File:Bell's October 1873 experiments using a liquid transmitter.jpg

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English: In October, 1873, Bell began experiments at 292 Essex Street in Boston using vibrating reeds (R) set in motion by speaking into the mouthpiece or orifice (O). A platinum wire (P) attached to the reed (R) dipped into a cup of liquid -- in this case, mercury (M). the round mouthpiece that Bell spoke into was made of gutta percha (gg). The drawing is in the Library of Congress.
Date
Source Library of Congress
Author
Alexander Graham Bell  (1847–1922)  wikidata:Q34286 s:en:Author:Alexander Graham Bell q:en:Alexander Graham Bell
 
Alexander Graham Bell
Alternative names
Alexander G. Bell; Graham Bell; Alexander Bell
Description American-British physicist, electrical engineer, engineer, businessperson, inventor and professor
Date of birth/death 3 March 1847 Edit this at Wikidata 2 August 1922 Edit this at Wikidata
Location of birth/death Edinburgh Beinn Bhreagh
Authority file
creator QS:P170,Q34286

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