A dictionary of electrical words, terms and phrases (1898)
Houston, Edwin J. (Edwin James), 1847-1914 · New York, The W. J. Johnston company · leaf 408
by thepassage of an electric discharge. The phosphorescent material is placed in anexhausted glass tube, as shown in Fig. 426, andsubmitted to the action of a series of discharges,as from a Ruhmkorff coil, or Holtz machine.The violet-blue light of such discharge is veryefficient in producing… … Fig. 42 b. Electric Phosphorescence. Phosphorescence, Physical Phos-phorescence produced in matter by the actualimpact of light waves resulting in a vibratory4 motion of the molecules of sufficient rapidityto cause them to emit light. Physical phosphorescence is distinguished fromchemical…
Electricity · Electrical engineering
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