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Unformatted text preview: 42. Referring to problem 41, we note that the angular deviation of a diﬀracted ray (the angle between the
forward extrapolation of the incident ray and its diﬀracted ray) is ψ + θ. For m = 1, this becomes
ψ + θ = ψ + sin−1 λ
− sin ψ
d where the ratio λ/d = 0.40 using the values given in the problem statement. The graph of this is shown
below (with radians used along both axes). 0.9
0.8
0.7
angular_deviation
0.6
0.5
0.4
0 0.2 0.4 0.6 0.8
1
incident_angle 1.2 1.4 ...
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This note was uploaded on 11/12/2011 for the course PHYS 2001 taught by Professor Sprunger during the Fall '08 term at LSU.
 Fall '08
 SPRUNGER
 Physics

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