Early fire-control radars for Naval Vessels

For a number of years before the war a very intensive development effort was under way in the Army and Navy laboratories, and in several commercial laboratories, on the application of radio methods to the location of objects at a distance. The equipment which resulted was eventually called “Radar” equipment by the Navy and this term is now almost universally used. The urgent needs of the war have resulted in the very rapid development and extensive application of this new science during the last few years.