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Oct 9, 2024 · 1997 marked the centenary of the discovery of the electron by Professor J.J. Thomson (Cavendish Professor 1884-1919). Still
Oct 8, 2024 · Atom - Electrons, Protons, Neutrons: During the 1880s and ’90s scientists searched cathode rays for the carrier of the electrical properties in matter. Their work culminated in the discovery by English physicist J.J. Thomson of the electron in 1897.
1 day ago · J. J. Thomson himself didn't study alpha particle scattering, but he did study beta particle scattering. In his 1910 paper "On the Scattering of rapidly moving Electrified Particles", Thomson presented equations that modelled how beta particles scatter in a collision with an atom.
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Oct 8, 2024 · Atom - Nuclear Model, Rutherford, Particles: Rutherford overturned Thomson’s model in 1911 with his famous gold-foil experiment, in which he demonstrated that the atom has a tiny, massive nucleus.
2 days ago · In 1897, the British physicist J. J. Thomson, with his colleagues John S. Townsend and H. A. Wilson, performed experiments indicating that cathode rays really were unique particles, rather than waves, atoms or molecules as was believed earlier. [5] By 1899 he showed that their charge-to-mass ratio, e/m, was independent of cathode material. He ...
2 days ago · He met J. J. Thomson of the Cavendish Laboratory and Trinity College, Cambridge. He attended lectures on electromagnetism given by James Jeans and Joseph Larmor, and did some research on cathode rays, but failed to impress Thomson.
Oct 8, 2024 · J.J. Thomson’s discovery of the negatively charged electron had raised theoretical problems for physicists as early as 1897, because atoms as a whole are electrically neutral. Where was the neutralizing positive charge and what held it in place?
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