@michele_laino

Question

@michele_laino

astrophysics · Answer

I have a relativity question, so three radio transmitters A, B, and C, each transmitting at a frequency $v_0$ in its own rest frame, are in motion as shown. |dw:1447499851645:dw| this requires doppler effect, but I don't quite understand the relativistic version of it.

So the question is what is the frequency of B's signal as received by C?

astrophysics · Answer

I should've probably posted this in physics section haha, oh well

astrophysics · Answer

Yeah it's weird notation for frequency the book is pretty old

ganeshie8 · Answer

B is at rest 
A and C are moving with constant velocity is it ?

astrophysics · Answer

those are velocities in the diagram

astrophysics · Answer

yes

astrophysics · Answer

http://hyperphysics.phy-astr.gsu.edu/hbase/relativ/reldop2.html

kainui · Answer

$\nu$ is pretty common notation for frequency, the Greek letter nu, probably best recognized from: $$E=h \nu = \hbar \omega$$

astrophysics · Answer

Yeah lol

michele_laino · Answer

we have to apply the Lorentz transformation along the $x-$axis:
|dw:1447500110613:dw|