"Sur une expérience relative à la vitesse de propagation de la lumière" in "Comptes rendus hebdomadaires des séances de l'Académie des Sciences".

FIZEAU, (ARMAND HIPPOLYTE)

Published by Paris, Bachelier, 1849

About this Item

FIZEAU, (ARMAND HIPPOLYTE). "Sur une expérience relative à la vitesse de propagation de la lumière" in "Comptes rendus hebdomadaires des séances de l'Académie des sciences", Paris, Bachelier, 1849, vol. 29, with Fizeau's paper on pp. 90-92.[++] Bound in a modern standard blue library cloth; old German university rubber stamp on rear title page. Very crisp and bright. [++] "Fizeau was not satisfied merely with determining the relative velocities of light. He wanted to measure with some precision the absolute velocity. In 1849 he had conceived an ingenious mechanism that would enable him to achieve his goal: a large toothed wheel was spun rapidly about its axis, and a beam of light sent through the spaces between the teeth was reflected back to its source by a fixed mirror. When the wheel was rotated rapidly enough, the intermittent light rays returning from the mirror intersected the path of the teeth and thus became invisible to the observer stationed behind the wheel. As the mechanism was turned faster and faster, the light reappeared and disappeared alternately. The time required for the light to travel through the carefully measured distance was a simple function of the angular displacement of the wheel. In 1849 Fizeau made a trial of his new method between his father s house at Suresnes and Montmartre. The figure he obtained for the speed of light (about 315,000 kilometers per second) was not quite as accurate as the results of astronomical calculations, but the practicability of the method was established and became the basis of the more precise determinations made by Alfred Cornu in the 1870 s."--Complete DSB online ALSO IN THIS VOLUME: BLANQUART-ÈVRARD, (Louis-Desire)."Recherches photographiques." vol 29, pp. 215-217. [++] DUCHENNE DE BOULOGNE, Guillaume. "Recherches faites à l'aide du galvanisme sur l'etat de la contractilité et de la sensibilité électro-musculaires dans les paralysies des membres" vol. 29, Duchenne's appears on paper on pp. 667-70. (Duchenne Muscular Dystrophy) FNCH 005.

Seller Inventory # ABE-1664150981751

Bibliographic Details

• Title: "Sur une expérience relative à la vitesse de propagation de la lumière" in "Comptes rendus hebdomadaires des séances de l'Académie des Sciences".
• Publisher: Paris, Bachelier
• Publication Date: 1849
• Binding: Hardcover
• Condition: Very Good
• Seller catalogs:
  • Chemistry
  • Physics