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Area Physics for electrotechnology / Space and time

IEV ref113-01-42

Symbol
n

en
rotational frequency
speed of rotation
magnitude of the angular velocity ω divided by the angle 2π, thus n = |ω|/2π

NOTE 1 The rotational frequency is also the derivative of the absolute value of angle of rotation φ with respect to time t, divided by 2π, thus n= 1 2π d|φ| dt MathType@MTEF@5@5@+= feaagKart1ev2aqatCvAUfeBSjuyZL2yd9gzLbvyNv2CaerbbjxAHX garuavP1wzZbItLDhis9wBH5garmWu51MyVXgarqqtubsr4rNCHbGe aGqk0di9Wr=fpeei0di9v8qiW7rqqrVepeea0xe9LqFf0xc9q8qqaq Fn0lXdHiVcFbIOFHK8Feea0dXdar=Jb9hs0dXdHuk9fr=xfr=xfrpe WZqaaeaaciWacmGadaGadeaabaGaaqaaaOqaaKqzGeGaamOBaiabg2 da9OWaaSaaaKqzGeqaaKqzaeGaaGymaaqcLbsabaqcLbqacaaIYaac daqcLbsacqWFapaCaaGcdaWcaaqcLbsabaqcLbqacaqGKbWcdaabda qcLbqabaqcLbsacqaHvpGzaOGaay5bSlaawIa7aaqcLbsabaqcLbqa caGGKbqcLbsacaWG0baaaaaa@4C9E@ .

NOTE 2 The coherent SI unit of rotational frequency is second to the power minus one, s–1. The units revolution per second, symbol r/s, and revolution per minute, symbol r/min, are widely used in specifications for rotating machines.


fr
fréquence de rotation, f
vitesse de rotation, f
quotient de la norme de la vitesse angulaire ω par l’angle 2π, soit n = |ω|/2π

NOTE 1 La fréquence de rotation est aussi le quotient par 2π de la dérivée de la valeur absolue de l’angle de rotation φ par rapport au temps t, soit n= 1 2π d|φ| dt MathType@MTEF@5@5@+= feaagKart1ev2aqatCvAUfeBSjuyZL2yd9gzLbvyNv2CaerbbjxAHX garuavP1wzZbItLDhis9wBH5garmWu51MyVXgarqqtubsr4rNCHbGe aGqk0di9Wr=fpeei0di9v8qiW7rqqrVepeea0xe9LqFf0xc9q8qqaq Fn0lXdHiVcFbIOFHK8Feea0dXdar=Jb9hs0dXdHuk9fr=xfr=xfrpe WZqaaeaaciWacmGadaGadeaabaGaaqaaaOqaaKqzGeGaamOBaiabg2 da9OWaaSaaaKqzGeqaaKqzaeGaaGymaaqcLbsabaqcLbqacaaIYaac daqcLbsacqWFapaCaaGcdaWcaaqcLbsabaqcLbqacaqGKbWcdaabda qcLbqabaqcLbsacqaHvpGzaOGaay5bSlaawIa7aaqcLbsabaqcLbqa caGGKbqcLbsacaWG0baaaaaa@4C9E@ .

NOTE 2 L’unité SI cohérente de fréquence de rotation est la seconde à la puissance moins un, s–1. Les unités «tour par seconde», symbole r/s, et «tour par minute», symbole r/min, sont utilisés largement pour des spécifications de machines tournantes.


ar
قيمة سرعة الدوران (الحركة الدائرية)
تردد الدوران

de
Rotationsfrequenz, f
Drehfrequenz, f

es
frecuencia de rotación
velocidad de rotación

fi
kierrostaajuus

it
frequenza di rotazione
velocità di rotazione

ja
回転周波数

pl
częstotliwość obrotów
prędkość obrotowa

pt
frequência de rotação

sv
varvfrekvens
rotationsfart

zh
转速
转动频率

Publication date: 2011-04
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