Twins even

| | | | | | At .7027c and .5d, the moving light clock displays the same time than the one at rest, and if it was moving sideways to the motion, there would also be a distance between the mirrors where the light would take the same time than if they were at rest, which means that, with the right contraction in both arms of the Michelson/Morley's interferometer, there would be no need for time dilation to explain the null result.