Re: The real twin paradox.

colp wrote:
On Dec 1, 9:11 pm, Bryan Olson wrote:
colp wrote:
Bryan Olson wrote:
colp wrote:
Bryan Olson wrote:
colp wrote:
What am I making up?
[...]
For their clocks to be the same time, A must have observed that B's
time was compressed at some stage.
SR does not describe time compression.

That you made up. According to SR, A's change it frames will
result in A seeing B's age jump forward.

Wrong. SR has nothing to say about non-inertial frames.
Special relativity (SR) (aka the special theory of relativity) is the
physical theory of measurement in inertial frames of reference
proposed in 1905 by Albert Einstein in his article "On the
Electrodynamics of Moving Bodies".
http://en.wikipedia.org/wiki/Special_relativity

Reading the page you cite, we find:
Special relativity does not account for gravity, but
it can deal with accelerations.
How does special relativity deal with accelerations?

In the way that I and other have been citing and explaining
over and over and over. When changing frames, account for the
difference in synchronization between the old frame and the new
frame.

The application of that techniques in the example would lead to
absurdity -
eg radio signals that had already been sent would have to
change in order to represent the observed time of the remote twin
after the twin had changed frames.

In an odd time-reversal phenomenon, I responded to the above
almost a week ago:

Yeah, your situation is absurd alright. So let's use SR
instead: I get the same signal, the same photos, regardless
of my direction. When I change inertial frames, I change
the frame in which I observe light moving at c. The frames
agree about what signal is currently arriving, but disagree
about how long ago that signal left my twin.


The bottom line is that relativity can't account for the time dilation
observed by a twin when the twins clocks must agree at the end of the
experiment.

SR can. You, well, not while you're trying so hard to stay ignorant.


--
--Bryan
.

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