Re: The problem of relativistic synchronisation

Le 05/09/2024 à 14:24, "Paul.B.Andersen" a écrit :

Den 05.09.2024 01:23, skrev Richard Hachel:

 Vo=0.8c
 Vapp=Vo/(1+cosµ.Vo/c)
 Vapp'=(4/9)c
 Vapp"=4c
 R.H.

 BTW, your equation above is wrong.
 It should be:
  Vapp = v⋅sin(μ)/(1 - (v/c)⋅cos(μ))
 where μ is the angle between the observed object's
velocity and the line of sight.
 That is because we can only observe the transverse
component of the object's velocity.
 If the object is coming right at us, μ = 0⁰, and Vapp = 0.

What do you say, Paul? 

Note that v_app > c when v > c/(sin(μ)+cos(μ))

 What's the matter with you?
Are you drunk, or just insane?
R.H.