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ALBERT EINSTEIN (1879-1955)
Autograph letter in German, signed 'A. Einstein', from Prague, dated 14 December 1911, 2pp with integral blank leaf, 4°, to the director of the Schweizerischen Telegraphen und Telephonverwaltung ('Hoch geehrter Herr Direktor!'), stamped and endorsed as received on 18 December, commending the services of Herr Zimmermann (presumably an employee of the company), who had been employed in making him an apparatus for electrostatic measurement to be used as a substitute for a sensitive quadrant electrometer. He defends Zimmerman against the suspicion of malpractice, having the impression that he had done much of the work for this assignment at home and in his free time, and furthermore saying that the price Einstein paid bore little relation to the delicacy of the work.
Einstein had moved to Prague in April 1911 as a professor in the German University, but it seems likely that the apparatus under discussion was one he had used before his move from Zurich, perhaps in his earliest intense work on a new field theory, for which, in his efforts to find a point of departure, he had devoted considerable attention to H. A. Lorentz's theory of electrons.
Autograph letter in German, signed 'A. Einstein', from Prague, dated 14 December 1911, 2pp with integral blank leaf, 4°, to the director of the Schweizerischen Telegraphen und Telephonverwaltung ('Hoch geehrter Herr Direktor!'), stamped and endorsed as received on 18 December, commending the services of Herr Zimmermann (presumably an employee of the company), who had been employed in making him an apparatus for electrostatic measurement to be used as a substitute for a sensitive quadrant electrometer. He defends Zimmerman against the suspicion of malpractice, having the impression that he had done much of the work for this assignment at home and in his free time, and furthermore saying that the price Einstein paid bore little relation to the delicacy of the work.
Einstein had moved to Prague in April 1911 as a professor in the German University, but it seems likely that the apparatus under discussion was one he had used before his move from Zurich, perhaps in his earliest intense work on a new field theory, for which, in his efforts to find a point of departure, he had devoted considerable attention to H. A. Lorentz's theory of electrons.
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