Noun
An electromagnetic wave of constant amplitude and frequency, typically a sine wave, that for mathematical analysis is considered to be of infinite duration.
(radio, historical, uncountable) An early method of radio transmission in which a sinusoidal carrier wave is switched on and off, and information is carried in the varying duration of the on and off periods.
Source: en.wiktionary.orgContinuous wave (CW) is on-and-off keying of a carrier, used only for Morse code communications. Source: Internet
Continuous wave (CW) radar One way to obtain a distance measurement is based on the time-of-flight : transmit a short pulse of radio signal (electromagnetic radiation) and measure the time it takes for the reflection to return. Source: Internet
Continuous wave carbon dioxide lasers are still used to remove moles and other skin issues though. Source: Internet
Continuous wave operation Some applications of lasers depend on a beam whose output power is constant over time. Source: Internet