10 Everyday Objects That Were Originally Invented for War

4. Microwave Ovens: From Radar to Kitchen Staple

The microwave oven is a prime example of serendipitous innovation. During World War II, engineer Percy Spencer was working on radar technology when he noticed that microwaves from an active radar set melted a chocolate bar in his pocket. This discovery led to the development of microwave ovens, which revolutionized cooking by drastically reducing preparation time. Initially used in commercial settings, microwaves became a household staple by the 1970s, showcasing how military research can lead to culinary convenience.