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History of the telephone △△△ (ILLERMERNERTI) △△△
Transcript of History of the telephone △△△ (ILLERMERNERTI) △△△
"A Centenary of Christmas Phone Calls." - IOL SciTech. N.p., n.d. Web. 16 Oct. 2014.
"History of the Atlantic Cable & Submarine Telegraphy - Key West." History of the Atlantic Cable & Submarine Telegraphy - Key West. N.p., n.d. Web. 16 Oct. 2014.
Madrigal, Alexis C. "The First Transcontinental Call Was Made Today in 1915." The Atlantic. Atlantic Media Company, 25 Jan. 2011. Web. 16 Oct. 2014.
"Telephone History." Telephone History. N.p., n.d. Web. 16 Oct. 2014.
"Telephone Timeline - Greatest Engineering Achievements of the Twentieth Century." Telephone Timeline - Greatest Engineering Achievements of the Twentieth Century. N.p., n.d. Web. 16 Oct. 2014.
Rotary dials now have finger holes
not an iPhone
Finger holes then
Finger holes now
Ergonomics used by AT&T to find out how long the handle of the phone should be by measuring the faces of 4000 citizens
Lee De Forest's 1907 patent of the triode, or three-element vacuum tube
Amplifies signals, allows transcontinental calls
AT&T develops the frequency multiplexing concept, allowing several telephone calls at the same time.
Dial tone was introduced to the public in a German city by the Siemens company, however it was unpopular
Dial tone would later become extremely popular
Rotary dial telephones were mass distributed by The Automatic Electric company
Daniel Sucks btw
IT WAS ME THAT INVENTED
AT&T: multiple phone calls? now we can:
HISTORY OF THE TELEPHONE
Measure ear to mouth
Who really invented the telephone?
BUT WHO REALLY INVENTED THE TELEPHONE?
Alexander Graham Bell