Word: lights
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Dates: during 1890-1899
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...Taking an ordinary Leclanche cell, such as is used in connection with house bells, Professor Trowbridge showed how the carbon pole would be the annode and the zinc pole the cathode. It would take 50 or 60 of such cells arranged in series of tandem to produce one incandescent light. If the loop of wire is broken in the middle the lamp will go out. Then if more cells are added until the number is 10, 000 a pale luminous glow will come from the lamp. One terminal of the lamp is called the annode and from this stream these...
...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...
After the experiment was finished Professor Trowbridge explained that the same light can be produced with a common electric machine, but the plate must be exposed an hour when this machine is used. This shows how simple the process really is. The chief advantage of the large apparatus is that when it is used only a minute's exposure is necessary. The distinguishing character of the cathode rays is that they do not go between the two poles. They can be thrown any way. For instance, a small piece of aluminum can be used to throw them in any direction...
...evenings and unfits them for study. The reason for this is simply that they have not gone about it in the right way; either they have overdone it or they have not taken their exercise systematically. For the great majority of men the best work is regular light exercise on the pulley weights or with the wooden dumb-bells. But to some these methods seem slow and tedious. They desire to become strong in a few days, and so they try to lift heavy iron bells and perform feats upon the parallel and horizontal bars. The result of such...
...Laboratory will be severely tested at the first lecture on this subject this evening. Interest in the work of Professor Trowbridge has not been confined to the University by any means. The whole scientific world has watched with attention the results of his experiments with this wonderful kind of light. The lecture tonight will be made doubly entertaining by stereopticon illustrations...