Addyman, Frank Thornton · London : Scott, Greenwood & co. · leaf 221
himself. To photograph a hand on a very rapid plate, the followingexposures have been recorded :—- With a 20-in. coil and a mercury break, one flash (onemake and break) will give the outline of the bones; 20 flasheswill give an excellent radiogram. I have taken skiagrams of hands with a small coil… … RADIOGRAPHY. 177 working at about 7-in. spark, the tube being at a distanceof 18 ins. from the plate, and exposure lasted 40 seconds. Generally speaking, with the coils mostly in use, that is,6-in. to 10-in., exposures of from 20 seconds to a minute, ac-cording to circumstances, may be used. An arm…
X-rays
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