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Born | 29 November 1849 Lancaster |
Died | 18 April 1945 | Age 95 Sidmouth |
Science
John Ambrose Fleming 1904
Sir John Ambrose Fleming ( 1849 – 1945) born in Lancaster, Lancashire, England invented the first thermionic valve or vacuum tube, or just valve as it was known. He received a patent on November 16, 1904.
What they do

Vacuum tubes or thermionic valves are based around the concept of thermionic emission. Using two electrodes enables diodes to be made that can rectify signals.
New Dawn

The vacuum tube brought the dawn of the age of electronics. Its invention enabled the wireless technology of the day to move forward. The valve was pivotal in laying the foundations of what we call electronics technology today.
This invention made possible
Radio
Television
Radar
Sound recording and reproduction
Telephone networks,
Analog and Digital computers
Television
Radar
Sound recording and reproduction
Telephone networks,
Analog and Digital computers