KRAMERS, H.A.

Intensities of Spectral Lines on the Application of the Quantum Theory to the Problem of the relative Intensities of the Components of the fine Structure and of the Stark Effect of the Lines of the Hydrogen Spectrum.

Kbhvn., Andr. Fred. Høst, 1919. 4to. Orig. printed wrappers. pp. 287-384,(2) as offprint from Memoires de L'Academie Royale des Sciences et des Letteres de Danemark, and 4 plates. Small rubberstamp on title and frontwr. Light wear to lower backstrip, effecting lower left corner of frontwr.

First edition of Kramer's doctorial thesis. Karmer was Niels Bohr's first assistent when Bohr's Institute opened in 1920, later he returned to Utrecht and became sucessor to Ehrenfest. - The frequency of spectral lines did not coincide with a kinetic frequency of electrons, but was only partly explained by Bohr's correspondence principle. Kramer developed here in this work the mathematical formalism required to unite these ideas, leading to an interpretation of the intensities of Stark Components.

Order-nr.: 25820