Dirk Van de moortel wrote:

"Russell" <russell@mdli.com> wrote in message news:1128364185.906482.141330@f14g2000cwb.googlegroups.com...

Androcles wrote:

"John Baez" <baez@galaxy.ucr.edu> wrote in message
news:dhrr0r$3v5$1@glue.ucr.edu...
| In article <Ac50f.44896$VI6.6205@fe1.news.blueyonder.co.uk>,
| Androcles <Androcles@ MyPlace.org> wrote:
|
| >In
|

http://math.ucr.edu/home/baez/physics/Relativity/SR/TwinParadox/doppler.gif

| >Baez has constructed 16 arrows in the left diagram and 32 in the
right
| >diagram.
|
| This sentence is false. If you could read, you'd know why:

http://math.ucr.edu/home/baez/physics/Relativity/SR/TwinParadox/twin_vase.html

"The time dilation factor in the diagram is two: Terence ages twice as
much as Stella. (Notice that Stella has time to send off a mere 16
pulses, while Terence fires off 32.)2)"
Baez writes with forked tongue.
Baez is fucking insulting arsehole, he say "If you could read".

Um, check the authorship of the page. It's not hard
to find.

Aaargh... you shouldn't have given that away!
What a superb missed occasion :-(

Occasion for what? He already made himself into a fool
three or four times over (on this point alone) so what's
the point of more?

Besides, he isn't reading either me or you, so I gave
nothing away yet, right? ;-)

Dirk Van de moortel wrote:

"Russell" <russell@mdli.com> wrote in message news:1128364185.906482.141330@f14g2000cwb.googlegroups.com...

Androcles wrote:

"John Baez" <baez@galaxy.ucr.edu> wrote in message
news:dhrr0r$3v5$1@glue.ucr.edu...
| In article <Ac50f.44896$VI6.6205@fe1.news.blueyonder.co.uk>,
| Androcles <Androcles@ MyPlace.org> wrote:
|
| >In
|

http://math.ucr.edu/home/baez/physics/Relativity/SR/TwinParadox/doppler.gif

| >Baez has constructed 16 arrows in the left diagram and 32 in the
right
| >diagram.
|
| This sentence is false. If you could read, you'd know why:

http://math.ucr.edu/home/baez/physics/Relativity/SR/TwinParadox/twin_vase.html

"The time dilation factor in the diagram is two: Terence ages twice as
much as Stella. (Notice that Stella has time to send off a mere 16
pulses, while Terence fires off 32.)2)"
Baez writes with forked tongue.
Baez is fucking insulting arsehole, he say "If you could read".

Um, check the authorship of the page. It's not hard
to find.

Aaargh... you shouldn't have given that away!
What a superb missed occasion :-(

Occasion for what? He already made himself into a fool
three or four times over (on this point alone) so what's
the point of more?

Besides, he isn't reading either me or you, so I gave
nothing away yet, right? ;-)

http://math.ucr.edu/home/baez/physics/Relativity/SR/TwinParadox/doppler.gif

<> >><> >><> >><> >><> >><>

Androcles wrote:

"Ken S. Tucker" <dynamics@vianet.on.ca> wrote in message
news:1128366522.735114.291540@z14g2000cwz.googlegroups.com...
| Androcles wrote:
| > "John Baez" <baez@galaxy.ucr.edu> wrote in message
| > news:dhrr0r$3v5$1@glue.ucr.edu...
| > | In article <Ac50f.44896$VI6.6205@fe1.news.blueyonder.co.uk>,
| > | Androcles <Androcles@ MyPlace.org> wrote:
| > | >In

http://math.ucr.edu/home/baez/physics/Relativity/SR/TwinParadox/doppler.gif

| > | >Baez has constructed 16 arrows in the left diagram and 32 in the
| > right
| > | >diagram.
| > |
| > | This sentence is false. If you could read, you'd know why:
| >
| >
http://math.ucr.edu/home/baez/physics/Relativity/SR/TwinParadox/twin_vase.html
| >
| > "The time dilation factor in the diagram is two: Terence ages twice
as
| > much as Stella. (Notice that Stella has time to send off a mere 16
| > pulses, while Terence fires off 32.)2)"
| > Baez writes with forked tongue.
| > Baez is fucking insulting arsehole, he say "If you could read".
| > Androcles.
|
| Andro, I think you've identified a problem.
| Any simplistic treatment of the *twin paradox* is
| bound to contain compromises.
| An uncompromised treatment (IMO), does require GR
| and Quantum Theory and may be beyond the ability
| of the author(s) to explain.
| Ken


I identified the problem a long time ago, Ken.
It is this:
[quote]
we establish by definition that the "time" required by a turtle to
travel
from A to B equals the "time" it requires to travel from B to A.
[end quote]
Ref: http://www.fourmilab.ch/etexts/einstein/specrel/www/

Nothing can go faster than a turtle.
Oops!... Did I say 'a turtle'? Sorry...'light'.
No matter, the math is the same.
Androcles.

"For velocities greater than that of a turtle our deliberations become
meaningless; we shall, however, find in what follows, that the velocity
of a turtle in our theory plays the part, physically, of an infinitely
great velocity." --Albert Einstein
Dang... I said 'turtle' again. Sorry about that.

I hear ya Andro.
To me GR requires Quantum Theory to make sense.
For example, to perturb a particle from a free-fall
trajectory requires the input of a quanta of energy,
Moreover, beginning with two clocks at relative
rest (and synchronized), the action of relative
acceleration will require the input of quantized
energy like a photon, to accelerate one of the
clocks.

All those factors are accounted for in GR, but
in *classical continuum GR* these effects are
ignored due to over-simplification.

Cheers
Ken S. Tucker