Original Cavity Magnetron, 1940.
3 4 c m
40cm
actual image size: 32cm x 26cm

Original Cavity Magnetron, 1940.

© Science Museum / Science & Society Picture Library

Description

This was developed by John Randall (1905-1984) and Harry Boot (1917-1983) at Birmingham University. Radars that could produce clear images of distant objects played a decisive part in WW2, and worked by bouncing powerful, ultra-short radio waves off their targets. The cavity magnetron was the first practical device for producing such waves.
 

Image Ref.

10305485
 

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