The outlines of physics: an elementary text-book (1897)
Nichols, E. L. (Edward Leamington), 1854-1937 · New York, The Macmillan Company; London, Macmillan & Co., Ltd. · leaf 404
the apparatus so as to project a well-definedspectrum upon the screen, interpose a flat glass cell containing thechlorophyl solution in the path of the ray. Note the formationof dark bands produced by the absorption of the colors correspondingto those regions of the spectrum which are absorbed in… … Fig. 361. (6) Substitute for the chlorophyl a very .dilute solution of thepotassium permanganate, and note that an entirely different set ofbands are produced. Strengthen the solution from time to time, andnote the increased blackness of the bands as the absorption becomesmore marked; also the…
Physics
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