TERMIUM Plus®

The Government of Canada’s terminology and linguistic data bank.

VITESSE GROUPE [2 records]

Record 1 2013-06-20

English

Subject field(s)
  • Radio Waves
  • Physics
CONT

... groups of waves comprising a limited range of frequencies travel at a velocity called the group velocity, different from the phase velocity.

CONT

Group velocity differs from the steady state velocity of a sinusoidal wave only when the latter varies with frequency; the group velocity as thus defined is equal to the first derivative of the frequency with respect to the reciprocal of the wavelength.

OBS

group velocity; envelope velocity: terms standardized by the International Electrotechnical Commission (IEC).

French

Domaine(s)
  • Ondes radioélectriques
  • Physique
DEF

Vitesse de déplacement d'un groupe d'ondes dont la célérité suit la même loi en fonction de la fréquence.

OBS

La vitesse de groupe est la dérivée de la pulsation par rapport au nombre d'ondes.

OBS

vitesse de groupe : terme normalisé par la Commission électrotechnique internationale (CEI).

Spanish

Campo(s) temático(s)
  • Ondas radioeléctricas
  • Física
DEF

Velocidad a la que se desplazan los batimientos producidos por la superposición de dos o más ondas planas sinusoidales, de frecuencias poco diferentes, que se propagan libremente en la misma dirección.

OBS

La velocidad de grupo, así definida, es igual a la derivada de la frecuencia respecto a la inversa de la longitud de onda.

OBS

La velocidad de grupo difiere de la velocidad de fase en un medio en que ésta varía en función de la frecuencia.

Save record 1

Record 2 2001-09-25

English

Subject field(s)
  • Fluid Mechanics and Hydraulics (Physics)

French

Domaine(s)
  • Mécanique des fluides et hydraulique (Physique)
DEF

Vitesse de propagation d'un train de houle ou de vagues.

Spanish

Campo(s) temático(s)
  • Mecánica de fluidos e hidráulica (Física)
Save record 2

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