Salt Lake Telegram | 1931-03-10 | Page 4 | Today's Anniversary

ANNIVERSARY AN TODAY'S On March 10 1876 Alexander Graham Gra Gra- ham hani Bell Inventor of the telephone sent the first complete sentence over o Ithe the telephone It was as an order summoning summoning sum sum- moning an assistant in another room Mr Watson come here I want you efforts devoted dc Bells Bell's earliest were to the perfection of a harmonic telegraph telegraph telegraph tel tel- with which he hoped to send several se telegraphic messages simultaneously simultaneously simultaneously simul simul- over a single wire At the same time he also tried to transmit sp speech ch electrically On June 2 2 1875 he ic succeeded in transmitting by wire the sound of a twanging clock spring Others had predicted the possibility ity ty of transmitting speech by wire but had not hit upon the only practicable practicable practicable method Bells Bell's original s system stem s 's tem tern used a device similar to the modern modem modern mod mod- em ern re receiver i er both for sending and receiving The transmitter of today which I has been developed by many is much more delicate and sat- sat I At present re ent the telephone consists essentially of a transmitter an induction coil coll and a receiver connected connected con con- by copper wires and supplied supplied- with a source of oC direct current