Continuous Wave

A continuous wave or continuous waveform (CW) is an electromagnetic wave of constant amplitude and frequency; and in mathematical analysis, of infinite duration. Continuous wave is also the name given to an early method of radio transmission, in which a carrier wave is switched on and off. Information is carried in the varying duration of the on and off periods of the signal, for example by Morse code in early radio. In early wireless telegraphy radio transmission, CW waves were also known as "undamped waves", to distinguish this method from damped wave transmission.

Read more about Continuous Wave:  Radio, Laser Physics

Famous quotes containing the words continuous and/or wave:

    The habit of common and continuous speech is a symptom of mental deficiency. It proceeds from not knowing what is going on in other people’s minds.
    Walter Bagehot (1826–1877)

    Through this broad street, restless ever,
    Ebbs and flows a human tide,
    Wave on wave a living river;
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    Toiler, idler, slave and master, in the same quick current glide.
    John Greenleaf Whittier (1807–1892)