Re: Twin paradox revisited ll

On Jul 23, 10:05 am, "N:dlzc D:aol T:com \(dlzc\)" <d...@xxxxxxx>
wrote:
Dear Sue:

"Sue..." <suzysewns...@xxxxxxxxxxxx> wrote in message

news:1185168541.051562.24580@xxxxxxxxxxxxxxxxxxxxxxxxxxxxxx





On Jul 23, 1:29 am, "N:dlzc D:aol T:com \(dlzc\)"
<d...@xxxxxxx>
wrote:
Dear Sue:

"Sue..." <suzysewns...@xxxxxxxxxxxx> wrote in message

news:1185154911.540622.282240@xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
On Jul 22, 10:03 pm, "N:dlzc D:aol T:com \(dlzc\)"
<d...@xxxxxxx>
wrote:
[...]

And aren't those observations (determinations)
nothing more than visual illusions generated by
the red shift and blue shift of the light from the
planet?

Problem is, if you total up the number of such full
orbits, it will agree with the stay-at-home's age,
and not the traveller's age.
The traveler's *age* is not an issue.

Absolutely true.

If Stella's hair differs significantlly from Terra's
then the priniciple of relativity has been violated.

Sorry, no. And you proceed to posture yet again.

It is a widely accepted *posture*.

Sez you.

Sez Richard Fitpatrick. Sorry I forgot the URL.
It is below.


<< The key to understanding special relativity is
Einstein's relativity principle, which states that:

'All inertial frames are totally equivalent for the
performance of all physical experiments.' >>


... within the frame, yes.


<< In other words, it is impossible to perform a
physical experiment which differentiates in
any fundamental sense between different
inertial frames. >> [...]

Sorry, no. The "doors and windows of the ship's cabin must be
closed" for that to be true. But you knew that.

You seem to be rewriting PoR.

You think hair growth is afffected by doors and
windows? Should I open or close my windows
to conserve on wrinkle cream? :o)


<<by definition, Newton's laws of motion take the same
form in all inertial frames. Einstein generalized this
result in his special theory of relativity by asserting
that all laws of physics take the same form in all
inertial frames. >>
http://farside.ph.utexas.edu/teaching/em/lectures/node108.html



... *in all inertial frames* ... not between frames ... not
making observations ourside your frame.

My hair grows even if I close my eyes.


IOW The length of growing hair and burning birthday
candles will have to be the same or PoR is violated.

Sorry, no. "Not even wrong".

Is it my imagination or is there some link between
rejection of Maxwell's time dependent equations
insistance on Newton's light and the insistance on the
twins absurdity of the 1905 paper?



Sue...






David A. Smith- Hide quoted text -

- Show quoted text -


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