A thin film of index nflm 1.40 coats a thick glass plate of index n, 'glass 1.50. g The film is supposed to minimize reflection by interference from normally incident light (0incident = 0°) with wavelength A= 600nm. What is the minimum thickness, t, that the film can be made?

A thin film of index nflm 1.40 coats a thick glass plate of index n, 'glass 1.50. g The film is supposed to minimize reflection by interference from normally incident light (0incident = 0°) with wavelength A= 600nm. What is the minimum thickness, t, that the film can be made?

College Physics

11th Edition

ISBN:9781305952300

Author:Raymond A. Serway, Chris Vuille

Publisher:Raymond A. Serway, Chris Vuille

Chapter1: Units, Trigonometry. And Vectors

Section: Chapter Questions

Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...

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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.

Question

A thin film of index nfilm
1.40 coats a thick glass plate of index n,
= 1.50.
glass
The film is supposed to minimize reflection by interference from normally incident light
(eincident = 0°) with wavelength 2 = 600nm. What is the minimum thickness, t, that the
film can be made?

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