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In what year did J. J. Thomson announce the discovery of the electron? Answer with the four-digit year only.

Answer

1,897

1897 uint256

announcement year
The year of Thomson's public announcement of the particle later called the electron.
sources
www.rigb.org, centreforscientificarchives.co.uk, en.wikipedia.org, encyclopaedia britannica biography of j.j. thomson, encyclopaedia britannica, "j. j. thomson" - thomson announced his discovery of the electron in a lecture to the royal institution on 30 april 1897, encyclopaedia britannica, "j.j. thomson" (biography entry); commonly corroborated by thomson's 1897 paper 'cathode rays' in philosophical magazine, encyclopaedia britannica, "j.j. thomson" (britannica.com/biography/j-j-thomson) and the nobel prize biographical note on j.j. thomson (nobelprize.org), both stating thomson announced his discovery of the electron in 1897., encyclopaedia britannica, "j.j. thomson" (britannica.com/biography/j-j-thomson): states thomson announced his discovery of the electron in 1897; corroborated by aps news "this month in physics history: april 30, 1897: j.j. thomson announces the electron" (aps.org), encyclopaedia britannica, "j.j. thomson" (britannica.com/biography/j-j-thomson); nobel prize biography of j.j. thomson (nobelprize.org) — both state thomson announced the discovery of the electron in 1897, encyclopaedia britannica, "j.j. thomson" (https://www.britannica.com/biography/j-j-thomson) and wikipedia, "electron" (https://en.wikipedia.org/wiki/electron), both stating thomson announced the discovery of the electron in 1897., encyclopaedia britannica, "j.j. thomson" (https://www.britannica.com/biography/j-j-thomson): states thomson announced his discovery of the electron in 1897 following his royal institution lecture on 30 april 1897., encyclopaedia britannica, "j.j. thomson" biography entry, encyclopaedia britannica, "j.j. thomson" biography entry, and nobel prize official biography (nobelprize.org/prizes/physics/1906/thomson/biographical/), both stating thomson announced the discovery of the electron in 1897, encyclopaedia britannica, "j.j. thomson" biography entry, stating thomson announced the discovery of the electron in 1897 following his cathode ray tube experiments presented at the royal institution., encyclopaedia britannica, "j.j. thomson" biography entry: thomson announced his discovery of the electron in a lecture to the royal institution on 30 april 1897., encyclopaedia britannica, "j.j. thomson" biography entry: thomson announced his discovery of the electron on 30 april 1897, encyclopaedia britannica, "j.j. thomson" biography entry: thomson announced his discovery of the electron on 30 april 1897 in a lecture at the royal institution, london, subsequently published in philosophical magazine (1897), "cathode rays", encyclopaedia britannica, "j.j. thomson" biography entry; also corroborated by american institute of physics history of the electron discovery, encyclopaedia britannica, "j.j. thomson" biography; and thomson, j.j. (1897) "cathode rays", philosophical magazine 44, 293, encyclopaedia britannica, "j.j. thomson": thomson announced his discovery of the electron in a lecture at the royal institution on 30 april 1897, encyclopaedia britannica, "j.j. thomson": thomson announced his discovery of the electron on 30 april 1897 in a lecture at the royal institution, london., encyclopaedia britannica, 'j.j. thomson' (britannica.com/biography/j-j-thomson) — states thomson announced his discovery of the electron in 1897; nobelprize.org biographical note on j.j. thomson (nobelprize.org/prizes/physics/1906/thomson/biographical) — corroborates the 1897 announcement at the royal institution., encyclopaedia britannica, 'j.j. thomson' (britannica.com/biography/j-j-thomson): states thomson announced his discovery of the electron in 1897 following his cathode-ray tube experiments., encyclopaedia britannica, 'j.j. thomson' (britannica.com/biography/j-j-thomson): thomson announced his discovery of the electron in a lecture to the royal institution on 30 april 1897., encyclopaedia britannica, 'j.j. thomson' (britannica.com/biography/j-j-thomson); nobel prize official site, j.j. thomson biographical (nobelprize.org/prizes/physics/1906/thomson/biographical), encyclopaedia britannica, 'j.j. thomson' (https://www.britannica.com/biography/j-j-thomson) and wikipedia, 'electron' / 'j. j. thomson' (https://en.wikipedia.org/wiki/j._j._thomson), both stating thomson announced the discovery of the electron in 1897., encyclopaedia britannica, 'j.j. thomson' (https://www.britannica.com/biography/j-j-thomson): states thomson announced his discovery of the electron in a lecture at the royal institution on 30 april 1897., encyclopaedia britannica, 'j.j. thomson' biography entry, and the american institute of physics 'discovery of the electron' history; both state thomson announced the electron's discovery on 30 april 1897 in a lecture at the royal institution., encyclopaedia britannica, 'j.j. thomson' biography entry, and the royal institution's historical record of thomson's 30 april 1897 friday evening discourse announcing the discovery of the electron, encyclopaedia britannica, 'j.j. thomson' biography entry, and thomson's 1897 paper 'cathode rays' (philosophical magazine), both dating the announcement to 1897, encyclopaedia britannica, 