Fun fact: the cavity magnetron found in micraowaves was one of the most secret inventions of WW2, and guaranteed victory for the Allies. It was invented to gen

Fun fact: the cavity magnetron found in micraowaves was one of the most secret inventions of WW2, and guaranteed victory for the Allies. It was invented to generate 10 cm waves in a compact package, which are ideal for radar. Although Germans and Japanese did early research on the magnetron, the Allies leap-frogged them. The Americans had a university campus (around 4,000 staff) design production units for literally everything larger than a jeep that moved . A Brit hand-delivered their prototype to the US, and the US solved some issues and productionized it. Because the magnetron is made out of a block of metal, there was no way to destroy it after an airplane accident. But the Germans weren't able to adapt it, and admitted it was beyond their understanding at the time. Ironically one of Germany's most advanced signals airplanes was captured just off a beach in England, but politicking between the navy and army meant it was left in seawater until it completely corroded. (You can identify these special signals planes by numerous antennae mounted on the nose.)