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Rayteon Magnetron Tubes
Raytheon starts mass producing magnetron tubes for radar defense on the Allies. -
Percy Spencer Investigates Radio Wave Heating Food
Percy Spencer is about to go bankrupt fbecause WWII has ended and the demand for magnetron tubes is really low. He notices that while standing near an active magnetron tube that the candy bar in his pocket melted. He experiments with different foods and makes the first microwaved popcorn. Spencer then created the first true microwave oven by attaching a high density electromagnetic field generator to an enclosed metal box. Raytheon patented the microwave oven on Oct. 8, 1945. -
Microwaves in Homes
Raytheon licenses its patents for a home-use microwave oven that was first introduced by Tappan in 1955, but these units were still too large and expensive for general home use. -
Amana Corporation Makes Popular Microwave
The countertop microwave oven was first introduced in 1967 by the Amana Corporation, and their use has spread into commercial and residential kitchens around the world. It was the first popular microwave designed for home use. -
Modern Microwave
Microwaves are even smaller and are more enery effecient as science has grown in the passing years. Microwaves are so common in American households that 95% of residents have them.
