author - "Herbert N. Casson"
arch. Already, for half a yearor longer, Bell had known the correct theory ofthe telephone; but he had not realized that thefeeble undulatory current generated by a magnetwas strong enough for the transmission of speech.He had been taught to undervalue the incredibleefficiency of electricity.Not only was Bell himself a teacher of thelaws of speech, so highly skilled that he wasan instructor in Boston University. His father,also, his two brothers, his uncle, and hisgrandfather had taught the
arch. Already, for half a yearor longer, Bell had known the correct theory ofthe telephone; but he had not realized that thefeeble undulatory current generated by a magnetwas strong enough for the transmission of speech.He had been taught to undervalue the incredibleefficiency of electricity.Not only was Bell himself a teacher of thelaws of speech, so highly skilled that he wasan instructor in Boston University. His father,also, his two brothers, his uncle, and hisgrandfather had taught the