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Sir Joseph John Thomson OM FRS [1] (18 December 1856 – 30 August 1940) was a British physicist and Nobel Laureate in Physics, credited with the discovery of the electron, the first subatomic particle to be found.
- George Paget Thomson, Joan Paget Thomson
- Trinity College, Cambridge
Apr 11, 2024 · J.J. Thomson, English physicist who helped revolutionize the knowledge of atomic structure by his discovery of the electron (1897). He received the Nobel Prize for Physics in 1906 and was knighted two years later. Learn more about his life, career, and legacy.
- George Paget Thomson
Apr 2, 2014 · J.J. Thomson was a Nobel Prize-winning physicist whose research led to the discovery of electrons. Updated: May 26, 2021. Photo: Universal History Archive/Getty Images. (1856-1940) Who Was...
about SCIENTIFIC BIOGRAPHIES. 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 area being investigated by many scientists at the time.
Feb 2, 2020 · J.J. Thomson is credited with the discovery of the electron, the negatively charged particle in the atom. He is known for the Thomson atomic theory. Many scientists studied the electric discharge of a cathode ray tube. It was Thomson's interpretation that was important. He took the deflection of the rays by the magnets and charged plates as ...
- Anne Marie Helmenstine, Ph.D.
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Lived 1856 – 1940. J. J. Thomson took science to new heights with his 1897 discovery of the electron – the first subatomic particle. He also found the first evidence that stable elements can exist as isotopes and invented one of the most powerful tools in analytical chemistry – the mass spectrometer. Advertisements.
Thomson's claim to be the discoverer of the electron rests on two key observations. First, he found that the value of e/m was of the order of 1000 times larger than its value for the lightest particle then known, which was the hydrogen ion in electrolysis.
