Re: THE SAGNAC LOOP

THE_ONE wrote:
It is said that the speed of light in both directions is the same
within any inertial frame.

Exactly. In any _inertial_ frame.
A frame of reference fixed to train going in circle
is not an _inertial_ frame of reference.

With this in mind you should be able to figure out the answers
to your questions below yourself.

Paul

1) Therefore, if we had a Train on which there are two fiber optics
cables, each extending from end to end of the train, light passing from
end to end of the train through one on the two cables, will do so in a
given time period that is the same as the time period would be for
light to travel from end to end of the train through the other cable
but in the opposite direction.

2) Meanwhile, it is known that if this train was to be on a circular
path, then the time period for the light to complete the path from end
to end of the train in one direction, would not be the same as the time
period would be for the light to travel in the opposite direction
through the other fiber optics cable. This has been proven to be true
by using the SAGNAC INTERFEROMETER.

Now for the question.

If the train track is as follows .......O... , meaning it a straight
track for some time, and then it becomes a loop, and then it returns to
being a straight track once again, then how is it that light can one
minute go from end to end of the train in either direction in the same
time period, then suddenly it can no longer do this when on the loop,
then somehow the light magically is able to travel from end to end of
the train in either direction in the same time period once again ?

SEE http://www.outersecrets.com/real/5_4d_3.htm for pic of train
experiment.

THE_ONE

.

Relevant Pages

  • Re: THE SAGNAC LOOP
    ... if we had a Train on which there are two fiber optics ... cables, each extending from end to end of the train, light passing from ... given time period that is the same as the time period would be for ... The Sagnac EffectThe usual claim is that the Sagnac ...
    (sci.physics.relativity)
  • Re: THE SAGNAC LOOP
    ... if we had a Train on which there are two fiber optics ... cables, each extending from end to end of the train, light passing from ... given time period that is the same as the time period would be for ...
    (sci.physics.relativity)
  • Re: OBarrs Lamentations!
    ... possible to send light right through the Train from end to end. ... just as this occurs one of the observers shoots a laser beam of light ... only when an observer in one frame looks at the tools in another frame that ... such a distance in a shorter time period than expected, ...
    (sci.physics.relativity)
  • THE SAGNAC LOOP
    ... if we had a Train on which there are two fiber optics ... cables, each extending from end to end of the train, light passing from ... given time period that is the same as the time period would be for ... light to travel from end to end of the train through the other cable ...
    (sci.physics.relativity)
  • Re: The relativity of simultaneity
    ... which the train is moving) will reach the passenger before flash A. ... Closing velocities as perceived by the track observer ... light from different directions in the M' frame is isotropic. ... the two light rays arriving to him simultaneously by definition of the ...
    (sci.physics.relativity)