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AnnieMoo
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Homework Statement
The lines in a grating are uniformly spaced at 1530 nm. Calculate the angular separation of the second order bright fringes between light of wavelength 600 nm and 603.11 nm. Answer in __mrad
Homework Equations
Theta = sin-1 ((m*lambda*2)/(d))
The Attempt at a Solution
d = 1530 nm
m = 2
lambda1 = 600 nm
lambda2 = 603.11
Theta1 = sin-1 ((2*600)/(1530))
= 51.66
Theta2 = sin-1 ((2*603.11)/(1530))
= 52.03
Theta2 - Theta1 = (52.03)-(51.66) = 0.37
The answer is apparently wrong. Please help! I would really appreciate it. Thanks!