pho|ton

pho|ton
pho|ton «FOH ton», noun.
a unit particle of light, an element of radiant energy, according to the quantum theory; a light quantum. It has a momentum equal to its energy divided by the velocity of light, and moves as a unit with the velocity of light. It is considered to be one of the elementary particles. »

[Einstein] said that light, in spite of its wave nature, must be composed of energy particles, or photons (Harvey E. White). When you see different colors your eyes are being hit streams of photons which differ in their rates of vibration (Ralph E. Lapp).

[< photo- + -on]

Useful english dictionary. 2012.

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Look at other dictionaries:

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  • pho·ton — /ˈfoʊˌtɑːn/ noun, pl tons [count] physics : a tiny particle of light or electromagnetic radiation …   Useful english dictionary

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  • pho|to|ton|ic — «FOH toh TON ihk», adjective. exhibiting phototonus in the normal way; sensitive to light …   Useful english dictionary

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