Modern electricity and magnetism, theoretically and practically considered (1885)
Avery, Elroy M[cKendree], 1844- [from old catalog] · New York and Chicago, Sheldon and company · leaf 80
theprime conductor and the earth. Experiment 70.—Geisslers Tubesare sealed glass tubes containing ahighly rarefied vapor or gas. Platinumwires are sealed into the glass at eachend, to conduct the electric current tothe interior of the tube. The brilliancyand beauty of the light, the great variety… … —tf-^^^— Fig. 176. 176. They may be used in the dark with an electric machine or aninduction coil (§ 459). 250 FRICTIOKAL ELEOTUtClTY. Experiment 7l.~In Crookess Tubes/ devised in many formsby Prof. Crookes for his investigations of the phenomena of radiantmatter (§ 59 6), the tension of tlie…
Electricity · Magnetism
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