In the year 1945, engineer Percy Spencer was doing a research in radar at the Raytheon Company. He simply stopped for a moment in the front of a magnetron, an electronic vacuum tube that produces high-frequency radio waves. All of a sudden he feels an unusual sensation; he noticed that the chocolate bar in his pocket was melting.
Spencer was curious that’s why he put popcorn kernels close to the magnetron; shortly popcorn was popping out over the lab floor. He then put a raw egg in a container facing the magnetron. The exploding egg splattered a close coworker, verifying that microwaves could very well cook food quickly as well as unconventionally.
Spencer as well as other Raytheon company engineers proceeded to build up the very first microwave oven.
The very first models of Microwave Oven
The very first models (so-called radar ranges), distributed in the market in 1947, weighed 750 pounds and stood almost 6 feet tall. Early microwave ovens were used exclusively in restaurants, railroad cars, and ocean liners--places where large quantities of food had to be cooked immediately.
It turned out years before microwave ovens were small as well as practical enough for home use.