amplitude

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Amplitude
For quantum-mechanical amplitude, see probability amplitude. For the video game of the same name, see Amplitude (video game).The amplitude is a nonnegative scalar measure of a wave's magnitude of oscillation, that is, the magnitude of the maximum disturbance in the medium during one wave cycle.Sometimes this distance is called the peak amplitude, distinguishing it from another concept of amplitude, used especially in electrical engineering: the RMS or root mean square amplitude, defined as the square root of the temporal mean of the square of the vertical distance of this graph from the horizontal axis. The use of peak amplitude is unambiguous for symmetric, periodic waves, like a sine wave, a square wave, or a triangular wave. For an asymmetric wave (periodic pulses in one direction, for example), the peak amplitude becomes ambiguous because the value obtained is different depending on whether the maximum positive signal is measured relative to the mean, the maximum negative signal is measured relative to the mean, or the maximum positive signal is measured relative the maximum negative signal (the peak-to-peak amplitude) and then divided by two.
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Amplitude
En physique classique, on nomme amplitude la mesure scalaire (une coordonnée) d’un nombre positif caractérisant l’ampleur de l’oscillation d’une onde par rapport à sa valeur moyenne.En mécanique quantique, on nomme amplitude un vecteur composé d'un module et d'une phase, qui peut être représenté par un nombre complexe (deux coordonnées). Le carré du module de cette amplitude est assimilable grosso modo à une probabilité de détection de la particule en un endroit donné.
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Amplitude
Die Amplitude ist die physikalische Bezeichnung für die maximale Auslenkung einer Schwingung bzw. einer Welle aus der Ruhelage. Bei idealen periodischen Schwingungen (zum Beispiel sinusförmig, rechteckförmig, dreieckförmig, sägezahnartig) ist die Amplitude konstant. Bei nichtperiodischen Schwingungen kann sich die Amplitude ändern. Bei gedämpften Schwingungen nimmt die Amplitude in Abhängigkeit von der Zeit ab.
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Amplituda
Amplituda – nieujemna wartość określająca wielkość przebiegu funkcji okresowejAmplituda A w przebiegach sinusoidalnych jest maksymalną wartością tego przebiegu: (1)W przypadku funkcji ze składową stałą, amplituda dotyczy tylko części sinusoidalnej: (2)
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Ampiezza
L'ampiezza, in fisica, è la massima variazione di una grandezza in un'oscillazione periodica.Nell'equazione semplice dell'onda
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