A grain of sand is directly below center of the base of a cube of transparent material.
Question:
A grain of sand is directly below center of the base of a cube of transparent material. The grain of sand is visible when viewed through the top surface but cannot be seen when looking into any of the sides of the cube. What is the minimum index of refraction of the material of which the cube is made?
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Consider a ray from the sand at glancing incidence on the bottom ...View the full answer
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Related Book For 
Fundamentals of Ethics for Scientists and Engineers
ISBN: 978-0195134889
1st Edition
Authors: Edmund G. Seebauer, Robert L. Barry
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