A note on group velocity
- 27 June 1977
- journal article
- Published by The Royal Society in Proceedings of the Royal Society of London. Series A. Mathematical and Physical Sciences
- Vol. 354 (1679) , 533-535
- https://doi.org/10.1098/rspa.1977.0082
Abstract
By a simpler proof than was previously available (see, for example Rayleigh 1877, Lighthill 1960) it is shown that the mean energy flux velocity vector for a single infinite train of elliptically polarized harmonic small amplitude plane waves propagating in a homogeneous conservative, dispersive system is equal to the group velocity.Keywords
This publication has 1 reference indexed in Scilit:
- On Progressive WavesProceedings of the London Mathematical Society, 1877