Berichtigung zu meiner Arbeit: "Eine neue Bestimmung der Moleküldimensionen." Offprint

Einstein, Albert (1879-1955). Berichtigung zu meiner Arbeit: "Eine neue Bestimmung der Moleküldimensionen." Offprint from Annalen der Physik 34 (1911). 591-592pp. 224 x 146 mm. Original printed wrappers, a little chipped, splint in lower spine. Light toning but very good.

First Edition, Offprint Issue. Einstein's correction to his formula for the viscosity coefficient * = (1 + ), a key equation in his 1905 doctoral thesis, in which he had presented a new theoretical method for determining molecular radii and Avogadro's number. In 1910 Jacques Bacelin, a pupil of French physicist Jean-Baptiste Perrin, obtained experimental results indicating a possible error in Einstein's formula. "That prompted Einstein, after an unsuccessful attempt to find an error, to ask his student and collaborator Ludwig Hopf to check his calculations and arguments . . . Hopf did find an error in the dissertation, namely in the derivatives of some velocity components, and obtained for a corrected coefficient 2.5 . . .In early 1911 Einstein submitted his correction for publication, and recalculated Avogadro's number. He obtained a value of 6.56 x 1023 per mole, a value that is close to those derived from kinetic theory and Planck's black-body radiation theory" (Duplantier, pp. 216-217). Duplantier, "Brownian motion, ‘diverse and undulating,'" in Einstein, 1905-2005: Poincaré Seminar 2005, pp. 201-293. Pais, Subtle is the Lord, p. 92. Weil, Albert Einstein Bibliography, 41.