CONCEPTUAL PHYSICS-W/PRACTICING PHYSICS
9th Edition
ISBN: 9780321052025
Author: Hewitt
Publisher: PEARSON
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Question
Chapter 28, Problem 26A
To determine
To explain: The reason for painting the interiors of optical instruments black.
Expert Solution & Answer
Explanation of Solution
Introduction:
In imaging systems, the absorption of light is an important consideration to improve the efficiency of the optical instruments. So, it is necessary to decrease the reflection in optical instruments.
Explanation:
To improve the efficiency of optical instruments, it is necessary to decrease the reflection of light, for example, to improve the performance of telescopes and microscopes. To decrease the reflection, coatings are helpful. They exhibit strong absorption in the light and suppress stray light in optical instruments. High absorption results in high emissivity. Black coating or paint is usually more effective in the absorption of light at all wavelengths and also at angles that are close to the surface of the optics. Thus, black paint is the anti-reflect agent and it absorbs the light to improve the efficiency of optical instruments.
Chapter 28 Solutions
CONCEPTUAL PHYSICS-W/PRACTICING PHYSICS
Ch. 28 - Prob. 1ACh. 28 - Are black and white real colors, in the sense that...Ch. 28 - What is emitted by the vibrating electrons of...Ch. 28 - Prob. 4ACh. 28 - Why does the color of an object look different...Ch. 28 - a. What color(s) of light does a transparent red...Ch. 28 - What is the function of a pigment?Ch. 28 - Why are more and more fire engines being painted...Ch. 28 - How can yellow be produced on a screen if only red...Ch. 28 - What is the name of the color produced by a...
Ch. 28 - Prob. 11ACh. 28 - What are complementary colors?Ch. 28 - What color is the complement of blue?Ch. 28 - Prob. 14ACh. 28 - What colors of ink are used to print full-color...Ch. 28 - Prob. 16ACh. 28 - Prob. 17ACh. 28 - Prob. 18ACh. 28 - Why are clouds white?Ch. 28 - Why are sunsets red?Ch. 28 - Why is water greenish blue?Ch. 28 - Prob. 22ACh. 28 - Prob. 23ACh. 28 - Prob. 24ACh. 28 - Prob. 25ACh. 28 - Prob. 26ACh. 28 - On a TV screen, what dots are activated to produce...Ch. 28 - Prob. 28ACh. 28 - In a dress shop that has only fluorescent...Ch. 28 - Prob. 30ACh. 28 - Prob. 31ACh. 28 - How could you use the spotlights at a play to make...Ch. 28 - Prob. 33ACh. 28 - What colors of ink do color ink-jet printers use...Ch. 28 - Prob. 35ACh. 28 - Your friend says that red and cyan light produce...Ch. 28 - Prob. 37ACh. 28 - Prob. 38ACh. 28 - Prob. 39ACh. 28 - Prob. 40ACh. 28 - If the sky on a certain planet in the solar system...Ch. 28 - Prob. 42ACh. 28 - Prob. 43ACh. 28 - The only light to reach very far beneath the...Ch. 28 - Prob. 45ACh. 28 - Prob. 46ACh. 28 - Prob. 47ACh. 28 - Prob. 48ACh. 28 - Prob. 49ACh. 28 - Prob. 51A
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