Discoveries and inventions of the nineteenth century (1905)
Routledge, Robert · London : G. Routledge and Sons · leaf 500
ly thevariations in the conditions gave rise to increased knowledge of thephenomena generally. The experiment just alluded was one in which adry photographic plate contained in one of the camera dark slides, nowso familiar to every one, was placed (with the slide still closed by itswooden cover of… … FlG. 232^.—Skiagraph of a Hafid, by Dr. Roentgen. The Third Fingerhas a Rinir on it. the surrounamg tissues, was obtained. Much popular misconception asto the powers of the new photography arose from want of knowledgeof the process by which these strange pictures were obtained, the commonnotion…
Inventions
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