How did Sir Joseph John Thomson discover the electron?

The British physicist Joseph John (J. J.) Thomson (1856–1940) performed a series of experiments in 1897 designed to study the nature of electric discharge in a high-vacuum cathode-ray tube, an ... In 1897 Thomson discovered the electron and then went on to propose a model for the structure of the atom. read more

J. J. Thomson. Sir Joseph John Thomson OM PRS[1] (/ˈtɒmsən/; 18 December 1856 – 30 August 1940) was an English physicist and Nobel laureate in physics, credited with the discovery and identification of the electron; and with the discovery of the first subatomic particle. read more

Sir Joseph John Thomson, a British physicist, discovered the electron in 1897. In experiments studying electric discharge in cathode tubes, he noted a high value for the ratio of charge to mass. His observation led him to identify the first subatomic particle, the electron. read more

Sir J.J. Thomson, in full Sir Joseph John Thomson (born December 18, 1856, Cheetham Hill, near Manchester, England—died August 30, 1940, Cambridge, Cambridgeshire), English physicist who helped revolutionize the knowledge of atomic structure by his discovery of the electron (1897). read more