Radar is a means for detecting the position, movement, and nature of a remote object through radio waves reflected from its surface. During the 1930s, several countries independently developed the technology for military use, exploiting radar’s capacity to detect aircrafts and ships. One of the earliest practical radar systems was devised by Sir Robert Watson-Watt, a Scottish physicist and descendent of the inventor of the steam engine, James Watt. What was the “Battle of the Beams”? Discuss