snowman
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i need help on number 4.  11/7/2005 11:52:10 PM
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snowman
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The light beam in Figure P22.43 strikes surface 2 at the critical angle,(theta) c = 42°. Determine the angle of incidence,(theta) i.
 11/8/2005 12:05:34 AM |
snowman
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help me 11/8/2005 1:47:41 AM |
darkone
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Use Snell's law plus the critical angle formula.
 11/8/2005 2:28:56 AM |
snowman
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i've been using those two equations but my answers are not working.
(n2/n1)(sin 90) = 42°
(n2/n1) = .743
n2 = 1 n1 = 1.346
1.346sin(theta)1 = 1sin(18°)
theta1 = 24.58°
but that is wwong...what am i doing wrong? 11/8/2005 11:25:33 AM |
snowman
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nm...googled that shit and found a problem just like it that was solved
thank YOU google. 11/8/2005 11:47:26 AM |
