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- Giovanni_Poleni abstract "Giovanni Poleni (b. Venice, around 1683; d. Padua, Nov., 1761) was a Marquess, physicist, mathematician and antiquarian.He was the son of Marquess Jacopo Poleni and studied the classics, philosophy, theology, mathematics, and physics at the School of the Padri Somaschi, Venice. He was appointed, at the age of twenty-five, professor of astronomy at Padua. In 1715 he was assigned to the chair of physics, and in 1719 he succeeded Nicholas II Bernoulli as professor of mathematics. As an expert in hydraulic engineering he was charged by the Venetian Senate with the care of the waters of lower Lombardy and with the constructions necessary to prevent floods. He was also repeatedly called in to decide cases between sovereigns whose states were bordered by waterways.Poleni was the first to build a calculator that used a pinwheel design. Made of wood, his calculating clock was built in 1709; he destroyed it after hearing that Antonius Braun had received 10,000 Guldens for dedicating a pinwheel machine of his own design to the emperor Charles VI of Vienna. Poleni described his machine in his Miscellanea in 1709, but it was also described by Jacob Leupold in his Theatrum Machinarum Generale ("The General Theory of Machines") which was published in 1727. In 1729, he also built a tractional device that enabled logarithmic functions to be drawn.Poleni's observations on the impact of falling weights (similar to William 's Gravesande's) led to a controversy with Samuel Clarke and other Newtonians that became a part of the so-called "vis viva dispute" in the history of classical mechanics.His knowledge of architecture caused Benedict XIV to call him to Rome in 1748 to examine the cupola of St. Peter's, which was rapidly disintegrating. He promptly indicated the repairs necessary. He also wrote a number of antiquarian dissertations. In 1710 he was elected a Fellow of the Royal Society, in 1739 the French Academy of Sciences made him a member and later the societies of Berlin and St. Petersburg did the same. The city of Padua elected him as magistrate, and after his death erected his statue by Canova. Venice also honoured him by striking a medal.He married Orsola Roberti of Bassano della Grappa.".
- Giovanni_Poleni birthDate "1683-08-23".
- Giovanni_Poleni birthYear "1683".
- Giovanni_Poleni deathDate "1761".
- Giovanni_Poleni deathPlace Padua.
- Giovanni_Poleni deathYear "1761".
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- Giovanni_Poleni dateOfBirth "1683-08-23".
- Giovanni_Poleni dateOfDeath "November 1761".
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- Giovanni_Poleni name "Poleni, G".
- Giovanni_Poleni placeOfBirth "Venice".
- Giovanni_Poleni placeOfDeath "Padua, Italy".
- Giovanni_Poleni shortDescription "Italian scientist and antiquarian".
- Giovanni_Poleni description "Italian scientist and antiquarian".
- Giovanni_Poleni description "Italian scientist and antiquarian".
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- Giovanni_Poleni subject Category:Italian_antiquarians.
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- Giovanni_Poleni comment "Giovanni Poleni (b. Venice, around 1683; d. Padua, Nov., 1761) was a Marquess, physicist, mathematician and antiquarian.He was the son of Marquess Jacopo Poleni and studied the classics, philosophy, theology, mathematics, and physics at the School of the Padri Somaschi, Venice. He was appointed, at the age of twenty-five, professor of astronomy at Padua. In 1715 he was assigned to the chair of physics, and in 1719 he succeeded Nicholas II Bernoulli as professor of mathematics.".
- Giovanni_Poleni label "Giovanni Poleni".
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- Giovanni_Poleni label "Giovanni Poleni".
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- Giovanni_Poleni name "G Poleni".
- Giovanni_Poleni name "Poleni, G".
- Giovanni_Poleni surname "Poleni".
