"By postulates, atomic time is the uniform time of electromagnetism. Leaving aside relativistic and operational effects, are SI seconds formed at different times truly equal? This question cannot be answered without an invariable time standard for reference, but none exists. The conclusion is that no time scale can be proved to be uniform by measurement. This is of no practical consequence, however, because tests have shown that the atomic clock provides a time scale of very high accuracy."
Well, if that is the case, everything else is scaled in the same way, thus nothing is really affecte…