Particle Nature of Light

Physics

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Particle and wave nature of light

Dual nature of light:
  • Sometimes it behaves like a particle (called a photon), which explains how light travels in straight lines
  • Sometimes it behaves like a wave, which explains how light bends (or diffracts) around an object 
Light also shows interference properties, for example the formation of dark and bright fringes in Young's Double Slit experiment illustrates this fact. Light also exhibits polarization. Natural light coming from the sky is partially polarised but it can be made fully polarised by passing through a polaroid.

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