Science · 1856–1940

Joseph John Thomson — Age, Birthday & Biography

Born: 18 December 1856 · Died: 30 August 1940 · Age: 83

English physicist who discovered the electron in 1897 and won the Nobel Prize in Physics

Did you know?His son, George Paget Thomson, also won a Nobel Prize for demonstrating that electrons behave like waves.

Quick facts

  • Date of birth18 December 1856
  • Date of death30 August 1940
  • Age at death83
  • NationalityBritish
  • BirthplaceCheetham Hill, United Kingdom
  • Occupationphysicist, mathematician, university teacher

Editor's Take:

J. J. Thomson discovered the electron. Working at the Cavendish Laboratory in Cambridge, he studied cathode rays. In 1897 he showed they were made of tiny charged particles, far smaller than atoms. This was the first subatomic particle ever found. He proposed the "plum pudding" model of the atom. He won the Nobel Prize in 1906. Seven of his students and assistants also won Nobel Prizes.

Key Milestones

  1. 1884: Cavendish – professor
  2. 1897: Electron – discovered
  3. 1904: Plum pudding – atom model
  4. 1906: Nobel Prize in Physics

Sir Joseph John Thomson (18 December 1856 – 30 August 1940) was a British physicist.

Text from Wikipedia, licensed under CC BY-SA 4.0

Profile

J. J. Thomson: Discoverer of the Electron

English physicist, 1856–1940

J. J. Thomson was born in Cheetham Hill, Manchester, on 18 December 1856.

He led the Cavendish Laboratory from 1884.

He discovered the electron in 1897.

He received the Nobel Prize in Physics in 1906.

Career highlights

  1. 1884Cavendish: professor
  2. 1897Electron: discovered
  3. 1904Plum pudding: atom model
  4. 1906Nobel Prize: in Physics
  5. 1918Trinity: Master

Did you know?His son George won the Nobel Prize for showing electrons also behave like waves.

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Age at death
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When is Joseph John Thomson's birthday?
Joseph John Thomson's birthday is December 18. He was born on December 18, 1856 in Cheetham Hill, United Kingdom.
How old was Joseph John Thomson when he died?
Joseph John Thomson died on August 30, 1940, aged 83.
Who shares a birthday with Joseph John Thomson?
Famous people who share Joseph John Thomson's December 18 birthday include Joseph Stalin, Steven Spielberg, Brad Pitt, Christina Aguilera and Billie Eilish.

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Reviewed by the Who Shares My Birthday editorial team.

Last reviewed: October 2026