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Microwave ovens were invented in the 1940s. Specifically, the invention of the microwave oven dates back to 1945, when Percy Spencer, a radar engineer at work, accidentally discovered the heating effect of microwave radiation on food. He noticed that when he stood next to a moving magnetron, the chocolate bar in his pocket melted. This discovery sparked his interest, and he began investigating how microwave radiation could be used to heat food.
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After years of research and improvement, Percy Spencer patented the microwave oven in 1947 and introduced the first commercial microwave oven in the same year. At first, microwave ovens were mainly used in commercial and military fields, and it was not until the 1960s that they gradually entered the home.
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The invention of the microwave oven has greatly changed the way people cook, making heating food faster and more convenient. Today, microwave ovens have become one of the common kitchen appliances in homes and offices.
The microwave oven was invented by Spencer, an American radar engineer.
In 1945, Spencer, a radar engineer in the United States, found that the chocolate in his pocket melted in the process of doing experiments, at first thought that it was caused by his own body temperature. Later, it was found that the melting of the chocolate was caused by the magnetron on the radar device.
So Dr Spence built a metal box with an opening that fed microwave-energy into it. When the food inside was filled with microwave-energy, the temperature of the food rose rapidly, and a primitive microwave oven was born.
Microwave ovens first appeared in the 1940s, invented by Spencer Silver, an engineer at the Raytheon Company. He was working on radar equipment when he accidentally discovered that microwave radiation could heat food. Hertz's discovery laid the foundation for the microwave oven.
Then Percy Spencer, another Raytheon engineer, further developed Hertz's discovery and built the first microwave oven in 1947. The advent of the microwave oven dramatically changed the way people cooked and quickly became an essential kitchen device in modern homes.