Bundle: Principles of Physics: A Calculus-Based Text, 5th + WebAssign Printed Access Card for Serway/Jewett's Principles of Physics: A Calculus-Based Text, 5th Edition, Multi-Term

5th Edition

ISBN: 9781133422013

Author: Raymond A. Serway; John W. Jewett

Publisher: Cengage Learning

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Textbook Question

Chapter 27, Problem 68P

Iridescent peacock feathers are shown in Figure P27.68a (page 938). The surface of one microscopic barbule is composed of transparent keratin that supports rods of dark brown melanin in a regular lattice, represented in Figure P27.68b. (Your fingernails are made of keratin, and melanin is the dark pigment giving color to human skin.) In a portion of the feather that can appear turquoise (blue-green), assume the melanin rods are uniformly separated by 0.25 μm, with air between them. (a) Explain how this structure can appear turquoise when it contains no blue or green pigment. (b) Explain how it can also appear violet if light falls on it in a different direction. (c) Explain how it can present different colors to your two eyes simultaneously, which is a characteristic of iridescence. (d) A compact disc can appear to be any color of the rainbow. Explain why the portion of the feather in Figure P27.68b cannot appear yellow or red. (e) What could be different about the array of melanin rods in a portion of the feather that does appear to be red?

Chapter 27, Problem 68P, Iridescent peacock feathers are shown in Figure P27.68a (page 938). The surface of one microscopic

Figure P27.68 (a) Iridescence in peacock feathers. (b) Microscopic section of a feather showing dark melanin rods in a pale keratin matrix.

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Chapter 27, Problem 67P

Chapter 27, Problem 69P

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Chapter 27 Solutions

Bundle: Principles of Physics: A Calculus-Based Text, 5th + WebAssign Printed Access Card for Serway/Jewett's Principles of Physics: A Calculus-Based Text, 5th Edition, Multi-Term

Ch. 27.3 - Which of the following causes the fringes in a...Ch. 27.5 - In a laboratory accident, you spill two liquids...Ch. 27.5 - Prob. 27.3QQ Ch. 27.6 - Prob. 27.4QQ Ch. 27.7 - Suppose you are observing a binary star with a...Ch. 27.8 - Ultraviolet light of wavelength 350 nm is incident...Ch. 27 - Consider a wave passing through a single slit....Ch. 27 - Prob. 2OQ Ch. 27 - Suppose Youngs double-slit experiment is performed...Ch. 27 - Prob. 4OQ

Ch. 27 - Prob. 5OQ Ch. 27 - Prob. 6OQ Ch. 27 - A monochromatic beam of light of wavelength 500 nm...Ch. 27 - A film of oil on a puddle in a parking lot shows a...Ch. 27 - Prob. 9OQ Ch. 27 - A Fraunhofer diffraction pattern is produced on a...Ch. 27 - Prob. 11OQ Ch. 27 - Prob. 12OQ Ch. 27 - Why is it advantageous to use a large-diameter...Ch. 27 - Prob. 1CQ Ch. 27 - Prob. 2CQ Ch. 27 - Prob. 3CQ Ch. 27 - Prob. 4CQ Ch. 27 - Why is the lens on a good-quality camera coated...Ch. 27 - Prob. 6CQ Ch. 27 - Prob. 7CQ Ch. 27 - Prob. 8CQ Ch. 27 - A laser beam is incident at a shallow angle on a...Ch. 27 - Prob. 10CQ Ch. 27 - Prob. 11CQ Ch. 27 - Prob. 12CQ Ch. 27 - John William Strutt, Lord Rayleigh (1842–1919),...Ch. 27 - Prob. 1P Ch. 27 - Youngs double-slit experiment underlies the...Ch. 27 - Two radio antennas separated by d = 300 m as shown...Ch. 27 - Prob. 4P Ch. 27 - Prob. 5P Ch. 27 - Prob. 6P Ch. 27 - In Figure P27.7 (not to scale), let L = 1.20 m and...Ch. 27 - Prob. 8P Ch. 27 - Prob. 9P Ch. 27 - Prob. 10P Ch. 27 - Two slits are separated by 0.180 mm. An...Ch. 27 - Prob. 12P Ch. 27 - A pair of narrow, parallel slits separated by...Ch. 27 - Coherent light rays of wavelength strike a pair...Ch. 27 - Prob. 15P Ch. 27 - Prob. 16P Ch. 27 - A riverside warehouse has several small doors...Ch. 27 - Prob. 18P Ch. 27 - Prob. 19P Ch. 27 - Astronomers observe the chromosphere of the Sun...Ch. 27 - Prob. 21P Ch. 27 - Prob. 22P Ch. 27 - A beam of 580-nm light passes through two closely...Ch. 27 - Prob. 24P Ch. 27 - An air wedge is formed between two glass plates...Ch. 27 - Prob. 26P Ch. 27 - Prob. 27P Ch. 27 - Prob. 28P Ch. 27 - Prob. 29P Ch. 27 - Prob. 30P Ch. 27 - Prob. 31P Ch. 27 - Prob. 32P Ch. 27 - A beam of monochromatic green light is diffracted...Ch. 27 - Prob. 34P Ch. 27 - Prob. 35P Ch. 27 - Prob. 36P Ch. 27 - Prob. 37P Ch. 27 - Prob. 38P Ch. 27 - Prob. 39P Ch. 27 - White light is spread out into its spectral...Ch. 27 - Prob. 41P Ch. 27 - Prob. 42P Ch. 27 - Prob. 43P Ch. 27 - Prob. 44P Ch. 27 - Prob. 45P Ch. 27 - Prob. 46P Ch. 27 - Prob. 47P Ch. 27 - Prob. 48P Ch. 27 - Prob. 49P Ch. 27 - Prob. 50P Ch. 27 - Prob. 51P Ch. 27 - A wide beam of laser light with a wavelength of...Ch. 27 - Prob. 53P Ch. 27 - Prob. 54P Ch. 27 - Prob. 55P Ch. 27 - Prob. 56P Ch. 27 - Prob. 57P Ch. 27 - Prob. 58P Ch. 27 - Prob. 59P Ch. 27 - Prob. 60P Ch. 27 - Prob. 61P Ch. 27 - Prob. 62P Ch. 27 - Both sides of a uniform film that has index of...Ch. 27 - Prob. 64P Ch. 27 - Light of wavelength 500 nm is incident normally on...Ch. 27 - Prob. 66P Ch. 27 - A beam of bright red light of wavelength 654 nm...Ch. 27 - Iridescent peacock feathers are shown in Figure...Ch. 27 - Prob. 69P Ch. 27 - Prob. 70P Ch. 27 - Figure CQ27.4 shows an unbroken soap film in a...

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Solution Summary: The author explains how feather structure of peacock apperas in turquoise color without blue or green pigments.

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