Forged in the fighting of World War II, the cavity magnetron was the heart of radar signals used to identify attacking German forces. The magnetron itself was truly an international effort ...

On October 8, 1945, Spencer and the team filed for a patent on the technology. It was approved in January 1950, and Raytheon ...

While we now think of a magnetron as a microwave oven component, they are important in many microwave devices including radar. They are interesting because all they can do is oscillate.

Magnetrons cause electric charges to oscillate and emit microwaves — a more powerful form of radiation than the radio waves previously used for radar defences. The post-war period saw a ...

But by 1940, it was the British who had made a spectacular breakthrough: the resonant cavity magnetron, a radar transmitter far more powerful than its predecessors. Pounded by Nazi bombers ...

Today, Percy Spencer's invention and research into microwave technology is still being used as a jumping off point for further research in radar and magnetron technologies. Different wavelengths ...

James Sayers, who was born in Corkey in 1912, joined a team in the Radiation Lab at Berkely, California, which played a part ...