Word: tubes
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Dates: during 1890-1899
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...experimenting with his powerful new battery at the Jefferson Laboratory, Professor Trowbridge has recently made a discovery of great interest to doctors and the public in general. In previous experiments with the X-ray, the back of the hand has been placed near the tube, with the result that the skin has been burned off in a painful and dangerous manner. Professor Trowbridge has discovered that the same result is produced by brush discharges in the air. This shows that the burn is due to powerful electrification, and not necessarily to the X-rays...
...results of Professor Trowbridge's most recent experiments with his powerful new battery are of great scientific interest. He has found that if you inclose a straight wire in a glass tube and exhaust the air within, and then send a discharge of high electromotive force through the wire, the whole space of the tube will be brilliantly luminous. It looks as if the effect of the x-rays were produced from every point of the wire although it was formerly supposed that a discharge was necessary to produce this effect. The new ray, however, could probably not be used...
...Laboratory, has been perfecting a battery for electrical discharges. It is now the most powerful apparatus of its kind in the world, and has already been used in several investigations of the x-ray. It is the only battery strong enough to send a discharge through an x-ray tube; all other batteries send the spark around the tube. It has been used repeatedly to show the skeleton of the hand. An idea of its power can be had from the fact that it has a voltage of 1,200,000, and the voltage required to run an electric...
Till now it has been an open question as to how many volts are required to create the flash of the Crooke's tube. This Professor Trowbridge has settled by means of the new battery. Instead of the 20,000 volts which were before considered necessary, he has found that 100,000 are needed to produce the flash, and that with increasing voltage the picture becomes steadily plainer. This current, acting through one ten-millionth of a second, develops one million horse power...
Another important discovery made by Professor Trowbridge is that the current through the Crooke's tube goes in only one direction and not in both as has been supposed...