Once Again: Relativity for Thought Experiments

On Mar 7, 8:12 pm, Tom Roberts wrote:
Alfonso wrote:

The assumption that the same light at the same point in space shall have
the same speed relative to two observers in relative motion is a totally
irrational assumption.

That assumption is not needed to derive the equations of SR. In a modern
derivation it is a CONCLUSION, not an assumption.

Please show how you can derive the Lorentz transform without the
assumption in the invariance of the speed of light.

"Koobee Wublee" wrote in message
...
| On Mar 7, 8:12 pm, Tom Roberts wrote:
| Alfonso wrote:
|
| The assumption that the same light at the same point in space shall
have
| the same speed relative to two observers in relative motion is a
totally
| irrational assumption.
|
| That assumption is not needed to derive the equations of SR. In a modern
| derivation it is a CONCLUSION, not an assumption.
|
| Please show how you can derive the Lorentz transform without the
| assumption in the invariance of the speed of light.
|

sqrt(c^2) = c
c^2/c^2 = 1

1-v^2/c^2 = c^2/c^2 -v^2/c^2
= [c^2-v^2] / c^2
= [(c+v)*(c-v)] / c^2

sqrt(1-v^2/c^2) = sqrt([(c+v)*(c-v)] / c^2)


"We now have to prove that any ray of light, measured in the moving system,
is propagated with the velocity c, if, as we have assumed, this is the case
in the stationary system; for we have not as yet furnished the proof that
the principle of the constancy of the velocity of light is compatible with
the principle of relativity." -- § 3. Theory of the Transformation of
Co-ordinates and Times from a Stationary System to another System in
Uniform Motion of Translation Relatively to the Former -- ON THE
ELECTRODYNAMICS OF MOVING BODIES -- Einstein.
http://www.fourmilab.ch/etexts/einstein/specrel/www/

"But the ray moves relatively to the initial point of k, when measured in
the stationary system, with the velocity c-v" -- § 3. Theory of the
Transformation of Co-ordinates and Times from a Stationary System to another
System in Uniform Motion of Translation Relatively to the Former -- ON THE
ELECTRODYNAMICS OF MOVING BODIES -- Einstein.
http://www.fourmilab.ch/etexts/einstein/specrel/www/

Einstein has to PROVE light's speed is paranormal.

For those morons that don't know what a contradiction is, there are no
contradictions in the speed of light being c and also c-v simultaneously.