John Bertrand Johnson
See also: Johnson
John Bertrand Johnson (1887-1970) is a physicist and American engineer in electricity of Swedish origin. He was the first to explain a fundamental source of noise in electronics, the thermal Bruit, which had with the passage of electric current in a discussion thread.
In 1928, then in the Laboratories Beautiful, it off publishes an article entitled Thermal Agitation Electricity in Conductors ( thermal Agitation of electricity in the drivers ). In Telecommunications, or in other electronic systems in general, the thermal Bruit (or “Johnson noise”) is the noise produced by the thermal agitation of the electrons in a driver. The articles of Johnson show that statistical fluctations of the electric charge take place in all the drivers, which has as a consequence the appearance of a Potential difference between the ends of the driver.
See too
- thermal Noise
- Physical statistics
- History of thermodynamics and statistical mechanics
References
- J.B. Johnson, " Thermal Agitation off Electricity in Conductors ". The American Physical Society, 1928.
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