The standard electrical dictionary; a popular dictionary of words, terms, and phrases, used in the practice of electrical engineering (1897)
Sloane, T. O'Conor (Thomas O'Conor), 1851-1940 · New York, H. W. Henley & co. · leaf 418
. Its distance from thescreen is e. Its light goes through the concave lens L and is dis-persed as shown over an area A1, instead of the much smaller areaA, which the same rays would otherwise cover. Calling / the dis-tance of the lens from the screen,/ its focus, and c the distance ofthe standard… … Fig. 260. Diagram of Principle of the Dispersion Photometer. The cut, Fig. 261, gives a perspective view of Ayrtons Dis-persion Photometer. Cis the standard candle, L the concave lens,
Electricity
Internet Archive · Library of Congress · Public Domain Mark 1.0. Free to use for anything.
