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length of the coils depended on their angle with respect to their Aether velocity. Trouton and
Rankine therefore believed that the resistance as measured in the rest frame of the experiment should change as the device was rotated. However their careful measurements showed no detectable change in resistance.
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configuration which allowed them to precisely measure any change in resistance. The circuit was then rotated 90 degrees about its axis as the resistance was measured. Because the
Lorentz–FitzGerald contraction is only in the direction of motion, from the point of view of the "Aether frame" the
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in 1903), instead did the calculations using his own interpretation of electrodynamics, calculating the length contraction according to the velocity of the experimental apparatus in the aether frame, but calculating the electrodynamics by applying
Maxwell's equations and
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as well), according to which observers at rest in a certain inertial reference frame, cannot measure their own translational motion by instruments at rest in the same frame. Consequently, also length contraction cannot be measured by co-moving observers. See also
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in the lab frame. According to
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Laub, Jakob (1910). "Über die experimentellen
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