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The Foucault pendulum or Foucault's pendulum is a simple device named after French physicist Léon Foucault, conceived as an experiment to demonstrate the Earth's rotation. If a long and heavy pendulum suspended from the high roof above a circular area is monitored over an extended period of time, its plane of oscillation appears to change ...
Jean Bernard Léon Foucault (UK: / ʒ ɒ̃ ˈ b ɛər n ɑːr ˌ l eɪ ɒ̃ ˈ f uː k oʊ /, US: / ˌ ʒ ɒ̃ b ɛər ˈ n ɑːr l eɪ ˌ ɒ̃ f uː ˈ k oʊ /; French: [ʒɑ̃ bɛʁnaʁ leɔ̃ fuko]; 18 September 1819 – 11 February 1868) was a French physicist best known for his demonstration of the Foucault pendulum, a device demonstrating the effect of Earth's rotation.
The oldest Foucault Pendulum in Romania is located in pavilion B of the University of Oradea. It was installed in 1964 by Prof. Coriolan Rus, the then dean of the Faculty of Mathematics - Physics. (length: 14m; weight: 60 kg) "Vasile Alecsandri" National College in Galați (length: 9,92m; weight: 8 kg)
Foucault published two papers in 1852, one focused on astronomy with the weight free to move on all three axes (On a new experimental demonstration of the motion of the Earth, based on the fixity of the plane of rotation) [8] and the other on mechanics with the weight free to move on only two axes (On the orientation phenomena of rotating bodies driven by a fixed axis on the Earth's surface.
The pendulum clock invented by Christiaan Huygens in 1656 became the ... The Foucault pendulum in 1851 was the first demonstration of the Earth's rotation that did ...
In 1852, Foucault used it in an experiment demonstrating the rotation of the Earth. [13] [14] It was Foucault who gave the device its modern name, in an experiment to see (Greek skopeein, to see) the Earth's rotation (Greek gyros, circle or rotation), [15] [16] which was visible in the 8 to 10 minutes before friction slowed the spinning rotor.
1851 - Léon Foucault shows the Earth's rotation with a huge pendulum (Foucault pendulum) 1870 - Rudolf Clausius deduces virial theorem; 1890 - Henri Poincaré discovers the sensibility of initial conditions in the three-body problem. [17] 1898 - Jacques Hadamard discusses the Hadamard billiards. [18]
Foucault pendulum by Léon Foucault (who also developed and named the Gyroscope) in February 1851 in the Meridian of the Paris Observatory. Ocean thermal energy conversion in 1881 by Jacques-Arsène d'Arsonval (first OTEC plant in 1930 in Cuba by his student Georges Claude). [81] Radioactivity by Henri Becquerel in 1896. [82]