He was born in Genoa. He was governor of Savona in 1647–1649 and captain of the Republic of Genoa's archers. For some 25 years, he held a correspondence with Galileo Galilei about the time's most innovative scientific theories and experiments.[1]
On 27 July 1630, Baliani wrote a letter to Galileo explaining an experiment he had made in which a siphon, led over a hill about 21 m high, failed to work. When the end of the siphon was opened in a reservoir, the water level in that limb would sink to about 10 m above the reservoir.[2] Galileo responded with an explanation of the phenomenon: he proposed that it was the power of a vacuum that held the water up, and at a certain height the amount of water simply became too much and the force could not hold any more, like a cord that can support only so much weight.[2][3]
Workedit
At Savona, from the Priamar Fortress, he repeated Galileo's experiment of the Tower of Pisa, obtaining more precise measurements which allowed him to underline the effect of air attrition. He also conducted an experiment to show the heat generated by a pot full of water, which he had boiled after rotating it at high speed.
His main work is entitled De motu naturali gravium, fluidorum et solidorum ("About the motion of bodies, fluids and solids"), published in 1638; in it, he was the first to enunciate the law of acceleration of a body and to distinguish between mass and weight.[citation needed] He also studied tides, supporting Galileo's theory that they were generated by the Earth's motion around the Sun. His arguments were published by Giovanni Battista Riccioli in his Almagestum novum (1651) and later resumed by John Wallis and Isaac Newton.[citation needed]
Deathedit
Baliani died at Genoa in 1666.
Notesedit
^Applebaum, Wilbur (2000), Encyclopedia of the Scientific Revolution: From Copernicus to Newton, Routledge, pp. 140–141, ISBN9781135582555, in 1614 he [Baliani] opened a correspondence with him [Galileo] that lasted many years. However, Applebaum also calls Baliani's correspondence with Galileo "intermittent". For another discussion of the timing and content of letters dating from 1615 to 1639, see Crombie, A. C. (1996), Science, Art and Nature in Medieval and Modern Thought, Continuum, pp. 224–225, ISBN9780826431622.
^ abMiddleton, W. E. Knowles. (1964). The history of the barometer. Johns Hopkins Press. p. 9.
^Shea, William R. (2003). Designing Experiments & Games of Chance: The Unconventional Science of Blaise Pascal. Science History Publications. pp. 21–. ISBN978-0-88135-376-1. Retrieved 10 October 2012.
Sourcesedit
Russo, Lucio (2003). Flussi e riflussi – Indagine sull'origine di una teoria scientifica. Feltrinelli. pp. 114–117.
Morchio, Renzo (2005). Una biografia della scienza. Mursia. pp. 143–146.
giovanni, battista, baliani, this, article, includes, list, general, references, lacks, sufficient, corresponding, inline, citations, please, help, improve, this, article, introducing, more, precise, citations, november, 2013, learn, when, remove, this, templa. This article includes a list of general references but it lacks sufficient corresponding inline citations Please help to improve this article by introducing more precise citations November 2013 Learn how and when to remove this template message Giovanni Battista Baliani 1582 1666 was an Italian mathematician physicist and astronomer Title page of De motu naturali gravium solidorum et liquidorum 1646 Contents 1 Career 1 1 Baliani s siphon experiment 2 Work 3 Death 4 Notes 5 Sources 6 External linksCareer editHe was born in Genoa He was governor of Savona in 1647 1649 and captain of the Republic of Genoa s archers For some 25 years he held a correspondence with Galileo Galilei about the time s most innovative scientific theories and experiments 1 Baliani s siphon experiment edit See also Barometer History On 27 July 1630 Baliani wrote a letter to Galileo explaining an experiment he had made in which a siphon led over a hill about 21 m high failed to work When the end of the siphon was opened in a reservoir the water level in that limb would sink to about 10 m above the reservoir 2 Galileo responded with an explanation of the phenomenon he proposed that it was the power of a vacuum that held the water up and at a certain height the amount of water simply became too much and the force could not hold any more like a cord that can support only so much weight 2 3 Work editAt Savona from the Priamar Fortress he repeated Galileo s experiment of the Tower of Pisa obtaining more precise measurements which allowed him to underline the effect of air attrition He also conducted an experiment to show the heat generated by a pot full of water which he had boiled after rotating it at high speed His main work is entitled De motu naturali gravium fluidorum et solidorum About the motion of bodies fluids and solids published in 1638 in it he was the first to enunciate the law of acceleration of a body and to distinguish between mass and weight citation needed He also studied tides supporting Galileo s theory that they were generated by the Earth s motion around the Sun His arguments were published by Giovanni Battista Riccioli in his Almagestum novum 1651 and later resumed by John Wallis and Isaac Newton citation needed Death editBaliani died at Genoa in 1666 Notes edit Applebaum Wilbur 2000 Encyclopedia of the Scientific Revolution From Copernicus to Newton Routledge pp 140 141 ISBN 9781135582555 in 1614 he Baliani opened a correspondence with him Galileo that lasted many years However Applebaum also calls Baliani s correspondence with Galileo intermittent For another discussion of the timing and content of letters dating from 1615 to 1639 see Crombie A C 1996 Science Art and Nature in Medieval and Modern Thought Continuum pp 224 225 ISBN 9780826431622 a b Middleton W E Knowles 1964 The history of the barometer Johns Hopkins Press p 9 Shea William R 2003 Designing Experiments amp Games of Chance The Unconventional Science of Blaise Pascal Science History Publications pp 21 ISBN 978 0 88135 376 1 Retrieved 10 October 2012 Sources editRusso Lucio 2003 Flussi e riflussi Indagine sull origine di una teoria scientifica Feltrinelli pp 114 117 Morchio Renzo 2005 Una biografia della scienza Mursia pp 143 146 External links editGrillo Fabio 1963 BALIANI Giovanni Battista Dizionario Biografico degli Italiani Volume 5 Bacca Baratta in Italian Rome Istituto dell Enciclopedia Italiana ISBN 978 8 81200032 6 Retrieved from https en wikipedia org w index php title Giovanni Battista Baliani amp oldid 1182326981, wikipedia, wiki, book, books, library,
