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 85
d during each revolution accord-ing to the level of the jet. If the latter is at its lowest posi-tion, the jet can only impinge for a very brief period on thecontacts, and as we raise the nozzle, larger and larger seg-ments of the triangular contacts present themselves, untilfinally, at the highest… … Fig. 30. tigh tening the vibrating spring, and in the ordinary dippermercury break by raising the level of the mercury. As the instrument contains no reciprocating mechanismand is perfectly balanced, we may run it at a very highspeed without fear of unduly increasing the wear or theattendant noise.…
Radiography · X-rays
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