A soap film (n = 1.33) is 375 nm thick and coats a flat piece of glass (n = 1.52). Thus, air is on one side of the film and glass is on the other side, as the figure illustrates. Sunlight, whose wavelengths (in vacuum) extend from 380 to 750 nm, travels through air and strikes the film nearly perpendicularly. For what wavelength in the range of 380 to 750 nm does constructive interference cause the film to look bright in reflected light?

A soap film (n = 1.33) is 375 nm thick and coats a flat piece of glass (n = 1.52). Thus, air is on one side of the film and glass is on the other side, as the figure illustrates. Sunlight, whose wavelengths (in vacuum) extend from 380 to 750 nm, travels through air and strikes the film nearly perpendicularly. For what wavelength in the range of 380 to 750 nm does constructive interference cause the film to look bright in reflected light?

Principles of Physics: A Calculus-Based Text

5th Edition

ISBN:9781133104261

Author:Raymond A. Serway, John W. Jewett

Publisher:Raymond A. Serway, John W. Jewett

Chapter27: Wave Optics

Section: Chapter Questions

Problem 23P: A beam of 580-nm light passes through two closely spaced glass plates at close to normal incidence...

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