Church, A. H. (Arthur Herbert), 1834-1915, Vincent Brooks, Day & Son, lithographer, Cassell & Company, publisher · London ; Paris ; New York ; Melbourne : Cassell and Company, Limited · leaf 36
afterwardsFraunhofer further investigated this point, and mappedout no less than 576 of these dark lines, assigning to themost prominent amongst them the letters of the alphabet.These lines, or vacant spaces, in the solar spectrum havebeen traced to the absorptive power for certain rayspossessed by… … Fig. a coloured tracts of the spectrum. We may say, forexample, that the Fraunhofer line, D, occupies verynearly the middle of the orange space in the spectrum,while the pure blue begins at the line f. We areindebted to several distinguished investigators, such asAngstrom, Vierordt, Listing, and…
Colors · Color · Kleuren · Kleurwaarneming · Kleurtheorie
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