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Sunday, October 25, 2020
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Sir, John Fleming whos full mane’s John Ambrose Fleming. His Biography, activities and his achievement here have discussed. He was born on 29 November 1849 and died on 18 April 1945. Fleming is a scientist who was an English electrical engineer and physicist. Fleming invented the first thermionic valve or vacuum tube, designed a radio transmitter. He created the first transatlantic radio transmission and established the right one. The rules used in physics.
He was the big son of seven children of James Fleming DD family. James Fleming DD wad died in 1879. He was in Lancaster, Lancashire, Mary Anne was his wife, and on 11 February 1850 was baptized. A devout Christian, he once preached in St. Martin-in-the-Fields, London, as proof of his resurrection.
In 1932, he and Douglas assisted in setting up and establishing a Bernard Acworth evolution protest movement. Fleming donated much of his property to Christian charities, especially for the poor. He renowned photographer painted watercolors and enjoyed climbing in the Alps.

John Ambrose Fleming

John Ambrose Fleming

Early year of John Fleming

Ambrose Fleming was born in Lancaster and educated at the Royal Grammar School in London. University College London and then University College London. He entered St. John’s College, Cambridge, in 1877, earned a BA in 1881, and in 1883 became a Fellow of St. John’s. Fleming was the first professor of electrical engineering and He has lectured at universities. There is the University of Cambridge, University College London, and University College Nottingham.
He was also a consultant to the Marconi Wireless Telegraph Company, Swan Company, Ferrante, Edison Telephone and later the Edison Electric Light Company. An important paper on the theory of electrical transformers at Electrical Engineers at London In 1892, presented by Fleming.

Education and marriage of John Fleming

Fleming started school when he was about ten years old, attending a private school where he particularly enjoyed geometry. Before that, his mother trained him and he practically learned by heart, a book called Children’s Guide to Knowledge, a popular book of this time – he even quoted it as an adult.
His schooling continued at the University College School where he practically came to the bottom of the class in Latin, even though he had a Masters in Mathematics. Even in his childhood, he wanted to be an engineer.
He built model boats and engines in his own workshop At 11.  He even created his own camera, the beginning of a lifelong interest in photography. Training to become an engineer was beyond the financial resources of the family, but he reached his goal which was to substitute education with salaried employment.
Fleming admitted to the University College in London for a BSc degree graduated in 1870 and studied under the mathematician Augustus D. Morgan and physicist George Kerry Foster. He became a chemistry student at the Royal College of Science in South Kensington, London (now Imperial College). There he first studied the Alessandro Volta’s battery, which became the subject of his first scientific paper. This was the first paper to be read in the New Physical Society of London (now the Institute of Physics) and displayed on a page of a section of their proceedings.

Research and financial problems

Financial problems were a big problem for him and the problem forced him to the world for living again that earned £400 per year. (He later taught at Rasal School.) His own scientific research continued and he corresponded with James Clark Maxwell of Cambridge University.
On October 27, 1877, at the age of 27, he re-admitted to Cambridge as a student after saving £ 400 a year and donating $ 1 a year. Fleming was one of two or perhaps three university students who attended Maxwell’s last course. He admits that following Maxwell’s speeches is difficult. He said that Maxwell often appeared vague and had a “malicious and persuasive manner of speaking.”
At the event, Fleming was the only student in those lectures. Fleming graduated again, this time with a first-class honors degree in chemistry and physics. He then obtained a DSc from London and spent one year as a demonstrator of mechanical engineering at Cambridge University before being appointed as the first professor of physics and mathematics at University College Nottingham, but left less than a year later.
On June 11, 1887, he married Clara Ripley (married 1856 / –-1917), daughter of the solicitor Walter Freck Pratt of Bath. On July 27, 1988, he married the popular young singer, Olive May Franks (b. 1898/9), a native of Bristol, the daughter of Cardiff businessman George Franks.

