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J. J. 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.
- 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.
Feb 25, 2020 · The J.J. Thomson contribution to science helped revolutionize the understanding of atomic structure. He contributed extensively to the field of physics and chemistry by discovering the existence of electrons, developing the mass spectrometer and determining the presence of isotopes.
Aug 2, 2017 · Joseph Thomson helped to open up to Western knowledge the last corner of Africa that was still shown on the maps as Terra Incognita. Source: “Joseph Thomson: African explorer” (1896) His great journey.
Joseph John Thomson (1856-1940) spent his professional life at England's Cambridge University, where he passed in four years from prizewinning student (he was ranked second "wrangler" in the prestigious "mathematical tripos" examination in 1880) to head professor at the Cavendish Laboratory—a position previously held by James Clerk Maxwell (1831...
Apr 30, 2020 · On April 30, 1897, English physicist Joseph John Thomson gave the first experimental proof of the electron, which had been already theoretically predicted by Johnstone Stoney. Thomson was awarded the 1906 Nobel Prize in Physics for the discovery of the electron and for his work on the conduction of electricity in gases.
JJ Thomson was an English physicist who is credited with discovery of the electron in 1897. Thompson was born in December 1856 in Manchester, England and was educated at the University of Manchester and then the University of Cambridge, graduating with a degree in mathematics.
