Word: ruhmkoff
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...nothing more than a large receiver of air from which the air can be exhausted. In order to get the rays, however, you must push the exhaustion only to a certain point. Now instead of using the 10,000 cells already mentioned to produce the pale blue flame, a Ruhmkoff coil is introduced, which makes it possible to get a high electro-motive force...
...Ruhmkoff coil consists of two coils; one inside called the primary which is a piece of wire only a few feet long; another on the outside called the secondary which is about a mile long. By passing a strong current through the shorter wire and breaking the current a great electric stress and a high force is obtained. Approximately the 10,000 cells would produce 10,000 volts but the three Ruhmkoff coils used in the experiments last night produced approximately 50,000 volts...
...transformation of the Ruhmkoff coils in series and connecting the coils with the tube and then exhausting the air, you get the cathode rays. At this point the experiment was performed. The light in the Crooke's tube was a pale blue on the two pole and light pink in the centre. A fluorescence was given off which was of a light blueish-green color. This, Professor Trowbridge explained, was thought by some to be the cathode rays, but the point is still in doubt. No one knows what the rays are. In connection with this the lecturer took...
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