Time and again he sent messages on 600, a radio wave length reserved to coast and ship service alone.
Human thought is an etheric wave of the same essential nature as the radio wave.
There was a simple mechanism in the cartridge that allowed us to release the spores by a radio wave from our ship.
|radio wave |
A very low frequency electromagnetic wave (from roughly 30 kilohertz to 100 gigahertz). Radio waves are used for the transmission of radio and television signals; the microwaves used in radar and microwave ovens are also radio waves. Many celestial objects, such as pulsars, emit radio waves. See more at electromagnetic spectrum.