Snelling, Henry Hunt, 1816-1897 · [New York : W.B. Smith] · leaf 28
action of Light in determining theprecipitation of platinate of lime, by SirJohn F. W. Herschel. As these will benoticed under their respective heads, itwill be unnecessary to do more than referto them in this place The magnetisingpower of the solar rays has for many yearsoccupied the attention of… … If a beam of white Light be admittedthrough a small hole in a window shutter,it will form a round white spot upon theplace which it falls. If we interpose aprism of glass, b, so that this beam ofLight may fall upon one of its surfaces, asat «, the white beam not only suffers achange in its…
Photography · Art and photography
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