Re: lorenz transformation and spped of light


"PD" <TheDraperFamily@xxxxxxxxx> escreveu na mensagem
news:1190313918.758640.271960@xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
On Sep 20, 9:18 am, "JM Albuquerque" <jmDO...@xxxxxxx> wrote:
"Jeckyl" <no...@xxxxxxxxxxx> escreveu na
mensagemnews:13f3hjam48l0218@xxxxxxxxxxxxxxxxxxxxx

"Chrisd5000rouge" <christian.d...@xxxxxxxxxxx> escreveu na mensagem
news:1190239831.214123.110060@xxxxxxxxxxxxxxxxxxxxxxxxxxxxxx

Two spacecrafts running at opposite directions at 0.8c each, the
lorenz transformation says that their relative speed perception is u=
(0.8c+0.8c)/(1+(0.8c*0.8c/c²))= 0.975c.

It not a "perception" .. it IS their relative speed (ie the speed of
the
second spaceship in the iFoR of the first). SR doesn't talk about
optical
illusions :)

That's completely nonsense.

Of course it's a perception, since the problem starts saying:
Two spacecrafts running at opposite directions at 0.8c each.
Why cannot the reality be that of two spacecrafts running at
opposite directions at 0.8c each?

We build two spacecrafts, we place then back-to-back,
and we fire them with a program that guarantees that in
a given time and a given distance, both will be running
at 0.8c.

So we know what the reality is.


That's what it is in one frame of reference. What you apparently
assume, but haven't convincingly argued is:
- that if they have a relative velocity of 1.6 c in one frame of
reference, then this must be the relative velocity in any other frame
of reference;

No.
One has to account for direction.
I cannot say they have a relative velocity of 1.6c, because I'm
in the center and they got opposite directions.
I cannot sum their velocities because the right result will be:
0.8c + (-0.8c) = 0


and/or
- this is the frame of reference that determines what *reality* is,
and if other frames of reference do not result in the same number,
then those cannot be ascribed to *reality*.

Many realities I presume.
Each observer has its own "reality" with it.
And we cannot got out of that circular reasoning to say
who's got the supreme reality.


.

Relevant Pages

  • SR R.I.P.
    ... > Experiments are the connectors to reality. ... 'empirical' Al, you are not yet advanced even as far as Relativity, ... frame of reference is seen as extended or extrapolated, ...
    (sci.physics)
  • SR R.I.P.
    ... > Experiments are the connectors to reality. ... 'empirical' Al, you are not yet advanced even as far as Relativity, ... selected frame of reference is seen as extended or extrapolated, ...
    (sci.physics.relativity)
  • Re: lorenz transformation and spped of light
    ... Two spacecrafts running at opposite directions at 0.8c each. ... Why cannot the reality be that of two spacecrafts running at ... then this must be the relative velocity in any other frame ...
    (sci.physics)
  • Re: SR R.I.P.
    ... >> Experiments are the connectors to reality. ... > 'empirical' Al, you are not yet advanced even as far as Relativity, ... > selected frame of reference is seen as extended or extrapolated, ... > frame of reference. ...
    (sci.physics.relativity)
  • Re: lorenz transformation and spped of light
    ... lorenz transformation says that their relative speed perception is u= ... So we know what the reality is. ... That's what it is in one frame of reference. ...
    (sci.physics)