JOHN AMBROSE FLEMING (1849-1945)

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 ©

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

diagram of the thermionic valve invented by 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


 
 
 
 
 
 
 
 
 
 
 
 

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