Meadowcroft, Wm. H. (William Henry), 1853- · New York : The American Technical Book Co · leaf 131
. In April, 1896,it was announced in the technical journals, thata tube of substantial^ the same design had beenbrought out in England for X ray investigationsand used successfully. This form is knowncommercially as the single focus tube. In the light of investigations made by him withRuhmkorff… … Fig. 28. which would focus the rays, it appeared desirable,therefore, that the tube should be one that wouldbe capable of doing so under discharges of such The A B C of the X Rays. 121 a nature, and at the same time be useful as afocussing tube under discharges of a uni-direc-tional nature, such as…
X-rays
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