Did you know that the microwave oven was discovered by accident? In 1945, Percy Spencer, an employee of Raytheon Manufacturing Company, realized that his peanut cluster candy bar had begun to melt while he was working with a magnetron. Curious, he decided to test other foods, notably popcorn and an egg. In his experiments, he watched as the microwave energy emitting from the magnetron successfully popped the kernels and caused the egg to explode.
After his experiments with the egg and kernels, Spencer built a metal box into which he fed microwave energy and tested it with more food. He concluded that microwave energy was better at cooking food than the convention oven found in the American home at the time. Following this realization, Spencer filed for a patent, and in 1947, the first commercial microwave oven was tested in a Boston restaurant.