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From: RNeal.dm8%pco@HI-MULTICS.ARPA
Newsgroups: net.physics
Subject: Relativity questions
Message-ID: <12647@sri-arpa.UUCP>
Date: Tue, 24-Apr-84 06:58:00 EDT
Article-I.D.: sri-arpa.12647
Posted: Tue Apr 24 06:58:00 1984
Date-Received: Mon, 30-Apr-84 05:18:04 EDT
Lines: 39

I have some questions about relativity, time, and speed and I thought
the attendees of this meetimthe attendees of this meetim ng may be able
to answer them.

First question (and we need some assumptions)-
      1)the speed of light is constant in a given medium without
        regard to the motion of the source.
      2)the sun is moving through space in some definite direction
        with a definite speed.

     Therefore, the frequency of sunlight hitting the earth when it
     is "following" the sun should be different than that when it is
     "leading" the sun due to "red shift".

>>>Is this correct?  Is it detectable?


Next (and not as well constructed either)-
     Time passes at different rates due to the speed at which an
     object travels (ie. the famous Twins Paradox). What reference
     point is "speed" calculated from? If the same effect was seen
     from either reference point, then it would not matter; but it
     is not.

     In the experiment with the atomic clocks on the jet and the ground
     they zipped the jet around the earth, then the clocks were not the
     same (the clock on the jet was behind, I think). What if the jet
     flew counter to the earth's rotation? Wouldn't it in effect be
     going "slower" than the ground clock? Would the time differences
     reverse?


Last (and shortest, but not least)-
     Since everything in the universe is moving (and some at a very
     good clip according to the red shifts observed) does that mean
     time passes at different rates everywhere?

Thanks for any help in setting my confused mind straight.
                    >RUSTY<