Prakaas (Light) ek rakam ke energy hae. Ii ek rakam ke electromagnetic radiation hae, jon ki uu wavelength me hae jiske insaan ke aankhi se deka jaae sake hae.[1] Physics me, light sabd ke matlab, koi bhi wavelength ke electromagnetic radiation hae, chaahe iii dekhae nai to, nai dekhae.[2][3] Light, chhota chhota packets, jiske photons bola jaawe hae, me rahe hae. Iske properties duuno wave aur particles ke rakam rahe hae. Light ke parhai ke optics bola jaawe hae.

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ReferencesBadlo

  1. International Commission on Illumination 1987. International Lighting Vocabulary. Number 17.4. CIE, 4th edition. ISBN 978-3-900734-07-7.
    By the International Lighting Vocabulary, the definition of light is: “Any radiation capable of causing a visual sensation directly.”
  2. Gregory Hallock Smith (2006), Camera lenses: from box camera to digital, SPIE Press, p. 4, ISBN 9780819460936
  3. Narinder Kumar (2008), Comprehensive Physics XII, Laxmi Publications, p. 1416, ISBN 9788170085928

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