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  2. Electron - Wikipedia

    en.wikipedia.org/wiki/Electron

    A 1906 proposal to change to electrion failed because Hendrik Lorentz preferred to keep electron. [25] [26] The word electron is a combination of the words electric and ion. [27] The suffix -on which is now used to designate other subatomic particles, such as a proton or neutron, is in turn derived from electron. [28] [29]

  3. J. J. Thomson - Wikipedia

    en.wikipedia.org/wiki/J._J._Thomson

    Thomson made the discovery around the same time that Walter Kaufmann and Emil Wiechert discovered the correct mass to charge ratio of these cathode rays (electrons). [35] The name "electron" was adopted for these particles by the scientific community, mainly due to the advocation by George Francis FitzGerald, Joseph Larmor, and Hendrik Lorentz.

  4. History of chemistry - Wikipedia

    en.wikipedia.org/wiki/History_of_chemistry

    In 1897, J. J. Thomson discovered the electron using the cathode-ray tube. In 1898, Wilhelm Wien demonstrated that canal rays (streams of positive ions) can be deflected by magnetic fields and that the amount of deflection is proportional to the mass-to-charge ratio. This discovery would lead to the analytical technique known as mass ...

  5. Timeline of particle discoveries - Wikipedia

    en.wikipedia.org/wiki/Timeline_of_particle...

    1932 Antielectron (or positron), the first antiparticle, discovered by Carl D. Anderson [13] (proposed by Paul Dirac in 1927 and by Ettore Majorana in 1928) : 1937 Muon (or mu lepton) discovered by Seth Neddermeyer, Carl D. Anderson, J.C. Street, and E.C. Stevenson, using cloud chamber measurements of cosmic rays [14] (it was mistaken for the pion until 1947 [15])

  6. History of subatomic physics - Wikipedia

    en.wikipedia.org/wiki/History_of_subatomic_physics

    It also revealed that physical objects do not change their parameters, such as total energy, position and momentum, as continuous functions of time, as it was thought of in classical physics: see atomic electron transition for example. Another crucial discovery was identical particles or, more generally, quantum particle statistics. It was ...

  7. History of electromagnetic theory - Wikipedia

    en.wikipedia.org/wiki/History_of_electromagnetic...

    The discovery of electromagnetic waves in space led to the development of radio in the closing years of the 19th century. The electron as a unit of charge in electrochemistry was posited by G. Johnstone Stoney in 1874, who also coined the term electron in 1894. [135]

  8. Humans' impact on the earth began a new epoch in the 1950s ...

    www.aol.com/news/scientists-now-epoch-anthropoc...

    Called the Anthropocene — and derived from the Greek terms for “human” and “new” — this epoch started sometime between 1950 and 1954, according to the scientists.

  9. History of atomic theory - Wikipedia

    en.wikipedia.org/wiki/History_of_atomic_theory

    Chadwick called this new particle "the neutron" and believed that it to be a proton and electron fused together because the neutron had about the same mass as a proton and an electron's mass is negligible by comparison. [81] Neutrons are not in fact a fusion of a proton and an electron.