The microwave was invented by American, Perry Spencer, who worked for the company Raytheon, which produced weapons electronics. It began one day in 1945. when he had some chocolate that melted. He got an idea to make a device which will work by a radar system. It was supposed to send microwaves with a 2.5 gigahertz, so he tested the subsequent apparatus by placing a bag of popcorn on the side, which resulted that the popcorn was popped.
Spencer found out that water, carbohydrates and fat was rung, and consequently developed heat, around 2.5 gigahertz. After some time of evolution Raytheon could in 1947 present the first microwave, the company patented Raydarange. The microwave had a price of $ 5000, spent 3000 W and was 1.7 m high. It was also water cooled and weighed 340 kg. For starters it was not used in homes, but partly in trains and luxury liners.
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