The modern concept of the photon was developed gradually by Albert Einstein in the early 20th century to explain experimental observations that did not fit the classical wave model of light. The benefit of the photon model was that it accounted for the frequency dependence of light's energy, and explained the ability of matter and electromagnetic radiation to be in thermal equilibrium. The photon model accounted for anomalous observations, including the properties of black-body radiation, that others (notably Max Planck) had tried to explain using semiclassical models. In that model, light was described by Maxwell's equations, but material objects emitted and absorbed light in quantized amounts (i.e., they change energy only by certain particular discrete amounts). Although these semiclassical models contributed to the development of quantum mechanics, many further experiments[3][4] beginning with the phenomenon of Compton scattering of single photons by electrons, validated Einstein's hypothesis that light itself is quantized.[5][6] In 1926 the optical physicist Frithiof Wolfers and the chemist Gilbert N. Lewis coined the name photon for these particles.[7] After Arthur H. Compton won the Nobel Prize in 1927 for his scattering studies,[8] most scientists accepted that light quanta have an independent existence, and the term photon was accepted.
Die Liebe ist die Lösung aller Probleme. Die Liebe ist der Schlüssel zu allen Türen der menschlichen Seele. Die Liebe ist die Kraft aller schöpferischen Kräfte in der Natur. Die Liebe ist eine Wissenschaft, die man noch nicht genügend erforscht hat. Derjenige, der weiß und lieben kann, der ist mächtig. (Omraam Mikhael Aivanhov)
2017-07-31
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The modern concept of the photon was developed gradually by Albert Einstein in the early 20th century to explain experimental observations that did not fit the classical wave model of light. The benefit of the photon model was that it accounted for the frequency dependence of light's energy, and explained the ability of matter and electromagnetic radiation to be in thermal equilibrium. The photon model accounted for anomalous observations, including the properties of black-body radiation, that others (notably Max Planck) had tried to explain using semiclassical models. In that model, light was described by Maxwell's equations, but material objects emitted and absorbed light in quantized amounts (i.e., they change energy only by certain particular discrete amounts). Although these semiclassical models contributed to the development of quantum mechanics, many further experiments[3][4] beginning with the phenomenon of Compton scattering of single photons by electrons, validated Einstein's hypothesis that light itself is quantized.[5][6] In 1926 the optical physicist Frithiof Wolfers and the chemist Gilbert N. Lewis coined the name photon for these particles.[7] After Arthur H. Compton won the Nobel Prize in 1927 for his scattering studies,[8] most scientists accepted that light quanta have an independent existence, and the term photon was accepted.
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