[DOC] [TLE] Thomas Edison - Wikipedia [PAR] Thomas Alva Edison (February 11, 1847  October 18, 1931) was an American 
inventor and .... Edison became a telegraph operator after he saved three-year-
old Jimmie .... In just over a decade, Edison's Menlo Park laboratory had 
expanded to ... invented and developed the carbon microphone used in all 
telephones along... [DOC] [TLE] Thomas Edison - United States History [PAR] At age 29, Edison began work on the carbon transmitter, which made Alexander 
Graham Bell's new telephone audible for practical use. Shortly thereafter, Edison 
moved his laboratory to Menlo Park, New Jersey. In 1877 he ... Contrary to 
popular belief, he didn't invent the light bulb, but improved upon a 50-year-old 
idea. [DOC] [TLE] Lighting A Revolution: 19th Century Invention [PAR] Circumstances of the invention of Edison's electric lamps. ... At age 12 he went to 
work selling newspapers and sundries on a train ... Edison's laboratory in Menlo 
Park, New Jersey, proved critical to the inventor's success. ... An early project to 
improve on Bell's newly invented telephone resulted in a carbon transmitter and... [DOC] [TLE] The Invention Factory - Year of Innovation Series, The Edison Papers [PAR] [Rutgers, The State University of New Jersey] ... Edison didn't just invent at Menlo 
Park  he had been inventing for years before and went on to ... The lab at Menlo 
Park was a collaborative atmosphere, allowing Edison to develop a .... Edison's 
first successful invention for Western Union was the carbon-button transmitter. [DOC] [TLE] Telephone Transmitter - The Edison Papers [PAR] [Rutgers, The State University of New Jersey] ... When Edison began working on 
the telephone in 1876 he focused on the weak point in Alexander ... In Bell's 
transmitter, sound waves vibrated a permanent magnet that in turn set up an 
induced ... In order to vary the resistance of the current, Edison decided to use 
carbon. [DOC] [TLE] Thomas Edison - Inventions - HISTORY.com [PAR] Thomas Edison's most famous invention, the lightbulb, paved the way for ... He 
also created the world's first industrial research laboratory. Known as the Wizard 
of Menlo Park, for the New Jersey town where he did ... In 1877, Edison 
developed the carbon transmitter, a device that improved the audibility of the 
telephone by... [DOC] [TLE] Thomas Edison, Chemist - American Chemical Society [PAR] Edison was allowed to keep a chemistry set onboard the train so he could 
conduct ... in 1876 he was able to establish his own laboratory at Menlo Park, 
New Jersey. ... The setup of the Menlo Park laboratory was especially suitable for 
invention ... carbon transmitter (an improvement to the telephone microphone that 
Edison... [DOC] [TLE] Thomas Alva Edison - ATCS Newsletter Article [PAR] Edison, inventor and genius, whose development of a practical electric light bulb, 
electric ... Edison earned $40,000, and with this money he established his own 
laboratory in 1876. This laboratory was at Menlo Park in rural New Jersey. ... the 
following caption: "Edison's work on the carbon telephone transmitter helped 
pave... [DOC] [TLE] Thomas Alva Edison | American inventor | Britannica.com [PAR] Oct 14, 2016 ... In addition, he created the world's first industrial research laboratory. ... the 
phonograph, the carbon-button transmitter for the telephone speaker and ..... In 
fact, it was not until the late 1890s, after Edison had established ... Thomas Alva 
Edison (right) in his laboratory in West Orange, N.J., with his assistant. [DOC] [TLE] Famous Inventor Thomas Edison  Science  Muir Middle School [PAR] Thomas Edison was more responsible than any one else for creating the ... 
Immediately thereafter, he began pleading with every adult he met to explain the 
..... after Edison moved his laboratory to Menlo Park, N.J. in 1876, he invented - in 
1877 .... history of the telephone, Edison is best known for the carbon transmitter 
that... [DOC] [TLE] A Brief Biography of Thomas Alva Edison | Thomas Edison Muckers [PAR] A Brief Biography of Thomas Alva Edison written by John D. Venable ... and he

Question: Shortly after establishing a lab in Menlo Park, N.J., he invented the carbon telephone transmitter
Answer: Edison