WHY IT IS NECESSARY TWO USE TWO INDENTICAL AND INVERTED PRISM FOR RECOMBINATION OF THE SPECTRUM
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It us necessary to use two identical and inverted prism for recombination of the spectrum
according to sir issac newton each color has a definite wavelength and for each wavelength the angle of devition differs red is the least deviated and violet is the most deviated color so different color deviate at different angles to form spectrum and to recombine it we need another prism so the coming ligth by refrection
according to sir issac newton each color has a definite wavelength and for each wavelength the angle of devition differs red is the least deviated and violet is the most deviated color so different color deviate at different angles to form spectrum and to recombine it we need another prism so the coming ligth by refrection
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