Mention any three applications of polaroids..??.....
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Polaroids are used in sunglasses to cut off the glare reflected by horizontal surfaces. Polaroids are used in glass windows of an airplane to control the intensity of light entering the airplane. Polaroid glasses are used to view three-dimensional pictures and movies.
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Glass windows in trains and planes are made of polaroid to control the concentration of light. In plane one polaroid is settled exterior the window and the other one is settled interior so that it can be turned. The concentration of the light is balanced by the internal polaroid.
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