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Question
Calculate dispersive power of a transparent material given : nv = 1.56, nr = 1.54, ny = 1.55.
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Solution
W = `("n"_"v" - "n"_"r")/(("n"_"y" - 1))`
`= (1.56 - 1.54)/((1.55 - 1))`
`= 0.02/0.55 = 2/55 = 0.036`
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