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photon

From Wiktionary, the free dictionary

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See also: Photon

English

English Wikipedia has an article on:
Wikipedia

Etymology

From photo- + -on. Coined by American physicist Leonard Troland in 1916 as a unit of light hitting the retina, and later popularized in a more modern sense by Gilbert N. Lewis, with the term gaining acceptance in the physics community by the late 1920s.

Pronunciation

  • IPA(key): /ˈfəʊtɒn/
  • Audio (Southern England):(file)
  • Rhymes: -əʊtɒn

Noun

photon (plural photons)

  1. (particle physics) The quantum of light and other electromagnetic energy, regarded as a discrete particle having zero rest mass, no electric charge, and an indefinitely long lifetime. It is a gauge boson.
    • 2013 July-August, Fenella Saunders, “Tiny Lenses See the Big Picture”, in American Scientist:
      The single-imaging optic of the mammalian eye offers some distinct visual advantages. Such lenses can take in photons from a wide range of angles, increasing light sensitivity. They also have high spatial resolution, resolving incoming images in minute detail.

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French

French Wikipedia has an article on:
Wikipedia fr

Pronunciation

Noun

photon m (plural photons)

  1. (particle physics) photon

Further reading

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