Microwave oven magnetron. This cavity magnetron essentially converts electrical energy into microwave energy. It consists of a cathode (hot filament Stock Photo - Alamy
Radar and the development of the cavity magnetron – Engineers at War
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80 Years of Cavity Magnetron – Newcomen.com
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Magnetron
microwave - How is it possible that emitting electrons create alternating charges in the cavities of a magnetron? - Electrical Engineering Stack Exchange
1940s: The Cavity Magnetron - Science Museum Blog
Magnetron - Radartutorial
From World War II Radar to Microwave Popcorn, the Cavity Magnetron Was There - IEEE Spectrum