Who was JJ Thompson and what did he discover?

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Sir Joseph John "J.J." Thomson

lived 1856-1940
Nobel Laureate
discovered electron and isotopes
invented mass spectrometer

Responsible for the experiment with a pumped-out glass bulb, in which an electric circuit is completed by electrons emitted from a hot wire, is credited to the US inventor Thomas Alva Edison (1847-1931), who patented it in 1883. The phenomenon is known as the "Edison effect" and many electronic devices use it nowadays.

Experiments with beams of negative particles were performed in Britain by Joseph John ("J.J.") Thomson, and led to his conclusion in 1897 that they consisted of lightweight particles with a negative electric charge, nowadays known as electrons. Thomson was awarded the 1906 Nobel Prize.

JJ Thompson is a Famous Inventor. JJ Contributed to the Atomic Theroy.

j.j. thomson was born: december 18, 1865 and died August 30, 1940. He discovered the electron.

First answer by ID1126524670. Last edit by Nirel. Contributor trust: 380 [recommend contributor]. Question popularity: 2 [recommend question]

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