Re: Light Speed Test versus Special Relativity

From: George Dishman (george_at_briar.demon.co.uk)
Date: 03/23/05 

Date: Wed, 23 Mar 2005 22:35:29 -0000

"Stan Byers" <sbyers11@comcast.net> wrote in message
news:74KdnV810aNsKNzfRVn-1A@comcast.com...
>
> Think of the Io eclipse events as an audible clock ticking. When the Earth
> has no relative speed in relation to Jupiter there is an "at rest rate".
> When the Earth retreats from Jupiter the Doppler effect reduces the rate.
> SR
> says the relative speed of sound remains the same after you start
> retreating.

No it doesn't. SR says an aether is unnecessary.
However, it does say the speed will be c if
measured in an inertial reference frame, and you
can use a heliocentric coordinate system for that.
As the Earth moves in that frame, the motion
causes a Doppler shift.

> Now if the speed of sound stayed the same,... the moving Earth
> would hear the "at rest rate" while it was retreating.

When you hear a train whistle change note as
different to the "rest rate" because of the Doppler
effect, it is due to the speed of the train or the
observer, not a change in the speed of sound. No
matter how often you repeat these statements, they
remain wrong. What happens is that the rate drops
and the wavelength increases. This is the third
time I have pointed out that error Stan, don't you
think you should stop repeating it?

> That is exactly why
> SR is impossible. It SR were true there would be no 1003 sec delay as
> observed by Roemer. As long as the 1003 sec delay exists since 1676
> AD,...SR is impossible.

Sorry Stan, that is obviously wrong as I have shown
you twice before. Why can't you comment on this:

> > ... In very rough figures, the radius
> > of the orbit of Jupiter is about 5.2 AU. When the
> > Earth is closest to it, the light must travel 4.2AU
> > at speed c which takes about 2120s but when the Earth
> > is furthest from Jupiter the light must travel 6.2AU
> > so takes about 3120s (still at the same speed) hence
> > the difference of about 1000s.

6.2AU at speed c is 1003s more than 4.2AU at the
_same_ speed.

George

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