A school classroom having a general dimension of 20 ft x 40 ft is to be lighted at an average footcandle of 100. How many 4-lamp fixtures with an output per lamp of 3,200 lumens are required? Assume CU = 0.46 and MF = 0.70. Show detailed solution.

A school classroom having a general dimension of 20 ft x 40 ft is to be lighted at an average footcandle of 100. How many 4-lamp fixtures with an output per lamp of 3,200 lumens are required? Assume CU = 0.46 and MF = 0.70. Show detailed solution.

An Introduction to Physical Science

14th Edition

ISBN:9781305079137

Author:James Shipman, Jerry D. Wilson, Charles A. Higgins, Omar Torres

Publisher:James Shipman, Jerry D. Wilson, Charles A. Higgins, Omar Torres

Chapter1: Measurement

Section: Chapter Questions

Problem 11E

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Dispersion of White Light

Snell’s law is a formula that gives a relation between the angle of incidence and angle of refraction and is given as:

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