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Problem 2
For wavelengths in the visible spectrum, the index of refraction of a cer-
tain type of crown glass can be approximated by the relation n(A) = 1.5255 +
(4825 nm²)/x?.
a. Find the index of refraction of this glass for 400 nm light, 500 nm light,
and 700 nm light.
b. Find the phase velocity, in this glass, for a pulse with frequency com-
ponents centered around 500 nm.

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