Elementary natural philosophy : designed for high schools and academies (1881)
Griffin, La Roy F. (La Roy Freese), 1844-1916 · Philadelphia : Sower, Potts & Co. · leaf 289
Fig. 340 934. Oeissler Tubes are tubes that have been exhausted RADIANT MATTER. 279 so that only a trace of gas remains. They are then placedin the path of the induced current. They glow with lightwhose color depends upon the kind of gas which they con-tain, and also to some extent upon the degree… … Fig. 341. many forms.* The bulbs are often made of uranium glass,when they shine for a short time after the current ceases,as the glass becomes fluorescent with a pale green light.No. 2 is such a tube. Or the current may pass through acentral tube which is surrounded with a liquid, as…
Physics
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