lies only at rays having velocities between the speed of light and 0,95. This bundle was overlooked by Bestelmeyer at all. I have conducted measurements also with respect to this. Therefore, I have taken (at the results represented by me here) only the maxima of the curves, to avoid exactly this point, and the influence is vanishing at those maximi.
Minkowski (Göttingen): I want to express my delight, that the experimental results speak in favor of Lorentz's theory when compared with the one of the rigid electron. That one day this will be the case, could not be doubted at all from the theoretical standpoint. The rigid electron is in my view a monster when put together with Maxwell's equations, whose innermost harmony is the relativity principle. When one approaches Maxwell's equations on the basis of the idea of the rigid electron, then it just appears to me, as if one goes into a concert and one has plugged ones ears with cotton. One has to admire in the highest the courage and the force of the school of the rigid electron, which jumps over the widest mathematical hurdles with a fabulous approach, in the hope to fall upon experimental ground at the other side. Yet the rigid electron is not a working hypothesis, it is a working hindrance.
Bucherer: The situation is mostly represented in a wrong way. It is actually not about the decision between Maxwell's and Lorentz's theory; indeed, Maxwell's theory is already superseded for a long time by the experiments of Michelson and Morley, as well as Trouton and Noble.
Minkowski: Not Maxwell's and Lorentz's theories are the actual oppositions, but the rigid and the non-rigid electron, i.e. the Zeppelin- and the Parseval electron. Historically, I want to add that the transformation, which play the main role in the relativity principle, were first mathematically discussed by Voigt in the year 1887. Already then, Voigt drew some consequences with their aid, in respect to the principle of Doppler.
Voigt: Minkowski is reminiscent of an old paper of mine. There, it is about the applications of Doppler's principle, which occur in special parts, though not on the basis of the electromagnetic theory, but on the basis of the elastic theory of light. However, already then some of the same consequences were given, which were later gained from the electromagnetic theory.
