[DOC] [TLE] Jeopary Questions page 2208 - NAMES IN THE NEWS - TriviaBistro ... [PAR] NAMES IN THE NEWS: After he moves out of his office on Pennsylvania ... "
GRAY" MATTER: In the 1870s he invented elements of a telephone-like device. [DOC] [TLE] Inventors and Inventions of Scientific Instruments ... [PAR] Archimedes invented the water screw, a device for raising water using an 
encased ... Henry Ford (1863-1947) used the first conveyor belt-based assembly-
line in his car ... The dry cell battery was developed in the 1870s-1870s by 
Georges ... Davy discovered the elements boron, sodium, aluminum (whose 
name he later... [DOC] [TLE] History of the Telephone: Service Lines and Switchboards - Inventors [PAR] Alexander Graham Bell and Elisha Gray raced to invent the telephone. ... In the 
1870s, two inventors, Elisha Gray and Alexander Graham Bell, both 
independently designed devices that could transmit speech electrically (the 
telephone). ... technique called "harmonic telegraph" discovered he could hear 
sound over a wire. [DOC] [TLE] Invention of the telephone - Wikipedia [PAR] The invention of the telephone was the culmination of work done by many 
individuals, and .... An early voice communicating device was invented around 
1854 by Antonio ... They claim that Meucci was the actual inventor of the 
telephone, and base .... Bell told Watson, who was at the other end of the line, to 
pluck the reed,... [DOC] [TLE] Carbon microphone - Wikipedia [PAR] The carbon microphone, also known as carbon button microphone, button 
microphone, ... Carbon microphones, usually modified telephone transmitters, 
were widely ... Hughes' device used loosely packed carbon granules - the 
varying pressure ... Hughes decided not to take out a patent; instead, he made 
his invention a gift... [DOC] [TLE] Telegraphy - Wikipedia [PAR] Telegraphy is the long-distance transmission of textual or symbolic messages 
without the ... A "telegraph" is a device for transmitting and receiving messages 
over long distances, i.e., ... by a Telex network, a switched network of teleprinters 
similar to a telephone network. ..... He called his invention a "recording telegraph"
. [DOC] [TLE] Timeline of United States inventions (before 1890) - Wikipedia [PAR] A timeline of United States inventions (before 1890) encompasses the ingenuity 
and innovative ... The octant was invented in 1730 by Thomas Godfrey, a glazier 
in .... invented a cracker-like bread product from just flour and water that he called 
"pilot bread". ..... A doorbell is a signaling device commonly found near a door. [DOC] [TLE] Alexander Graham Bell: 5 Facts on the Father of the Telephone ... [PAR] Jan 25, 2015 ... ... off the communication revolution with his telephone back in the 1870s. ... 
Inventor Alexander Graham Bell made the first transcontinental ... With his father's 
encouragement, he even worked with his older ... This idea influenced the design 
of the iron lung device used to aid polio patients in the 1950s. [DOC] [TLE] Telephones - Engineering and Technology History Wiki [PAR] Jan 9, 2015 ... His device, later known as the gallows telephone due to its shape, produced an 
... Bell wrote what he said, Mr. Watson come here I want to see you while ... The 
phones sported two other important components, both invented and ... So, while 
in the late 1870s one Bell System model rapidly replaced... [DOC] [TLE] Telephone Transmission - Engineering and Technology History Wiki [PAR] May 2, 2015 ... The telephone lines of the late 1870s and early 1880s, such as used to connect 
.... The open-wire line AT&T planned in 1909, and opened in 1911 between ... his 
invention, the audion (the first three-element vacuum tube) to AT&T. ... correctly, 
that if he could increase the vacuum, the device would amplify... [DOC] [TLE] The Non-Western Roots of Modern Audio Technology | Griffonage ... [PAR] Jun 13, 2015 ... I've never been into the debates over who invented the telephone. ... As of the 
mid-1870s, the consensus among leading acousticians was that .... Gray had 
found that he could produce timbrally rich speech-like sounds in

Question: In the 1870s he invented elements of a telephone-like device
Answer: Elisha Gray