Re: Rel. Speed
- From: "Sue..." <suzysewnshow@xxxxxxxxxxxx>
- Date: Wed, 27 Jun 2007 22:39:36 -0700
On Jun 27, 11:17 pm, "razyrel" <razy...@xxxxxxxxxxxxxxxxxx> wrote:
Suppose a spaceship is moving at a constant speed of 0.8c.
OK, 0.8 c wrt the ISM.
http://en.wikipedia.org/wiki/Free_space
http://www-ssg.sr.unh.edu/ism/what.html
Then the ship sends a pulse of light to the same direction as of the ship.
Questions:
a) Will the speed of this pulse of light be c or c-0.8=0.2c ?
It will be c wrt the ISM
b) How is it to interpret from the ship's frame of reference?
The light propagtes at c wrt the ISM irrespective of
the ship's motion.
c) How is it to interpret from the frame of reference of a stationary viewer
who is in a distance at a right angle parallel to the ships route when
the light knob was pushed?
The light propagtes at c wrt the ISM irrespective of
the observer's motion.
The nearfield effects of motion will modify the retarded time
on either end.
http://farside.ph.utexas.edu/teaching/em/lectures/node50.html
Sue...
.
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- Rel. Speed
- From: razyrel
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