Practical radiography : a handbook for physicians, surgeons, and other users of X-rays (1901)
Isenthal, A. W, Ward, H. Snowden (Henry Snowden), 1865-1911 · London : Published for The Photogram, Ltd. by Dawbarn and Ward, Ltd. · leaf 83
interrupters consists of asuction tube bent at right angles, rapidly rotating round 68 Practical Radiography its vertical axis and with the lower end permanentlydipping in a quantity of mercury. The mercury rises bycentrifugal force, and is forced out of the horizontal branchof the tube in the… … Fie. 28. the contact cylinder is fitted with sectors of insulatingmaterial, then, on rotating the bent tube, we obtain aseries of interruptions, the frequency of which is pro-portional to the number of contacts and the revolutions ofthe spindle. Eeplacing the contact pieces by others ofvarious…
Radiography · X-rays
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