Waves from moving sources
18.1 Waves from slowly moving sources
In our analysis so far, we have assumed all detectors, interfaces and boundaries, the centres of oscillation of sources and the medium in which waves propagate to be stationary. While such situations may indeed be considered the most common, or at least the most fundamental, they miss some important and fascinating physics, from the Doppler effect and shock waves to the wedged shape of a ship’s wake and the Čerenkov radiation from quickly moving charged particles. To explore some of these phenomena we draw together Huygens’ general treatment of wave propagation and some specific details of propagation mechanisms and characteristics.
18.1.1 The Doppler effect
We are all familiar ...