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Sir John Ambrose Fleming FRS [1] (29 November 1849 – 18 April 1945) was an English electrical engineer and physicist who invented the first thermionic valve or vacuum tube, [2] designed the radio transmitter with which the first transatlantic radio transmission was made, and also established the right-hand rule used in physics.
Sir John Ambrose Fleming (born Nov. 29, 1849, Lancaster, Lancashire, Eng.—died April 18, 1945, Sidmouth, Devon) was an English engineer who made numerous contributions to electronics, photometry, electric measurements, and wireless telegraphy.
- The Editors of Encyclopaedia Britannica
- Childhood Homeschool, Amateur Engineer and Photographer
- Deaf Boy Excels at Mathematics
- Becoming A Scientist
- Faraday and Maxwell
- Professor
- Father of The Electronic Age
- Fleming’s Patent
- Honors
- Family and The End
John Ambrose Fleming was born on November 29, 1849 in the small city of Lancaster, England, UK. He was known by his middle name, Ambrose. His father, James Fleming was a minister in the Congregational Church. His mother was Mary Ann Bazley. Ambrose was the eldest of their seven children. When Ambrose was three years old the family moved to London. ...
Ambrose was congenitally deaf, a condition that worsened with age. It did not affect him too badly until he was middle-aged. At age 12, he started University College School. He came bottom of his class in Latin, but in Mathematics he excelled. He decided he wanted to become an engineer. To do this he needed to pay a fee to become an apprentice, but...
At age 16, Fleming enrolled at London’s University College, intending to become a schoolteacher. He took courses in Mathematics, Chemistry, and Experimental Physics. Money problems forced him to withdraw after a year. He found work in a stockbroker’s office and studied part time at the University of London. In 1870, age 20, he obtained a Bachelor’s...
In 1874, Fleming began working as a Science teacher at Cheltenham College. He also began publishing his own work – he gave the inaugural paper at the first ever meeting of Physical Society of London in 1874. He studied the works of Michael Faraday, and in 1875 reported on electromagnetic induction to the British Association for the Advancement of S...
Fleming worked as a university lecturer until, in 1882, he became a consultant to the Edison Lighting Company in London. In 1885, he was appointed Professor of Electrical Technology at University College London, a position he held for 42 years.
In 1899, while continuing to work as a university professor, Fleming began working as a consultant to the Marconi Wireless Telegraph Company. He sought a better means of amplifying radio waves, which had been discovered by Heinrich Hertzin 1886. Fleming realized his answer lay in the Edison effect he had seen Frederick Guthrie demonstrate in 1873.
Fleming came up with the idea for the thermionic valve in October 1904, and patented it the following month. In February 1905, he read a paper at the Royal Society about his invention, entitled On the conversion of electrical oscillations into continuous currents by means of a vacuum valve. As part of his agreement with the Marconi Company, Fleming...
1910: Hughes Medal: “for his researches in electricity and electrical measurements.”1921: Albert Medal: “specially for his original invention of the thermionic valve, now so largely employed in wireless telegraphy and for other purposes.”1928: Faraday Medal of the Institution of Electrical Engineers.1929: Knighted for service to Science and Industry, becoming Sir Ambrose FlemingIn June 1887, age 37, Fleming married 30-year-old Clara Ripley Pratt, a lawyer’s daughter. Clara died in 1917. In 1926, age 76, Fleming retired to the small coastal town of Sidmouth to share a house with two of his sisters. He converted the basement into a laboratory. Fleming was devout Anglican. After he retired, he preached about the Resurrection...
Nov 26, 2017 · Sir John Ambrose Fleming is one of the world’s most famous and beloved electrical engineers of all time. Fleming made many great contributions to mankind and some groundbreaking innovations in...
John Ambrose Fleming was an electronics pioneer who invented the oscillation valve, or vacuum tube, a device that would help make radios, televisions, telephones and even early electronic computers possible.
Jul 18, 2020 · John Ambrose Fleming's invention of the vacuum tube heavily influenced modern-day electronics and reshaped telecommunications. His right-hand rule is taught globally to those learning about electromagnetism.
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May 9, 2018 · The work of British scientist John Ambrose Fleming (1849-1945) in inventing the thermionic valve or vacuum tube, arguably laid the basis for modern electronics. The so-called Fleming valve was the first electronic tube device, and was used to detect high-frequency wireless signals.
