Abstract

The wave or particle confusion is not a kind of complementarity – as Niels Bohr said. However, the paradox can be solved by introducing a particle-based ether and a light model based on waves only. By strict following the wave model we can see that the introduction by Potier of an ether wind effect in the transverse arm in Michelson and Morley’s test equipment (MMX) was a mistake. This error was helpful in creating the wave or particle paradox and, in the end, also produced the twin paradox.