Light visible and invisible : a series of lectures delivered at the Royal Institution of Great Britain, at Christmas, 1896 (1897)
Thompson, Silvanus Phillips, 1851-1916, Royal Institution of Great Britain · New York : Macmillan · leaf 111
colour-whirler, having a diskcovered over half with blue and half with yellowgelatine, and on whirling it round the blue and yellowmix, and make white. Here is an experiment that any boy might make athome. A cardboard disk is dividedinto twelve sectors, six of which arecovered with blue paper, and… … ii VISIBLE SPECTRUM AND THE EYE 91 pair of tints which thus mixed together make white.That is to say, if any two tints are so related that eachcontains the constituents that are wanting in the other,then we describe them as the complement one of theother. Here is a table of some tints which…
Light · X-rays
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