Light, photometry and illumination : a thoroughly rev. ed. of ''Electrical illuminating engineering'' (1912)
Barrows, William Edward, 1878-1960 · New York ; London : McGraw-Hill Book Co. · leaf 223
In order, therefore, to illuminate larger areas uniformly use must * Acknowledgement is made of an excellent article on this subject by Mr.A. A. Wohlauer, Elect. World, Vol. 50, p. 1207, Dec. 21, 1907. 208 LIGHT, PHOTOMETRY AND ILLUMINATION be made of a number of lamps so arranged and with the… … Fig. 110.—Distribution curve for uniform illumination by means of one source.
Light · Photometry · Electric lighting
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