Radiation Pressure. Pressure of radiant energy on a unit area. The pressure of sunlight on Earth is about 2 Ib. per square mile.
Radio 271 Raker
Radio. General name for methods of signalling or communicating through space by electro-magnetic waves.
Radio Aids. Term that includes all radio signals and emissions that can be used in navigational practice.
Radio Beacon. A radio station which sends out special signals for reception by a ship's radio direction finder, the bearing of the radio beacon being thus obtained.
Radio Compass. Directional radio receiver calibrated to indicate the direction in which a radio wave approaches.
