Polarization
is a property applying to transverse waves that specifies the
geometrical orientation of the oscillations in which it is a property
of wave that can oscillate with more than one orientation. In a
transverse wave, the direction of the oscillations is perpendicular
to the direction of motion or propagation of the wave. A light wave
that is vibrating in more than one plane is referred to as
unpolarized light. The process of transforming an unpolarized light
into a polarized light by transmitting through a Polaroid filter is
known as polarization if light. This occurs because the speed of
light gets changed when it passes through inside a crystal and hence
the angle at which the light is refracted get varies with the
direction of polarization. On considering an unpolarized light having
a mixture of two different polarization can get separated by two
components by the crystal. When unpolarized light is transmitted
through a Polaroid filter, it emerges as polarized light with
one-half of the original intensity along with vibrations in a single
plane. This is because the electromagnetic vibrations that are in a
direction parallel to the alignment of the molecules are absorbed.
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