The Wizard of Menlo Park: How Thomas Alva Edison Invented the Modern World

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Gabriela: This approach helped the team overcome a wiring problem as they furiously work to build their proof of concept. Previously, they'd try running overhead cables, but weather had wreaked havoc on their system. Plus, cities were becoming clogged with telegraph wires. It was a major hurdle. Theosophical Society Members 1875–1942 – Historical membership list of the Theosophical Society (Adyar) 1875–1942". tsmembers.org. Archived from the original on October 9, 2018 . Retrieved October 8, 2018. The West Orange lab included many successes with sound recording, movies, batteries and other inventions. But even with 1,093 patents, Edison could not keep up with the modern world he had helped to create. By 1930, only seven men still worked in the labs. The factory buildings still produced dictation machines and batteries, but never regained their former glory. In 1959, Edison 's son Charles sold the company to McGraw Electric. By 1971, the McGraw-Edison company had moved to the midwest. Most of the old factory buildings had been torn down.

Davis, L. J. (1998). Fleet Fire: Thomas Edison and the Pioneers of the Electric Revolution. New York: Doubleday. ISBN 978-0-385-47927-1. Lighting A Revolution: 19th Century Promotion". Smithsonian Institution. Archived from the original on October 10, 2013 . Retrieved July 23, 2013. William Joseph Hammer, a consulting electrical engineer, started working for Edison and began his duties as a laboratory assistant in December 1879. He assisted in experiments on the telephone, phonograph, electric railway, iron ore separator, electric lighting, and other developing inventions. However, Hammer worked primarily on the incandescent electric lamp and was put in charge of tests and records on that device (see Hammer Historical Collection of Incandescent Electric Lamps). In 1880, he was appointed chief engineer of the Edison Lamp Works. In his first year, the plant under general manager Francis Robbins Upton turned out 50,000 lamps. According to Edison, Hammer was "a pioneer of incandescent electric lighting". [33] Frank J. Sprague, a competent mathematician and former naval officer, was recruited by Edward H. Johnson and joined the Edison organization in 1883. One of Sprague's contributions to the Edison Laboratory at Menlo Park was to expand Edison's mathematical methods. Despite the common belief that Edison did not use mathematics, analysis of his notebooks reveal that he was an astute user of mathematical analysis conducted by his assistants such as Francis Robbins Upton, for example, determining the critical parameters of his electric lighting system including lamp resistance by an analysis of Ohm's Law, Joule's Law and economics. [34] Edison's Menlo Park Lab, 1880 Duke University Rare Book, Manuscript, and Special Collections Library: "Edison fears the hidden perils of the x-rays". New York World, August 3, 1903, Durham, NC. Albion, Michele Wehrwein. (2008). The Florida Life of Thomas Edison. Gainesville: University Press of Florida. ISBN 978-0-8130-3259-7.Edison's last breath is reportedly contained in a test tube at The Henry Ford museum near Detroit. Ford reportedly convinced Charles Edison to seal a test tube of air in the inventor's room shortly after his death, as a memento. [118] A plaster death mask and casts of Edison's hands were also made. [119] Mina died in 1947. Samuel Insull – started in 1881, rose to become VP of General Electric (1892) then President of Chicago Edison

Gabriela: "The laboratory life with Edison was a strenuous but joyous life for all physically, mentally, and emotionally. We worked long night hours during the week, frequently to the limit of human endurance." The President of the Third French Republic, Jules Grévy, on the recommendation of his Minister of Foreign Affairs, Jules Barthélemy-Saint-Hilaire, and with the presentations of the Minister of Posts and Telegraphs, Louis Cochery, designated Edison with the distinction of an Officer of the Legion of Honour ( Légion d'honneur) by decree on November 10, 1881; [150] Edison was also named a Chevalier in the Legion in 1879, and a Commander in 1889. [151] Gabriela: For instance, if they just ran a full current through the system, it would catch on fire. So while one part of the group works on the wiring, someone has to invent and build the safety fuse to make sure nothing overheats. a b c d Zarrelli, Natalie (October 18, 2016). "Dial-a-Ghost on Thomas Edison's Least Successful Invention: the Spirit Phone". Atlas Obscura. Archived from the original on December 10, 2021 . Retrieved December 10, 2021.Riedstra, L. (2010). "Stratford's Railway Industry" (PDF). Visit Stratford. Stratford Tourism. Archived from the original (PDF) on March 7, 2017 . Retrieved March 6, 2017. Biographiq (2008). Thomas Edison: Life of an Electrifying Man. Filiquarian Publishing. p.15. ISBN 978-1-59986-216-3. a b "Edison Comes Out Unqalifiedly for Suffrage". Passaic Daily News. October 7, 1915. p.12. Archived from the original on August 2, 2021 . Retrieved August 2, 2021– via Newspapers.com.

Moses G. Farmer, Eliot's Inventor". Archived from the original on June 19, 2006 . Retrieved March 11, 2006. In 1923, the American Institute of Electrical Engineers created the Edison Medal and he was its first recipient. [151] Paul Israel: John Ott, who was a machinist at Menlo Park, becomes one of the central experimenters that's trying to develop voltage regulators for dynamos.Trollinger, Vernon (February 11, 2013). "Happy Birthday, Thomas Edison!". Bounce Energy. Archived from the original on June 2, 2013 . Retrieved February 24, 2013. Israel, Paul. "Edison's Laboratory". The Gilder Lehrman Institute of American History. Archived from the original on February 25, 2013 . Retrieved February 24, 2013.