Re: SR cannot determine Contraction


"Artful" <artful@xxxxxxxxxx> wrote in message
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"kenseto" <kenseto@xxxxxxxxxx> wrote in message
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"Artful" <artful@xxxxxxxxxx> wrote in message
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"kenseto" <kenseto@xxxxxxxxxx> wrote in message
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"Paul B. Andersen" <paul.b.andersen@xxxxxxxxxxxxxxxx> wrote in
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An object isn't affected in any way by an arbitrary
observer's motion relative to the object.
But the object's motion relative to the observer
will affect the observer's _observations_ of the object.

But observations for a moving clock shows that it is in fact really
running
slow.....it accumulates less elapsed time. So your claim that
relative
motion isn't affecting the rate of a clock is bogus.

No .. it doesn't mean that at all .. it meas that there is less elapsed
time. Unless you are talking about the rate of ticking of the moving
clock
as observed by the stationary observer .. in which case it is not
contradictory to what was claimed.

Hey idiot

I'm not an idiot. You seem to be confused about that as well.

Yes you are an idiot.

accumulating less elapsed time means that it is running at a
slower rate.

No .. it means there is less time elapsed. That doesn't mean the clock is
running slower. If you have two roads (X and Y) between towns A and town
B,
and road X is longer than road Y, then you would see a difference in
odometer readings for cars going on road X vs road Y.

This anology sucks. Time is not distance. There is only one kind of time and
that is proper time or absolute time or universal time. The rate of passage
of proper time (absolute time or universal time) is the same in all frames
and that's why SR says that proper time is invariant.

That does not mean
that the odometer in one car was measuring distance differently to the
other
.. just that the distance being measured is different.

No idiot the distance being measured is NOT different. The difference in
distance on the odometers is due to one car travelled a longer distance than
the other car.

Similarly, that two
clocks show different elapsed time does not mean that one had its rate of
ticking changed.. but simply that they measured different amounts of
elapsed
time (proper time).

Hey idiot.....when two clocks show different elapsed time means that they
are running at different rates.

Ken Seto

Of course, if you are observing a clock remotely, you will observe it as
ticking at a slower rate .. but then you are talking about coordinate
time,
not proper time. And you are talking about the projection of that clock
into your frame of reference.




.

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