group velocity in a sentence

Examples

1. This tensor expresses the change in group velocity due to a change in crystal momentum.
2. Consequently, for that wave situation, the group velocity is
3. The phase velocity drops smoothly while the group velocity drops somewhat precipitously towards a minimum.
4. The time-varying amplitude does not propagate at the phase velocity but rather at the group velocity.
5. In general, shorter waves have an eastward group velocity and long waves a westward group velocity.
6. The energy transport velocity is the group velocity.
7. In general, shorter waves have an eastward group velocity and long waves a westward group velocity.
8. However the physically more important group velocity interval is substantially larger ( proportional to ? ).
9. The group velocity is sort of the " average " speed of the whole little pulse.
10. There are two velocities that are associated with waves, the phase velocity and the group velocity.