Figure 3: Action of the GW on a Michelson interferometer: (a) -polarized GW periodically
stretch and squeeze the interferometer arms in the - and -directions, (b) -polarized GW
though have no impact on the interferometer, yet produce stretching and squeezing of the imaginary
test particle ring, but along the directions, rotated by with respect to the and directions
of the frame. The lower pictures feature field lines of the corresponding tidal acceleration fields
.
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