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# If energy is radiated by all objects, why can we not see

ISBN: 9780130606204 3

## Solution for problem 2Q Chapter 27

Physics: Principles with Applications | 6th Edition

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Physics: Principles with Applications | 6th Edition

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Problem 2Q

Problem 2Q

If energy is radiated by all objects, why can we not see them in the dark? (See also Section 14-8 )

Step-by-Step Solution:

Solution 2Q: Energy is radiated by each and every body in the universe, above its absolute temperature then also we are unable to see an object in the dark as their wavelength does not lie in the visible spectrum region. Step 1 of 2 Concept: Visible Spectrum: The region(part) of the electromagnetic wave spectrum which is visible to the human eye is known as visible spectrum. Black Body Radiation: The rate of energy radiated by a black body depends on its temperature. The relation between energy and temperature is given by Stefan-Boltzmann law. According to Stefan-Boltzmann law, rate of energy radiated by the body is directly proportional to the fourth power of its Kelvin temperature. Mathematically, dQ 4 dt T Quantum Law: Energy (E) of an electromagnetic radiation is inversely proportional to the wavelength () of the radiation.

Step 2 of 2

##### ISBN: 9780130606204

This full solution covers the following key subjects: dark, Energy, objects, radiated, see. This expansive textbook survival guide covers 35 chapters, and 3914 solutions. The full step-by-step solution to problem: 2Q from chapter: 27 was answered by , our top Physics solution expert on 03/03/17, 03:53PM. The answer to “If energy is radiated by all objects, why can we not see them in the dark? (See also Section 14-8 )” is broken down into a number of easy to follow steps, and 21 words. Since the solution to 2Q from 27 chapter was answered, more than 453 students have viewed the full step-by-step answer. Physics: Principles with Applications was written by and is associated to the ISBN: 9780130606204. This textbook survival guide was created for the textbook: Physics: Principles with Applications, edition: 6.

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If energy is radiated by all objects, why can we not see