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Aug 26, 2024 · J.J. Thomson (born December 18, 1856, Cheetham Hill, near Manchester, England—died August 30, 1940, Cambridge, Cambridgeshire) was an 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 in 1908.
- George Paget Thomson
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.
The Nobel Prize in Physics 1906 was awarded to Joseph John Thomson "in recognition of the great merits of his theoretical and experimental investigations on the conduction of electricity by gases"
- Discovery of the Electron – The first subatomic particle. In 1834, Michael Faraday coined the word ion to describe charged particles which were attracted to positively or negatively charged electrodes.
- The Atom as a Plum Pudding. Based on his results, Thomson produced his famous (but incorrect) plum pudding model of the atom. He pictured the atom as a uniformly positively charged ‘pudding’ within which the plums (electrons) orbited.
- Invention of the Mass Spectrometer. In discovering the electron, Thomson also moved towards the invention of an immensely important new tool for chemical analysis – the mass spectrometer.
- Every Hydrogen Atom has only one Electron. In 1907, Thomson established using a variety of methods that every atom of hydrogen has only one electron.
Apr 2, 2014 · Research. In 1894, Thomson began studying cathode rays, which are glowing beams of light that follow an electrical discharge in a high-vacuum tube. It was a popular research topic among physicists...
Jun 30, 2024 · Sir Joseph John Thomson 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.
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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.
