MICROWAVE OVENS

In 1946 Dr. Percy Spencer of the Raytheon Corporation was experimenting with a magnetron (a new type of vacuum tube) when he noticed that the chocolate candy bar in his pocket had melted. He was curious, so he placed some popcorn kernels next to the magnetron and turned it on - the popcorn popped.
After experimenting with various other food items (including an egg that exploded!), he and Ratheon realized they were on to something and continued on to develop the first microwave oven.

The first household microwave ovens called the 'Radarange' went on sale in 1947. They cost almost $3,000 each and were the size of a small refrigerator.

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MICROWAVE OVENS