Robert Watson-Watt rides the waves The British physicist who became known as the ‘inventor of radar’. Robert Watson-Watts. Credit: Wikimedia Commons. In April 1935, British physicist Robert Watson-Watt was granted a patent for his design of a radio system for detecting aircraft in flight. The system was described as Radio Detection And Ranging, and because of it, Watson-Watt became known as the inventor of RADAR. Of course, the title “inventor of radar” is more of an honorific than a factual description. Indeed, J. A. Ratcliffe’s biographical memoir of Watson-Watt, written for Brita...