This preview shows page 1. Sign up to view the full content.
Unformatted text preview: 34. After passing through the ﬁrst polarizer the initial intensity I0 reduces by a factor of 1/2. After passing
through the second one it is further reduced by a factor of cos2 (π − θ1 − θ2 ) = cos2 (θ1 + θ2 ). Finally,
after passing through the third one it is again reduced by a factor of cos2 (π − θ2 − θ3 ) = cos2 (θ2 + θ3 ).
cos2 (θ1 + θ2 ) cos2 (θ2 + θ3 )
cos2 (50◦ + 50◦ ) cos2 (50◦ + 50◦ ) = 4.5 × 10−4 .
View Full Document
- Fall '08