JOHN AMBROSE FLEMING (1849-1945)

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1890 – England

‘Fleming’s right-hand and left-hand rules are used for the relationship between the directions of current flow, motion and magnetic field in electric motors and dynamos respectively’

photo of John Ambrose Fleming ©

Photographs of the Oscillation Valves first employed by Dr. J.A. Fleming in October, 19041

Oscillation Valves first employed by Dr. J.A. Fleming in October, 1904

diagram of the thermionic valve invented by Ambrose Fleming

 
 
 
 
 
 
 
 
 
 
 
 

The rules are named after the inventor of the thermionic valve who devised them.

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2 thoughts on “JOHN AMBROSE FLEMING (1849-1945)”

  1. Pingback: NIKOLA TESLA (1856-1943) | A History of Science

  2. Pingback: THOMAS ALVA EDISON (1847-1931) | A History of Science

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