Thomas George Cowling FRS (17 June 1906 – 16 June 1990) was an

English English usually refers to: * English language * English people English may also refer to: Peoples, culture, and language * ''English'', an adjective for something of, from, or related to England ** English national ide ...

astronomer An astronomer is a scientist in the field of astronomy who focuses their studies on a specific question or field outside the scope of Earth. They observe astronomical objects such as stars, planets, natural satellite, moons, comets and galaxy, g ...

Early life and education

Cowling was born in

Hackney, London Hackney is a district in East London, England, forming around two-thirds of the area of the modern London Borough of Hackney, to which it gives its name. It is 4 miles (6.4 km) northeast of Charing Cross and includes part of the Queen E ...

, the second of four sons of George Cowling and Edith Eliza Cowling (nee Nicholls). He was educated at

Sir George Monoux Grammar School ''Sir'' is a formal honorific address in English for men, derived from Sire in the High Middle Ages. Both are derived from the old French "Sieur" (Lord), brought to England by the French-speaking Normans, and which now exist in French only as ...

Walthamstow Walthamstow ( or ) is a large town in East London, east London, England, within the Ceremonial counties of England, ceremonial county of Greater London and the Historic counties of England, ancient county of Essex. Situated northeast of Chari ...

and read

mathematics Mathematics is an area of knowledge that includes the topics of numbers, formulas and related structures, shapes and the spaces in which they are contained, and quantities and their changes. These topics are represented in modern mathematics ...

Brasenose College, Oxford Brasenose College (BNC) is one of the constituent colleges of the University of Oxford in the United Kingdom. It began as Brasenose Hall in the 13th century, before being founded as a college in 1509. The library and chapel were added in the mi ...

from 1924 to 1930. From 1928 to 1930 he worked under Edward Arthur Milne. In 1929, Milne had no problems left to ask his student to work on and appealed to Sydney Chapman, who proposed that they work on an article on which he was working that dealt with the Sun's

magnetic field A magnetic field is a vector field that describes the magnetic influence on moving electric charges, electric currents, and magnetic materials. A moving charge in a magnetic field experiences a force perpendicular to its own velocity and to ...

. Cowling found an error in the paper that invalidated Chapman's results. After Cowling's doctorate, Chapman proposed that they work together.

Academic career

In 1933 Cowling wrote an article, ''The magnetic field of sunspots''.

Joseph Larmor Sir Joseph Larmor (11 July 1857 – 19 May 1942) was an Irish and British physicist and mathematician who made breakthroughs in the understanding of electricity, dynamics, thermodynamics, and the electron theory of matter. His most influent ...

had worked in this area, arguing that sunspots regenerate themselves through a dynamo effect. Cowling showed that Larmor's proposed explanation was incorrect. His article assured him of a good reputation in the field of

astrophysics Astrophysics is a science that employs the methods and principles of physics and chemistry in the study of astronomical objects and phenomena. As one of the founders of the discipline said, Astrophysics "seeks to ascertain the nature of the h ...

. During the 1930s, Cowling also worked on stellar structure involving radiation and convection, at the same time as Ludwig Biermann but independently of him. He constructed a model of star with a convective core and radiative envelope, named the Cowling model by

Chandrasekhar Chandrasekhar, Chandrashekhar or Chandra Shekhar is an Indian name and may refer to a number of individuals. The name comes from the name of an incarnation of the Hindu god Shiva. In this form he married the goddess Parvati. Etymologically, the nam ...

. He also studied

s within stars and classified the modes of non-radial oscillation of the body of a star, the basis of the field of

helioseismology Helioseismology, a term coined by Douglas Gough, is the study of the structure and dynamics of the Sun through its oscillations. These are principally caused by sound waves that are continuously driven and damped by convection near the Sun's surfa ...

