The twin paradox was being discussed earlier in this thread, if I
recall
correctly. I came across this in sci.physics.research;

I've written a pedagogical paper, "The Twin Paradox in Special
Relativity." It's a 17-page pdf file with only 9 displayed equations
and
5 graphs. If you'd like a copy via email attachment, just let me
know.

Features include: (1) treatment of a single sample twin paradox
"trip"
using three alternative frames of reference (S, the earth and
stay-at-home twin; S', the outgoing spaceship; and S'', the incoming
spaceship); (2) a discussion and graph about the traveling twin's
need
to accelerate/decelerate at start, stop, and turnaround points; and
(3)
use of an inhomogeneous Lorentz transform (for frame S'').

Comments and criticism encouraged.

John T. Lowry, PhD

Flight Physics

jloxryx10x@eaxxthlxinkxnext