Re: The real twin paradox.

On Nov 29, 12:10 pm, "Sue..." <suzysewns...@xxxxxxxxxxxx> wrote:
On Nov 29, 10:58 am, stevendaryl3...@xxxxxxxxx (Daryl McCullough)
wrote:

Sue... says...

The page shows a young twin beside an old twin after
one twin has traveled.
Does one of the twins have a medical disorder or is the page
it offering argument against the principle of relativity?

One twin looks older because he is *older*. He has lived longer.

The "time" that is important for physical processes is not
coordinate time, but *proper* time.

Proper time is the appearace of a distant clock.
That can have no influence on phenomena aboard the
ship.

...Unless you are holding to Newton's concept of
an inertial ether. As I have mentioned previously
you are making a splendid argument in its favor.



<< The general principle of relativity states that physical
laws are the same in all reference frames -- inertial or non-
inertial.>>


http://en.wikipedia.org/wiki/Principle_of_relativity

Yes, and what those laws say is that the amount of aging
of any twin is equal to the proper time since he is born,
where proper time is computed by:



<< tau = integral of square-root(g_uv dx^u dx^v)

In GR it is completely rational to grid a region
of space as Newton's ether so its volume can has
a relationship to electromagnetic energy or
the equivalent mass. That is how inertia enters
the field equations.

But it is completly unnecessary to hold SR's postulates
to a Newtonian space to resolve a conflict that
does not even exist and is already resolved in
classical EM.

That may be unclear, even in the 1920 paper
<< in reality there is not the least incompatibility
between the principle of relativity and the law of
propagation of light >>
http://www.bartleby.com/173/7.html

but is seems perfectly clear in Weinberg's
statement:
<<A Lorentz transformation or any other coordinate
transformation will convert electric or magnetic
fields into mixtures of electric and magnetic fields,
but no transformation mixes them with the
gravitational field. >>
http://www.aip.org/pt/vol-58/iss-11/p31.html


Sue...



Ah... I don't find that interpretation on the page.
My browser finds about 5 occurance of pAGE but
no occurance of AGE.

Sue...



--
Daryl McCullough
Ithaca, NY- Hide quoted text -

- Show quoted text -

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