experiment to find the the deviation produced by a equilateral prism
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Allow a ray of light to to enter through a small hole of a window of an darkened room . no place an equilateral prism in the path of light . the light emerging out should be falled on a screen . now you can found that the white screen has a band of seven colors (VIBGYOR) but they are arranged in ROYGBIV .
THIS WAS FIRST DONE BY ISAAC NEWTON.
THIS WAS FIRST DONE BY ISAAC NEWTON.
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