If the direction of motion is perpendicular to the "plates", length contraction of the plates does not occur, but the distance between them is reduced.
Those stresses were interpreted by him as an external, non-electromagnetic pressure, which stabilize the electrons and also served as an explanation for length contraction.
But this is not strictly correct, since length contraction and time dilation having their exact relativistic values are sufficient but not necessary for the explanation of both experiments.
In particular, the effects of time dilation and length contraction are used in both of these paradoxes to create situations which seemingly contradict each other.
Special relativity implies a wide range of consequences, which have been experimentally verified, including length contraction, time dilation, relativistic mass, massenergy equivalence, a universal speed limit, and relativity of simultaneity.