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First experimental demonstration of earth rotation.- Foucault (Léon) "Démonsration physique du mouvement de rotation de la terre au moyen du pendule", in Compte Rendu des Séances de l'Académie des Sciences, vol.32, pp.135-138,light foxing and browning, bookplates, ex-library copy with ink-stamps, contemporary calf-backed boards, gilt spine with red morocco and paper labels, slight wear to extremities, Paris, 1851; and vol.35 from the same journal,4to(2) *** First demonstration of the rotation of the earth. Across both volumes are the first appearances of the seminal papers, including his discovery of the earth's rotation by the large pendulum, known as Foucault's Pendulum, which has played a prominent role in physics. Other titles included in these volumes by Foucault are: "Sur une nouvelle démonstration experimentale du mouvement de la Terre, fondée sur la fixité du plan de rotation" "Sur les phénomènes d'orientation des corps tournants entrainés par un axe a la surface de la Terre" "Démonstration experimentale du mouvement de la Terre. Addition aux communications faites dans le précédentes séances" "Sur la tendance des rotations au parallelisme"
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