EBK COSMIC PERSPECTIVE, THE
EBK COSMIC PERSPECTIVE, THE
8th Edition
ISBN: 8220101465108
Author: Voit
Publisher: PEARSON
Question
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Chapter 5, Problem 57EAP

(a)

To determine

The wavelength with maximum intensity emitted from bulb and then compare it with the wavelength with maximum intensity emitted by sun.

(b)

To determine

Whether the light emitted by bulb will be same, redder or bluer than sun. Explain the answer. Using this answer, explain why professional photographer uses different light for indoor outdoor.

(c)

To determine

To explain:

Whether all the energy emitted by incandescent bulb is in visible range or not. Using this answer explain why the incandescent bulbs are usually so hot.

(d)

To determine

To explain:

Why fluorescent bulbs emits more visible light than incandescent bulbs.

(e)

To determine

Whether the fluorescent light bulbs are cost effective or not. What factors, other than initial cost and energy efficiency, need to be considered to know it.

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Exercise 1: (a) Using the explicit formulae derived in the lectures for the (2j+1) × (2j + 1) repre- sentation matrices Dm'm, (J/h), derive the 3 × 3 matrices corresponding to the case j = 1. (b) Verify that they satisfy the so(3) Lie algebra commutation relation: [D(Î₁/ħ), D(Î₂/h)]m'm₁ = iƊm'm² (Ĵ3/h). (c) Prove the identity 3 Dm'm,(β) = Σ (D(Ρ)D(Ρ))m'¡m; · i=1

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