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Thomas Alva Edison (February 11, 1847 – October 18, 1931) was an American inventor and businessman. [ 1 ] [ 2 ] [ 3 ] He developed many devices in fields such as electric power generation , mass communication , sound recording , and motion pictures. [ 4 ]
To satisfy this demand, Edison invented the electric pen, which uses a perforating function inspired by the printing telegraph. Edison and his associate Charles Batchelor observed that as this device punctured the paper, a mark was left underneath by its chemical solution. Edison took advantage of this property and built the electric pen around it.
Russian engineer Pavel Yablochkov invented the electric carbon arc lamp. 1876: Scottish inventor Alexander Graham Bell patented the telephone. 1877: American inventor Thomas Edison invented the phonograph. 1877: German industrialist Werner von Siemens developed a primitive loudspeaker. 1878: First electric street lighting in Paris, France 1878
He presented a paper on them in 1885, where he referred to thermionic emission as the "Edison Effect." [14] The British physicist John Ambrose Fleming, who in 1882 had accepted a consulting position for the Edison & Swan Electric Light Company of London, discovered in 1885 that the Edison Effect could be used to detect radio waves. Fleming went ...
The Edison Manufacturing Company, originally registered as under the name of the United Edison Manufacturing Company and often known as simply the Edison Company, was organized by scientist / inventor and entrepreneur, Thomas A. Edison (1847-1931), and incorporated in New York City in May 1889.
At age 19 in 1879, William Dickson wrote a letter to American inventor and entrepreneur Thomas Edison seeking employment. He was turned down. That same year Dickson, his mother, and two sisters moved from Britain to Virginia. [4] In 1883 he was finally hired to work at Edison's laboratory in Menlo Park, New Jersey. In 1888, Edison conceived of ...
Getty By Jacquelyn Smith The job interview was born in 1921, when Thomas Edison created a written test to evaluate job candidates' knowledge. Since then, the process has come a long way. "As the ...
Thomas Edison built the world's first large-scale electrical supply network. During the latter part of the 1800s, the study of electricity was largely considered to be a subfield of physics. It was not until the late 19th century that universities started to offer degrees in electrical engineering.