ALTHOUGH all experiments of the type of the Michelson experiment (with the exception of Miller's experiment) have shown that the second-order effects predicted by classical (non-relativistic) optics ...

IT is interesting to learn from L. Essen's communication 1 that the accuracy of measurement of frequencies in the 9,000 Mc./s. region attained at the National Physical Laboratory with existing ...

As the 19th century came to a close, physicists were feeling pretty satisfied with the state of their science. The great edifice of physical theory seemed complete. A few minor experiments remained to ...