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PH 223 23:1-3

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by

Richard Datwyler

on 30 September 2016

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Transcript of PH 223 23:1-3

It is 165 cm from your eyes to your toes. you're standing 200 cm from a tall mirror. How far is it from your eyes to the image of your toes?
3.0 m
5.0 m
angle = ?
mid pt.
What is the angle to hit the mid point of the wall, if it reflects of the top?
x = 433 cm
165 + 400 = x
2
2
2
A 1.0 cm thick layer of water stands on a horizontal slab of glass ( n = 1.33 1.50 respectively) A light ray in the air is incident on the water 60 degrees form the normal. What is the rays direction in the glass?
The glass core of an optical fiber has an index of refraction 1.60. The index of refraction of the cladding is 1.48. What is the maximum angle a light ray can make with the wall of the core if it is to remain inside the fiber?
n = 1.52
n = 1.54

blue
red
What is the angular spread?
"figure 23.15 and its explanation in the book was confusing could you explain it better than the book does?"
"Why do some lasers cut while others are harmless?"
"Can we go over the last question of the quiz, the index of refraction problem that relates to example 23.4 in the book?"
"So when we are born do we see things upside down?"
As in example 23.4 a laser light enters the vertical side of a 30-60-90 prism and the transmitted light leaves at an angle of 47.5 degrees to the normal, what is the index of refraction? (should look like '1.24' )
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