James Jeans

British mathematician and astronomer (1877 – 1946)

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Lived 1877–1946, aged 69United Kingdom

United Kingdom AcademicsAcademic

Wikipedia
46 languages
Cross-language footprint
Era
1877–1946
Aged 69
Awards
11
recognised works

Summary

Updated 2026-06-09

A physicist who moved from pure mathematics into the cosmos and ended up shaping how the public understood the universe — while holding some of the highest chairs in British science between the wars.

Biography

About

James Hopwood Jeans was born in England on 11 September 1877, trained in physics and mathematics, and carved out a career that straddled theory and observation. He served as secretary of the Royal Society for a decade starting in 1919, then took the presidency of the Royal Astronomical Society from 1925 to 1927, a tenure that earned him the society's Gold Medal. His work in astronomy and his ability to translate the technical into the legible made him a bridge figure in early twentieth-century science. He died on 16 September 1946, five days after his sixty-ninth birthday.

Voice

In their own words

Sourced, dated quotes from James Jeans

James Jeans

said1938

Life exists in the universe only because the carbon atom possesses certain exceptional properties.

— p. 19, Pelican Books 1938 reprint of 1931 2nd ed.

James Jeans

said1938

Everything that has been said, and every conclusion that has been tentatively put forward, is quite frankly speculative and uncertain.

— The closing sentences of the book, on p. 188 of Pelican Books 1938 reprint of 1931 2nd ed.

James Jeans

said1937

And the substance out of which this bubble is blown, the soap-film, is empty space welded onto empty time.

— p. 100, 1937 ed.

James Jeans

said1937

the universe can be best pictured, ... as consisting of pure thought, the thought of what, for want of a wider word, we must describe as a mathematical thinker.

— pp. 169-170, 1937 ed.

James Jeans

said1930

For, for aught we know, or for aught that the new science can say to the contrary, the gods which play the part of fate to the atoms of our brains may be our own minds.

— p. 29-30 of 1930 ed.

via Wikiquote · CC BY-SA

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