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eflective coating from a material with index of refraction 1.73 to put on top of glass with an index of refraction 1.4

University Physics Volume 3

17th Edition

ISBN:9781938168185

Author:William Moebs, Jeff Sanny

Publisher:William Moebs, Jeff Sanny

Chapter3: Interference

Section: Chapter Questions

Problem 47P: To save money on making military aircraft invisible to radar, an inventor decides to coat them with...

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Concept explainers

Dispersion of White Light

Snell’s law is a formula that gives a relation between the angle of incidence and angle of refraction and is given as:

Question

You wish to make an anti-reflective coating from a material with index of refraction 1.73 to put on top of glass with an index of refraction 1.4. What is the minimum thickness of the coating that will produce destructive interference for light of wavelength 420.0 nm? Answer in units of nm.

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You wish to make an anti-reflective coating from a material with index of refraction 1.61 to put on top of glass with an index of refraction 1.31. What is the minimum thickness of the coating that will produce destructive interference for light of wavelength 609.0 nm? Answer in units of nm.
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