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Unformatted text preview: plot(t,d); xlabel('entrance angle [rad]'); ylabel('total deviation angle [rad]') %check [a,b]=min(d) 2*t(b)pi/3 a = 0.67943 b = 3134 ans = 0.67940 π /3 θ θ i θ 0 δ θθ i π/3θ π/3θ i So minimum deviation is ~0.6794 rad. 7. 37 Just redo the above w/ ng=1.525 and 1.535 and take the difference: 0.70260.6872=0.0154 rad (~0.9 deg) 8. Prove that to someone looking straight down into a swimming pool, any object in the water will appear to be 3/4 of its true depth. (HINT: n water =4/3) a a w w n n θ sin sin = 2 2 2 2 x a x x d x n w + = + d a θ a x θ w 2 x a + d For infinitesimal x, 4 / 3 1 = = w n d a 9. Light is incident in air perpendicularly on a sheet of crown glass having an index of refraction of 1.552. Determine both the reflectance and the transmittance. 2 += t i t i n n n n R =0.043 ( ) 2 4 t i t i n n n n T + = =0.957...
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 Spring '11
 ENO
 Physics, Snell's Law, Total internal reflection, Fresnel equations

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