GENERAL KNOWLEDGE

Detailed explanation-1: -Spencer and Raytheon put much effort into developing the microwave oven to be used for cooking purposes and filed for a patent on October 8, 1945. He was later awarded the patent on January 24, 1950. The first commercial microwave oven was called “Radarange, ‘’ marketed in 1947.

Detailed explanation-2: -In 1945, Spencer created a device to cook food using microwave radiation.

Detailed explanation-3: -The microwave was invented in 1945 by Raytheon engineer Percy Spencer, as evidenced by his patent for a “Method of treating foodstuffs.”