Elementary natural philosophy : designed for high schools and academies (1881)
Griffin, La Roy F. (La Roy Freese), 1844-1916 · Philadelphia : Sower, Potts & Co. · leaf 280
Fig. 331. 270 ELECTRICITY. … 910. The Edison Light depends uponincandescence. Fig. 332. A piece of card-board is cut out in the shape of a horse-shoe and baked until it becomes pure car-bon. It is then placed in a glass globe,attached to platinum conducting wiresmelted into the glass, and the globe ex-hausted as completely as…
Physics
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