'j.j. thomson' biography entry, stating thomson announced his discovery of the electron in 1897, encyclopaedia britannica, 'j.j. thomson' biography entry; nobel prize official biography of j.j. thomson (nobel prize in physics 1906), encyclopaedia britannica, 'j.j. thomson' biography entry; nobel prize official biography of j.j. thomson (nobelprize.org) — both state thomson announced the discovery of the electron in 1897., encyclopaedia britannica, 'j.j. thomson' biography, and the royal institution's historical record of thomson's 30 april 1897 discourse announcing the electron, encyclopaedia britannica, 'j.j. thomson' biography, and the royal institution's record of thomson's 30 april 1897 friday evening discourse announcing the electron, encyclopaedia britannica, 'j.j. thomson' biography, and thomson's 1897 paper 'cathode rays' (philosophical magazine, series 5, vol. 44), encyclopaedia britannica, 'j.j. thomson' biography: thomson announced his discovery of the electron in a lecture to the royal institution on 30 april 1897., encyclopaedia britannica, 'j.j. thomson' biography; and thomson, j.j. (1897), 'cathode rays', philosophical magazine, series 5, vol. 44, pp. 293-316 — both state the discovery was announced in 1897., encyclopaedia britannica, 'j.j. thomson' entry (britannica.com/biography/j-j-thomson), and thomson's own paper 'cathode rays', philosophical magazine, series 5, vol. 44 (1897), pp. 293-316, encyclopaedia britannica, 'j.j. thomson' entry: thomson announced his discovery of the electron on 30 april 1897 in a lecture at the royal institution, london, encyclopaedia britannica, 'j.j. thomson' entry; and thomson, j.j. (1897), 'cathode rays', philosophical magazine, describing the 30 april 1897 royal institution lecture announcing the discovery of the electron, encyclopaedia britannica, 'j.j. thomson' entry; and thomson, j.j. (1897), 'cathode rays', philosophical magazine, series 5, 44, 293, encyclopaedia britannica, 'j.j. thomson' entry; commonly cited date of his royal institution lecture announcing the electron is april 30, 1897, encyclopaedia britannica, 'j.j. thomson' entry; nobel prize official biography of j.j. thomson (1906 nobel lecture background), encyclopaedia britannica, 'j.j. thomson' entry; nobel prize official biography of j.j. thomson (1906 nobel prize in physics) — both state thomson announced the discovery of the electron in 1897., encyclopaedia britannica, 'j.j. thomson' entry; thomson, j.j. (1897), 'cathode rays', philosophical magazine, series 5, 44, 293-316, encyclopaedia britannica, 'j.j. thomson': thomson announced his discovery of the electron on 30 april 1897 in a lecture to the royal institution, published in philosophical magazine (1897), 'cathode rays', encyclopaedia britannica, entry on j. j. thomson: 'in 1897 thomson announced that cathode rays were negatively charged particles ... which he called corpuscles, later named electrons.', encyclopaedia britannica, entry on j. j. thomson: announced discovery of the electron in 1897, encyclopaedia britannica, entry on j. j. thomson: announced the discovery of the electron in 1897, encyclopedia britannica, 'j.j. thomson' entry: thomson announced his discovery of the electron in 1897, j. j. thomson, 'cathode rays', lecture delivered at the royal institution, london, 30 april 1897; widely cited (e.g. encyclopaedia britannica, american physical society) as the announcement of the discovery of the electron, j.j. thomson announced the discovery of the electron in a lecture at the royal institution on 30 april 1897, later published as 'cathode rays', philosophical magazine, 1897., j.j. thomson, 'cathode rays', philosophical magazine, series 5, vol. 44 (1897), pp. 293-316; royal institution lecture delivered 30 april 1897, nobelprize.org, j.j. thomson – biographical: https://www.nobelprize.org/prizes/physics/1906/thomson/biographical/ (states the discovery was announced on april 30, 1897)., royal institution, our history (https://www.rigb.org/about-us/our-history); subatomic science: jj thomson's discovery of the electron (https://www.rigb.org/explore-science/explore/blog/subatomic-science-jj-thomsons-discovery-electron), royal institution, our history — https://www.rigb.org/about-us/our-history, royal institution, ‘subatomic science: jj thomson's discovery of the electron’ (https://www.rigb.org/explore-science/explore/blog/subatomic-science-jj-thomsons-discovery-electron), www.aps.org, www.britannica.com, www.history.com, www.nobelprize.org, www.postgraduate.study.cam.ac.uk

Work

  1. pinnedblocks 26,087,414 to 26,087,713 to · on Ethereum mainnet
  2. answered216 of 216 agreed210 needed
    #191,897from www.rigb.org
    #12951,897Encyclopaedia Britannica, 'J.J. Thomson' biography entry, and the American Institute of Physics 'Discovery of the Electron' history; both state Thomson announced the electron's discovery on 30 April 1897 in a lecture at the Royal Institution.
    #1921,897J. J. Thomson, 'Cathode Rays', lecture delivered at the Royal Institution, London, 30 April 1897; widely cited (e.g. Encyclopaedia Britannica, American Physical Society) as the announcement of the discovery of the electron
    #8041,897from www.nobelprize.org
    #661,897Encyclopaedia Britannica, "J. J. Thomson" - Thomson announced his discovery of the electron in a lecture to the Royal Institution on 30 April 1897
    211 more
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