Gage, Alfred P. (Alfred Payson), 1836-1903, Fessenden, C · Toronto : W.J. Gage · leaf 306
ient for the in-creased resistance, and the light is extinguished. Hence pencils ofcarbon (prepared fromcoke deposited in the ^ distillation of coal in-side of gas retorts),which are less fusible,are used for terminals.For simple experi-ments, these pencils may be held in forceps (Fig. 195) at… … § 234. Voltaic arc. — The light is too intense to admit ofexamination with the naked eve; but if an image of the termi- 286 ELECTRICITY AND IVlAGNETlSM. Fig. 196. nals is thrown on a screen by means of a lens, or a pin-hole ina card, an arch-shaped light is seen extending from poleto pole, as shown…
Physics
Internet Archive · University of Toronto Libraries · Public Domain Mark 1.0. Free to use for anything.
