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--- Stephen Speicher <sjs@COMPBIO.CALTECH.EDU> wrote:
On Mon, 16 Jun 2003, Pentcho Valev wrote:
The time t_C characterizes the movement of C between B and A. The
respective time on A's clock is T_A / 2. Since no frame is more
fundamental than the other, the conclusion is
t_C = T_A / 2
You have confused the issue. First you mistakenly think that t_C
is somehow related to B, when in fact it is related to how C
moves with respect to A. Second, t_C = T_C/2, not T_A/2.
These counterarguments had already appeared in the
sci.physics.relativity group.
Note that T_C is only defined if the
time needed for carrying out the physical processes in C's clock is
zero.