Discoveries and inventions of the nineteenth century (1905)
Routledge, Robert · London : G. Routledge and Sons · leaf 503
be accom-modated to the work required. Thus, for example, if a skiagraph of thehand be attempted with an apparatus in which these factors are carriedto too high a degree, the resulting X rays will pass through the bonesalmost as freely as through the surrounding tissues, and their shadowswill… … Fig. 232^.—A Skiagraph of Layers of Various Substances. ently identical construction have been used in the hands of the same, orof different, observers. Perhaps more depends also on the time of ex-posure. For instance, if a short exposure be given in the case of the hand,the photograph will be…
Inventions
Internet Archive · Boston Library Consortium · Public Domain Mark 1.0. Free to use for anything.