Activities of John Fleming

After leaving Nottingham University in 1882, Fleming took the “electronic” position at Edison Electric Light Company, advising on lighting systems and new refurbishments to replace existing systems. In 1884 Fleming joined London in England on the Chair of Electrical Technology, which was the first of its kind.
Although it offered great opportunities, he reminded in his autobiography that the only tool he given a blackboard and a piece of chalk. The Pender Laboratory established at University College London in 1897, and the Fleming Pender Chair took over after paying £ 5000 as a memorial to him and John Pender, the founder of Wireless.

In 1899

In 1899 Guglielmo Marconi, the inventor of radiotelegraphy decided to try transatlantic radio communications. For that, Marconi used a small 200-200 watt transmitter at that time. He contracted with Fleming, a power engineering specialist for radio transmitter design.
Fleming designed the world’s first large radio transmitter, a complex spark transmitter powered by a 25 kW alternator. Powered by a combustion engine at Poldu in Cornwall, UK. On 12 December 1901, which, remitted the first radio transmission broadways the Atlantic.
Although Fleming was responsible for the design, the director of Markey Co. ming Accordingly, the worldwide acclaim that the remarkable success welcomed Marconi, who only credited Fleming with several other Marconi activists, said he had done some work at the “power plant.”
Marconi also forgot his promise to give 500 shares of Marconi stock to Fleming if the project was successful. Fleming was bitter about his treatment. He honored his contract and didn’t say anything about it throughout Marconi’s life, but said after his death in 1937 that Marconi was “extremely malicious.”

In 1904

In 1904, Fleming invented the first thermionic vacuum tube, two electrode diodes, which he called the rocker valve, for which he received a patent on November 16, working for the Transatlantic Radio Enhancement in the Marconi organization.
This known as the flaming valve. The U.S. Supreme Court subsequently invalidated the patent for denying an improper claim, and additionally, retained the patent technology known as art at the time of filing.
Fleming’s diode used for decades on radio receivers and radars until it introduced 50 years later by solid-state electronic technology. In 1906, an amplifier called Lee de Forest Audion in America added a control “grid” to the valve to create a vacuum tube RF detector, leading Fleming to accuse him of infringing patents. De Forest’s tube developed as the first electronic amplifier on the triode.
The triode was instrumental in creating long-distance telephone and radio communications, radar, and primary electronic digital computers (mechanical and electronic-mechanical digital computers already existed using different technologies). The court battle against these patents lasted for years with victory at various stages for both parties. Contributed through Fleming photometry, telegraphy, electronics, wireless and electrical measurement. He coined the term power factor to describe the actual power flowing into the AC power system.

In 1927

In 1927, Fleming retired from University College London when his age 77. He was an active, promising advocate of new television technology, which included serving as the Second President of the Television Society. He killed in 1929 and died in 1945 at his home in Devon, the Civil Mouth.
Electronic communications and his contributions to the radar were crucial in winning the World War. A note on the auspicious anniversary of the invention of the Thermionic Valve. A century ago, in November 1904, Pender Professor John Ambrose Fleming at UCL filed GB 190424850 in Great Britain for a device called the FRS thermionic valve.
When inserted into an electrical circuit tuned together with a galvanometer, it can used as a very sensitive rectifier detector for high-frequency wireless currents, known as radio waves. This was a major step in the ‘wireless revolution’.
Until transistors took over in the early 1970s. They were dominant ant Today. The offspring of the main valve (or vacuum tube) still play an important role in various uses. They are available in the power phase of radio and television transmitters, musical amplifiers (especially electric guitars and bass amplifiers), in some high-end audio amplifiers, as optical and short wavelength radiation detectors and must be “radiation-hard” on sensitive equipment.
In 1941, the London Power Company renamed Fleming a new 1,555 GRT Coastal Caller SS Ambrose Fleming. On November 27, 2004, at the Norman Locker Observatory in Sidmouth. A blue blade unveiled at the Institute of Physics, on the 100th anniversary of the discovery of the thermionic radio valve.

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