singularity free charged fluid sphere (1975); the pertinent paper has more than 150 citations. In 1982, Krori along with two students showed why the elusive fundamental particles neutrinos, originally believed to be mass-less like the

photons A photon () is an elementary particle that is a quantum of the electromagnetic field, including electromagnetic radiation such as light and radio waves, and the force carrier for the electromagnetic force. Photons are massless particles that ...

, must possess some finite rest mass in order to be consistent with Einstein's general theory of relativity. In 1998, the Japanese

Super-Kamiokande Super-Kamiokande (abbreviation of Super-Kamioka Neutrino Detection Experiment, also abbreviated to Super-K or SK; ) is a neutrino detector, neutrino observatory located Kamioka Observatory, under Mount Ikeno near the city of Hida, Gifu, Hida, ...

experiment confirmed that neutrinos indeed possess tiny masses by confirming existence of neutrino oscillations by which neutrinos change their flavours during their long cosmic journeys.

Education and career

Krori received a BSc degree from

Karimganj College Karimganj College, established in 1946, is one of the oldest undergraduate, coeducational college situated in Karimganj, Assam and is affiliated with the Assam University. Departments The college has total 19 departments and centres covering s ...

and

M.Sc A Master of Science (; abbreviated MS, M.S., MSc, M.Sc., SM, S.M., ScM or Sc.M.) is a master's degree. In contrast to the Master of Arts degree, the Master of Science degree is typically granted for studies in sciences, engineering and medicine ...

from

Calcutta University The University of Calcutta, informally known as Calcutta University (), is a Public university, public State university (India), state university located in Kolkata, Calcutta (Kolkata), West Bengal, India. It has 151 affiliated undergraduate c ...

in 1953. Krori joined

and then

as a lecturer. He became a professor at St. Anthony's College, Shillong. After holding many teaching positions, he earned Ph.D. degree by virtue of independent research in

theoretical physics Theoretical physics is a branch of physics that employs mathematical models and abstractions of physical objects and systems to rationalize, explain, and predict List of natural phenomena, natural phenomena. This is in contrast to experimental p ...

from

Jadavpur University Jadavpur University ( abbr. JU) is a public state funded research university with its main campus located at Jadavpur, Kolkata, West Bengal, India. It was established on 25 July in 1906 as ''Bengal Technical Institute'' and was converted into ...

Kolkata Kolkata, also known as Calcutta ( its official name until 2001), is the capital and largest city of the Indian state of West Bengal. It lies on the eastern bank of the Hooghly River, west of the border with Bangladesh. It is the primary ...

, in 1971. He joined

Cotton College, Guwahati Cotton University also known as CU, is a public state university (India), state university located in Guwahati, Assam, India. It was established in 2017 by the provisions of an Act from the Assam Legislative Assembly which merged Cotton Colleg ...

, in north-east India, as a lecturer in physics. There he started research on the general theory of relativity. Later he became a full professor and headed the Department of Physics. He became the Principal of the institute in 1987 and retired in 1991.

Honours and recognition

Krori has received awards including: *Dr. H. C. Bhuyan award in Physical Sciences by Assam Science Society in 1990. *Emeritus Fellowship by University Grants Commission, in Physics (1991-1993). *National Teacher Award in 2010 from K.C. Das Commerce College. * Vaidya Roychoudhury Award, 2020. *Academic Physics Prize 2021. *Member,

New York Academy of Sciences The New York Academy of Sciences (NYAS), originally founded as the Lyceum of Natural History in January 1817, is a nonprofit professional society based in New York City, with more than 20,000 members from 100 countries. It is the fourth-oldes ...

, New York (USA). *Asom Sourav, 2nd highest civilian award of

Assam Assam (, , ) is a state in Northeast India, northeastern India, south of the eastern Himalayas along the Brahmaputra Valley, Brahmaputra and Barak River valleys. Assam covers an area of . It is the second largest state in Northeast India, nor ...

, 2021

Selected publications

Books

* K.D. Krori (2010) "Fundamentals of SPECIAL and GENERAL RELATIVITY," in: *K.D. Krori (2012) "Principles of Non - Relativistic and Relativistic Quantum Mechanics," in: *K.D. Krori (2012) "Advanced Heat and Thermodynamics," in:

References

{{DEFAULTSORT:Krori, Kamalendu Deb 1930 births Living people Indian theoretical physicists 20th-century Indian physicists University of Calcutta alumni Jadavpur University alumni Academic staff of Cotton University