Suppose you have a lens system that is to be used primarily for 680 nm red light. Calculate the second thinnest coating of fluorite (magnesium fluoride) that would be non-reflective for this wavelength. The index of refraction for the coating is 1.38.

Suppose you have a lens system that is to be used primarily for 680 nm red light. Calculate the second thinnest coating of fluorite (magnesium fluoride) that would be non-reflective for this wavelength. The index of refraction for the coating is 1.38.

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

Interference of Light

The word "constructive" signifies addition in interference. Constructive interference occurs when the path of the waves that start from the slit differs by 1 entire wavelength or in the intervals of the same. Hence, the waves that are presented on the screen are in phase (crest to crest/trough to trough). The waves interfering constructively forms bright fringes on the screen.

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Suppose you have a lens system that is to be used primarily for 680 nm red light. Calculate the second thinnest coating of fluorite (magnesium fluoride) that would be non-reflective for this wavelength. The index of refraction for the coating is 1.38.

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