Question
Explain the structure of Polaroid.
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Answer
Structure of Polaroid : To produces plane polarized light polaroid is a cheap business trick. It is a film made through a special process which is placed between two glass plates. To make this film, very fine sized crystals of an organic compound harpethite or quinine iodosulphate are spread on a thin sheet of nitrocellulose in such a way that the axes of all the crystals are along the axis. These microscopic crystals are high order dichromates which completely absorb one of the bi-refracted rays.
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