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Further proof is submitted by Professor A. Sommerfeld, of Munich, who has been lecturing in Washington. His data show that the orbits of the electrons in hydrogen and helium atoms are in accord with the lines in the spectra of these gases as predicted by Einstein.
The theory of relativity is far more complex than these scattered discoveries reveal. Einstein's latest extension of the theory, recently announced, is so intricate that it can be explained only in the most abstruse mathematics. The fields of gravitation and electromagnetism are brought together by this new hypothesis in one unified explanation of the dynamics of the universe, following out the ideas originally suggested by Eddington, the Cambridge astronomer.