| 41. | :See Dispersion ( optics ) which has a somewhat understandable explanation, in addition to Phase velocity and Group velocity.
|
| 42. | The phase velocity does not have to exactly equal "'c "'( the universal constant ).
|
| 43. | Moreover, the velocity that must be exceeded is the phase velocity of light rather than the group velocity of light.
|
| 44. | However, as stated above, a superluminal phase velocity cannot be used for faster-than-light transmission of information.
|
| 45. | The phase velocity near the waist exceeds the speed of light in the medium, just as it can in a waveguide.
|
| 46. | The reverse of the electromagnetic wave, characterized by an antiparallel phase velocity is also an indicator of negative index of refraction.
|
| 47. | Whereas the first group has a zero-valued phase velocity, the second group has a finite, nonzero phase velocity.
|
| 48. | Whereas the first group has a zero-valued phase velocity, the second group has a finite, nonzero phase velocity.
|
| 49. | So the phase velocity formula in the basic Kolsky model is modified by using the highest frequency w h as a reference.
|
| 50. | One can identify a terrestrial Rossby wave as its phase velocity, marked by its wave crest, always has a westward component.
|
