- #1
arnesinnema
- 13
- 0
I’ve got a question.
Say we have a medium traveling through a pipe at speed v. The soundspeed of the medium is vs. The speed of the wavefronts to an stationary are approximately v-vs and v+vs when both v and vs are much smaller than the lightspeed c. However what happens when v=c? Do the wavefronts move with apparent speed v-vs and v+0 or do they appear to be frozen i.e. v-0 and v+0.
On a similar note, say an electron is traveling around one of the medium atoms in a plane parallel to the direction of movement of the atom. Say the electron is first placed at the front, can it than move backwards? But will stay there? I.e. it cannot move forwards since than the combined speed (relative to the stationary observer) would exceed the speed of light.
I.e. what happens to the Doppler effect at relativistic speeds?
Admittedly I’m not an expert ;).
Regards Arne Sinnema
Say we have a medium traveling through a pipe at speed v. The soundspeed of the medium is vs. The speed of the wavefronts to an stationary are approximately v-vs and v+vs when both v and vs are much smaller than the lightspeed c. However what happens when v=c? Do the wavefronts move with apparent speed v-vs and v+0 or do they appear to be frozen i.e. v-0 and v+0.
On a similar note, say an electron is traveling around one of the medium atoms in a plane parallel to the direction of movement of the atom. Say the electron is first placed at the front, can it than move backwards? But will stay there? I.e. it cannot move forwards since than the combined speed (relative to the stationary observer) would exceed the speed of light.
I.e. what happens to the Doppler effect at relativistic speeds?
Admittedly I’m not an expert ;).
Regards Arne Sinnema