Percy Spencer ¿Who was Percy Spencer? The inventor was born on July 9, 1894 in Howland, Maine, he was a smart child, but he left grammar school when he was 12 years old to work in a weaving mill and joined the U.S. Navy at 18 as a radio operator. During his shifts he taught himself calculus and physics from textbooks. ¿What did he do? Spencer began working at Raytheon, using his expertise to rise to success in the radio and vacuum tubes department, It was used as a radar system in World War II to detect enemy planes and submarines, so in 1945, he was researching how to improve the Rytheon company radar's, while he was working with magnetons (devices that transform electrical energy into electro magnetic microwaves) it were used to measure distances, altitudes, directions and speed, but when he was working, the chocolate that he had kept in his pants melted, then he started experimenting with other foods and realized he could cook an egg and make popco...