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Encyclopedia > Corpuscular theory of light

According to the Corpuscular theory of light, set forward by Sir Isaac Newton, light is made up of small discrete particles called "corpuscles" (little particles). In its contemporary incarnation, the theory of Photons, this idea explains many properties of light, in particular the photoelectric effect. However, it fails to explain other effects, such as interference and diffraction. It was therefore superseded by the wave theory of light, later understood as part of electromagnetism, and eventually supplanted by modern quantum mechanics. Sir Isaac Newton in Knellers portrait of 1689. ... The word light is defined here as electromagnetic radiation of any wavelength; thus, X-rays, gamma rays, ultraviolet light, microwaves, radio waves, and visible light are all forms of light. ... The photoelectric effect is the emission of electrons from matter upon the absorption of electromagnetic radiation, such as ultraviolet radiation or x-rays. ... Interference of two circular waves - Wavelength (decreasing bottom to top) and Wave centers distance (increasing to the right). ... To meet Wikipedias quality standards, this article or section may require cleanup. ... A wave is a disturbance that propagates through space or spacetime, often transferring energy. ... Electromagnetism is the physics of the electromagnetic field; a field encompassing all of space which exerts a force on particles that possess the property of electric charge, and is in turn affected by the presence and motion of those particles. ... Fig. ...


See also

  • Corpuscularianism

 
 

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