Radar

In 1888, German physicist Heinrich Rudolf Hertz discovered electromagnetic radiation. His experiments with radio waves formed the basis of what would become one of the most important warfare technologies of the twentieth century. Discover the history behind radar technology, from Hertz's early experiments with radio waves to Christian Hulsmeyer's historic 1904 invention of the "telemobiloscope," which was designed to prevent the collision of ships at sea. During World War II, radar (originally an acronym for radio detection and ranging) not only helped win the famous Battle of Britain, but also brought Allied women into the frontlines for the first time as they worked to track and destroy Hitler's Luftwaffe.