Uncategorized

Group Velocity / Phase Velocity Animation – Case 2: Zero Group Velocity

In this second video of the series, we demonstrate the case where the group velocity is zero while the phase velocity is positive number. The individual wave components comprising the total wave are first shown at the top along with a corresponding “dot” representing the phase velocity of each component.

In the bottom figure, we have the resulting wave that travels along the +x direction with a positive phase velocity but the group velocity remains to be zero. The wave packet envelope is shown in magenta color in dashed lines.

For the other videos in the series, check the below links:
1) Group Velocity larger than Phase Velocity: https://www.youtube.com/watch?v=tlM9vq-bepA

Групповая скорость, Gruppengeschwindigkeit, Voortplantingssnelheid, Velocidad de grupo, Grupa rapido, Vitesse de groupe, Velocità di gruppo, 군속도, מהירות חבורה, ჯგუფური სიჩქარე, 群速度, Gruppefart, Prędkość grupowa, Групова швидкість, 群速度, Vận tốc nhóm, Grupphastighet, Grupinis greitis, Phasengeschwindigkeit, Velocidad de fase, 相速度, Vitesse d’une onde, Velocità di fase, Фазовая скорость, 位相速度

Advertisements

Leave a Reply

Fill in your details below or click an icon to log in:

WordPress.com Logo

You are commenting using your WordPress.com account. Log Out / Change )

Twitter picture

You are commenting using your Twitter account. Log Out / Change )

Facebook photo

You are commenting using your Facebook account. Log Out / Change )

Google+ photo

You are commenting using your Google+ account. Log Out / Change )

Connecting to %s