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Unformatted text preview: 34. The angular location of the mth order diﬀraction maximum is given by mλ = d sin θ. To be able to
observe the ﬁfth-order maximum, we must let sin θ|m=5 = 5λ/d < 1, or
= 635 nm .
5 Therefore, all wavelengths shorter than 635 nm can be used. ...
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- Fall '08