This was sent 6 hours ago, but never showed up, so here goes again.
On Jan 19, 2006, at 6:35 PM, Stephen A. Lawrence wrote:
[snip a lot of good stuff]
http://www.physicsinsights.org/linear_twins.html
[snip a lot more]
If a one dimensional photon counting clock model, as laid out just
prior, makes any sense, then faster than light travel can make sense
as well, assuming he has a very high Isp drive, like a ZPE drive. As
the traveler exceeds the speed of light, he simply does not see any
photons from earth. This does not mean he is traveling backwards in
time. It only means his communication with earth is cut off (unless
of course he has some spooky action at a distance communication
device.) When he the traveler turns around, he eventually starts
receiving the photons again, but very much blue shifted. When
traveling faster than light relative to earth, his earth clock merely
stops, it doesn't run backwards. His own local clock, however, keeps
on ticking. Again, without some change in the traveler's clock due
to acceleration, all the clocks must be in synchronization upon his
return.
Hows that for angel's advocate? 8^)
Horace Heffner
