Question

What is polarizing angle? Give two uses of a Polaroid.

Answer 1

the angleat which unpolarized light or other electromagnetic radiation must be incident upon a nonmetallic surface for the reflected radiation to acquire maximum plane polarization — called also Brewsterangle; compare brewster's law.


Uses of Polaroid

Polaroids are used in the laboratory to produce and analyse plane polarised light.

Polaroids are widely used as polarising sun glasses.

They are used to eliminate the head light glare in motor cars.

They are used to improve colour contrasts in old oil paintings.