An elementary book on electricity and magnetism and their applications (1919)
Jackson, Dugald C. (Dugald Caleb), 1865-1951, Jackson, John Price, b. 1868, Black, Newton Henry, b. 1874 · New York, The Macmillian Co · leaf 519
le power and in discussingefficiency state the watts per mean hemispherical candlepower. For example, a certain 300-watt luminous or magnetitearc lamp, when tested, shows the distribution curves whichare given in figure 328. In curve .4 the mean spherical candlepower is 763 and the mean… … Fig. 327. — Distribution of light. Curve Awithout shade, curve B with shade. ELECTRIC LIGHTING 465
Electricity · Magnetism
Internet Archive · Public Domain Mark 1.0. Free to use for anything.
