THE HOLODECK® FOUNDATION

In 1905, Albert Einstein published a paper in which he proposed that many light-related phenomena—including black-body radiation and the photoelectric effect—would be better explained by modelling electromagnetic waves as consisting of spatially localized, discrete wave-packets. He called such a wave-packet the light quantum (German: das Lichtquant).  The name photon derives from the Greek word for light, φῶς (transliterated phôs).  Arthur Compton used photon in 1928, referring to G.N. Lewis, who coined the term in a letter to Nature on 18 December 1926.   In physics, a photon is usually denoted by the symbol γ (the Greek letter gamma).   In optical engineering, photons are usually symbolized by hν, which is the photon energy, where h is Planck constant and the Greek letter ν (nu) is the photon's frequency.
 
 
 

THE PHOTON & THE EYE

  
              
 
 

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Updated to March 31, 2022

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