Google Classroom
GeoGebraGeoGebra Classroom

A standing wave viewed from another reference frame

Author:
robdjeff
An electromagnetic standing wave is the linear superposition of two plane waves of similar amplitude and frequency, travelling in opposite directions. However, if an observer, travelling with uniform velocity with respect to the rest frame, observes the radiation they see something completely different. One wave is boosted and blue-shifted, the other is inverse boosted and redshifted. The combination is not a standing wave.