. Cowling became an Assistant

Lecturer Lecturer is an List of academic ranks, academic rank within many universities, though the meaning of the term varies somewhat from country to country. It generally denotes an academic expert who is hired to teach on a full- or part-time basis. T ...

at the University College of Swansea (now Swansea University) in 1933. He was subsequently a Lecturer at the University of Dundee (1937–38) and at the

University of Manchester , mottoeng = Knowledge, Wisdom, Humanity , established = 2004 – University of Manchester Predecessor institutions: 1956 – UMIST (as university college; university 1994) 1904 – Victoria University of Manchester 1880 – Victoria Univer ...

(1938–45) before being appointed

Professor Professor (commonly abbreviated as Prof.) is an Academy, academic rank at university, universities and other post-secondary education and research institutions in most countries. Literally, ''professor'' derives from Latin as a "person who pr ...

Mathematics Mathematics is an area of knowledge that includes the topics of numbers, formulas and related structures, shapes and the spaces in which they are contained, and quantities and their changes. These topics are represented in modern mathematics ...

at the University College of North Wales (now Bangor University). In 1948 Cowling was appointed Professor of

Applied Mathematics Applied mathematics is the application of mathematical methods by different fields such as physics, engineering, medicine, biology, finance, business, computer science, and industry. Thus, applied mathematics is a combination of mathematical s ...

at the

University of Leeds , mottoeng = And knowledge will be increased , established = 1831 – Leeds School of Medicine1874 – Yorkshire College of Science1884 - Yorkshire College1887 – affiliated to the federal Victoria University1904 – University of Leeds , ...

in succession to Professor

Selig Brodetsky Selig Brodetsky, זליג ברודצק (10 February 1888 – 18 May 1954) was a Russian-born English mathematician, a member of the World Zionist Executive, the president of the Board of Deputies of British Jews, and the second president of the ...

. Cowling retired from his chair at Leeds in 1970 with the title

Emeritus ''Emeritus'' (; female: ''emerita'') is an adjective used to designate a retired chair, professor, pastor, bishop, pope, director, president, prime minister, rabbi, emperor, or other person who has been "permitted to retain as an honorary title ...

Professor.

Honours

Cowling was elected a

Fellow of the Royal Society Fellowship of the Royal Society (FRS, ForMemRS and HonFRS) is an award granted by the judges of the Royal Society of London to individuals who have made a "substantial contribution to the improvement of natural science, natural knowledge, incl ...

(FRS) in March 1947. He won the Gold Medal of the Royal Astronomical Society in 1956 and the Bruce Medal of the Astronomical Society of the Pacific in 1985. He was elected president of the

Royal Astronomical Society (Whatever shines should be observed) , predecessor = , successor = , formation = , founder = , extinction = , merger = , merged = , type = NGO ...

from 1965 to 1967. He was also awarded the

Hughes Medal The Hughes Medal is awarded by the Royal Society of London "in recognition of an original discovery in the physical sciences, particularly electricity and magnetism or their applications". Named after David E. Hughes, the medal is awarded with ...

two days before his death.

Marriage and children

Cowling married Doris Marjorie Moffatt in 1935. They had a son and two daughters.

Death

Cowling died in

Leeds Leeds () is a city and the administrative centre of the City of Leeds district in West Yorkshire, England. It is built around the River Aire and is in the eastern foothills of the Pennines. It is also the third-largest settlement (by populati ...

on 16 June 1990, one day before his 84th birthday. He was survived by his wife and children. St Andrews University, biography
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References

External links

Oral History interview transcript with Thomas Cowling on 22 March 1978, American Institute of Physics, Niels Bohr Library & Archives
*

Obituary

{{DEFAULTSORT:Cowling, Thomas George 1906 births 1990 deaths 20th-century British astronomers Recipients of the Gold Medal of the Royal Astronomical Society Fellows of the Royal Society People educated at Sir George Monoux College Alumni of Brasenose College, Oxford Academics of Swansea University Academics of the University of Dundee Academics of the University of Manchester Academics of Bangor University Academics of the University of Leeds Presidents of the Royal Astronomical Society