Hawkins electrical guide ... : questions, answers & illustrations : a progressive course of study for engineers, electricians, students and those desiring to acquire a working knowledge of electricity and its applications ; a practical treatise (1914)
Hawkins, N. (Nehemiah), 1833-1928 · New York : T. Audel & Co. · leaf 172
t R R \JJL1 … Fig. 3,101.—Morses Experiment. Water the medium. In 1844 Morse addressed a letter toCongress which reads in part as follows: In the autumn of 1842, at the request of theAmerican Institute, I undertook to give to the public in New York a demonstration ofthe practicability of my telegraph, by…
Electrical engineering
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