Millikan, Robert Andrews, Gale, Henry Gordon · Boston : Ginn and Co. · leaf 304
Fig. 268. The relay … S...-.-.:. r. C. Ko. (1791-1872) The inventor of the electromagnetic recording telegraph and of thedot-and-dash alphabet known by his name, was born at Charles-town, Massachusetts, graduated at Yale College in 1810, inventedthe commercial telegraph in 1832, and struggled for twelve yearsin great…
Physics
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