A microwave oven is one of the most widely used kitchen equipment in the world. The history of microwave dates back to 1946. It was invented by an engineer named Spencer who was an employee of Raytheon Corporation. Spencer was involved with research in magnetrons. Its discovery was a by-product of another idea that was used in the warfare. The idea came as a result of research into radar technology using magnetrons. Spencer had a candy bar in his pocket in the laboratory and he realized later that it had melted. His investigations revealed that the candy bar was Continue reading...