Image: Dopplereffectsourcemovingrightatmach1.0

Description: Now the source is moving at the speed of sound in the medium (vs = c, or Mach 1). assuming the speed of sound in air at sea level is about 330 m/s . The wave fronts in front of the source are now all bunched up at the same point. As a result, an observer in front of the source will detect nothing until the source arrives where f=(c+vrc−vs)f0=infinityHz{\displaystyle f=\left({\frac {c+v_{r}}{c-v_{s}}}\right)f_{0}=infinityHz\,}. An observer behind the source will detect f=(c−vrc+vs)f0=0.5f0{\displaystyle f=\left({\frac {c-v_{r}}{c+v_{s}}}\right)f_{0}=0.5f_{0}\,}.
Title: Dopplereffectsourcemovingrightatmach1.0
Credit: Own work
Author: Lookang many thanks to Fu-Kwun Hwang and author of Easy Java Simulation = Francisco Esquembre
Usage Terms: Creative Commons Attribution-Share Alike 3.0
License: CC BY-SA 3.0
License Link: https://creativecommons.org/licenses/by-sa/3.0
Attribution Required?: Yes