ch33-p094 - 94. We apply Eq. 33-40 (once) and Eq. 33-42...

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Unformatted text preview: 94. We apply Eq. 33-40 (once) and Eq. 33-42 (twice) to obtain I= 1 I 0 cos 2 θ1' cos 2 θ 2' 2 where θ1' = (90° − θ1 ) + θ 2 = 110° is the relative angle between the first and the second polarizing sheets, and θ 2' = 90° − θ 2 = 50° is the relative angle between the second and the third polarizing sheets. Thus, we have I/I0 = 0.024. ...
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