Re: Relativism Killer

Den 12.07.2025 22:00, skrev LaurenceClarkCrossen:

On Sat, 12 Jul 2025 9:41:17 +0000, Paul.B.Andersen wrote:
 

>
The "speed of light" is the speed measured by an observer,
it is the speed relative to the observer.
So how do you imagine that the speed relative to the observer
could "include the speed of the observer"?
What "speed of the observer" are you referring to?
>
The point is that it is experimentally confirmed that all
observers will measure the same speed of light, even when
the observers are moving relative to each other.
>
That means that the speed of light is invariant, the same
in all frames of reference.
Or as you put it: "the observer finds the speed of light
relative to him to be c even if he is moving towards
or away from the source." (the second postulate of SR).
>
Experimental evidence trumps your opinion which
probably is that the speed of light is c only in
the rest frame of the source.
>

When the source of a wave changes speed, its frequency changes, but not
its speed. When the observer's speed changes, the wave's frequency
changes, proving that the relative speed of the wave has changed. To
claim that the speed of the observer does not affect the relative speed
is nonsense. Stupid, Ignorant, irrational nonsense.

Do you never read what you are responding to?
Repeat:
The speed of light is invariant so any inertial observer
will always measure the speed of light to be c.
If the observer changes his state of motion by accelerating
for some time, and then be inertial again, he will still
measure the speed of light to be c.
The Doppler shift depends only on the relative speed
observer-source. So if the source _or_ the observer accelerate for
some time and then became inertial, the Doppler shift will change,
but the speed of light is still c.
Remember:
Experimental evidence trumps your opinion.
--
Paul
https://paulba.no/