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25.4 Total Internal Reflection
Past the critical angle nothing gets out, which traps light inside fiber optic cables, corner reflectors, and cut diamonds.
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2 exercises
25.4 Exercise 8
An optical fiber uses flint glass clad with crown glass. What is the critical angle?
2.5
25.4 Exercise 10
Suppose you are using total internal reflection to make an efficient corner reflector. If there is air outside and the incident angle is , what must be the minimum index of refraction of the material from which the reflector is made?
2.5
Adapted from College Physics © 2022 Rice University. Licensed under CC BY 4.0. Sources: College Physics 2e, College Physics for AP® Courses 2e. Imported at revision f98d7a7.