continuous wave - définition. Qu'est-ce que continuous wave
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Qu'est-ce (qui) est continuous wave - définition

METHOD OF RADIO TRANSMISSION, IN WHICH A SINUSOIDAL CARRIER WAVE IS SWITCHED ON AND OFF. INFORMATION IS CARRIED IN THE VARYING DURATION OF THE ON AND OFF PERIODS OF THE SIGNAL, E.G. BY MORSE CODE
Continous wave; Continuous-wave; Continuous Wave; Morse codewave; Continuous-wave operation; Key click; Continuous waveform; Interrupted continuous wave
  • A commercially manufactured paddle for use with electronic keyer to generate Morse code

continuous wave         
<communications> (CW) A term from early radio history, when the spark gap method of transmission was replaced by vacuum-tube oscillators. A spark gap initiates a ringing, damped sinusoidal wave in a tuned circuit consisting of an inductor and capacitor. The energy in this circuit is constantly changing between the capacitor's electrostatic field and the inductor's magnetic field. The energy is then coupled, loosely (so as not to dampen the wave too quickly), to the radiating antenna. In contrast, a vacuum-tube oscillator constantly adds energy to the tuned circuit, compensating for the amount coupled to the antenna, and the transmitted energy or "wave," is therefore "continuous". Many (especially radio amateurs) continue to understand "CW" to mean transmission by means a signal of a single frequency which is either on or off (e.g. Morse code), as opposed to a carrier which varies continuously in amplitude, frequency or phase. Some would even call the former "unmodulated" even though turning on and off is actually an extreme form of amplitude modulation. (1995-03-15)
Continuous wave         
A continuous wave or continuous waveform (CW) is an electromagnetic wave of constant amplitude and frequency, typically a sine wave, that for mathematical analysis is considered to be of infinite duration. It may refer to e.
Continuous function         
  • The graph of a [[cubic function]] has no jumps or holes. The function is continuous.
  • 1=exp(0) = 1}}
  • section 2.1.3]]).
  • 1=''ε'' = 0.5}}.
  • Riemann sphere]] is often used as a model to study functions like the example.
  • The graph of a continuous [[rational function]]. The function is not defined for <math>x = -2.</math> The vertical and horizontal lines are [[asymptote]]s.
  • For a Lipschitz continuous function, there is a double cone (shown in white) whose vertex can be translated along the graph, so that the graph always remains entirely outside the cone.
  • oscillation]].
  • The sinc and the cos functions
  • Point plot of Thomae's function on the interval (0,1). The topmost point in the middle shows f(1/2) = 1/2.
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FUNCTION SUCH THAT THE PREIMAGE OF AN OPEN SET IS OPEN
Continuity property; Continuous map; Continuous function (topology); Continuous (topology); Continuous mapping; Continuous functions; Continuous maps; Discontinuity set; Noncontinuous function; Discontinuous function; Continuity (topology); Continuous map (topology); Sequential continuity; Stepping Stone Theorem; Continuous binary relation; Continuous relation; Topological continuity; Right-continuous; Right continuous; Left continuous; Left-continuous; C^1; Continuous fctn; Cts fctn; E-d definition; Continuous variation; Continuity space; Continuous space; Real-valued continuous functions; Left-continuous function; Right-continuous function; Left- or right-continuous function; Continuity at a point; Continuous at a point; Continuous extension
In mathematics, a continuous function is a function such that a continuous variation (that is a change without jump) of the argument induces a continuous variation of the value of the function. This means that there are no abrupt changes in value, known as discontinuities.

Wikipédia

Continuous wave

A continuous wave or continuous waveform (CW) is an electromagnetic wave of constant amplitude and frequency, typically a sine wave, that for mathematical analysis is considered to be of infinite duration. It may refer to e.g. a laser or particle accelerator having a continuous output, as opposed to a pulsed output.

By extension, the term continuous wave also refers to an early method of radio transmission in which a sinusoidal carrier wave is switched on and off. This is more precisely called interrupted continuous wave (ICW). 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 signals produced by earlier spark gap type transmitters.

Exemples du corpus de texte pour continuous wave
1. Benzi Lieberman, head of the Council of Jewish Communities of Judea, Samaria and the Gaza Strip responded to Monday‘s attack÷ "Today‘s attack is part of a continuous wave of terror created by the weakness portrayed by the government of Israel.
2. Israel‘s measures are "geared toward preventing the continuous wave of terror being launched at us, including the incessant rocket fire at our towns and cities," government spokesman David Baker said.