Question

Calculate dispersive power of a transparent material given : n_v = 1.56, n_r = 1.54, n_y = 1.55. 

Answer 1

W = `("n"_"v" - "n"_"r")/(("n"_"y" - 1))`

`= (1.56 - 1.54)/((1.55 - 1))`

`= 0.02/0.55 = 2/55 = 0.036`