Polarization

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Polarization

  1. 1. 
  2. 2. Light waves are not longitudinal but are transverse slit Source of light The wave emerge according the direction of slit
  3. 3. Polarization of light Ordinary Unpolarised light Tourmaline Crystal Po lar ize d li ghtIn an ordinary light the vibrations of the electric vectoroccur in all possible direction in the plane perpendicularto the direction of wave. The wave emerge from thecrystal which are parallel to its axis.This phenomenon is called ‘Polarization of light’
  4. 4. Two plane-Polarized waves of equal amplitude and at rightangles to each other are moving in the z direction. They differin phase by 900; where one has maximum values, the other iszero. X Z Y
  5. 5. Brewster’s Law Polarization of Light by Reflection Normal t Un gh p ola d Li ri sed ip ip ar ize l Lig Po Air ht Glass rFor a particular angle of incidence, the reflected light iscompletely plane-polarized with vibrations perpendicularto the plane of incidence. The angle of incidence is calledthe ‘Angle of Polarization’ ip. µ = tan ip (Brewster’s Law)
  6. 6. Brewster’s Law Polarization of Light by Reflection Normal t Un gh p ola d Li ri sed ip ip ar ize l Lig Po Air ht Glass rFor a particular angle of incidence, the reflected light iscompletely plane-polarized with vibrations perpendicularto the plane of incidence. The angle of incidence is calledthe ‘Angle of Polarization’ ip. µ = tan ip (Brewster’s Law)

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