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 311
ON attainment. This consideration is of the more importancebecause, as we shall find, even when maximum weight is giventhis consideration, our derived curve will present considerablethough by no means insurmountable difficulties of practicalrealization. Second, the illumination at any point should… … Fig. 177.—Distribution of illumination (lamps staggered). Fig. 177 shows a sine wave type of illumination curve. Thisdistribution curve has a relatively low maximum and is as welladaptable to practical realization as any curve obtainable. Ithas, however, one defect. The maximum value occurs at…
Light · Photometry · Electric lighting
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