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THOLLON. L. [LOUIS]. Déplacement (Deplacement) de Raies Spectrales, Dü (Du) Au Mouvement de Rotation Du Soleil in Comptes Rendus T. Lxxxviii, 1879, Pp. 169-171.
Paris:, Academie des Sciences,, 1879.. Paperback. Offered Is a Near Fine Entire Issue of Comptes Rendus in Modern Red Wrappers with White Title Label Front Cover. Mild Scattered Foxing. Sm. 4to. Near Fine, At the start of his own research, in 1879, Thollon carried out an experiment that has become classic. He demonstrated the Doppler-Fizeau effect in a concrete manner. If one alternately projects on the slit of a spectroscope the eastern and western sides of the sun, the spectral lines exhibit a displacement representing the difference of 4 km per second between the radial velocities of the two sources. The telluric lines that originate in the terrestrial atmosphere remain fixed. (DSB Vol. 13 p. 344).
Offered for US$ 40.00 by: By The Book, LC - Book number: 39099