The British government asked him if radio waves could destroy enemy planes. Instead, he showed that they could determine the distance of aircraft, creating the first practical radar system.

• 英国政府问他无线电波是否能摧毁敌人的飞机。相反,他证明了无线电波可以确定飞机的距离,第一套实用的雷达系统由此诞生。