Jean-Baptiste Baliani led face a career of politician to the service of the République of Genoa starting from 1611, prefect of the fortress of Savone (1611), governor of Sarzana (1623), member of the Senate (1624) and governor of Soaps (1647 - 1649) and a career of scientist: professor of the college of the Jesuit S in Genoa.
Friend and correspondent of Galileo as of 1614 and professor of Cassini in Genoa, it were strongly interested in the debates on nature of the movement and published in 1638 a treaty, of motu naturali gravium solidum on this subject . In this treaty, he discovered certain properties taken again by Galileo in his Dialog on the two great systems of the world which appeared the same year. In particular it stated the law of the correctly falls of the bodies, studied the movements on tilted plans and the oscillations of the pendulums. It also took part in the description of the atmospheric pressure and was interested of close with the hydraulic phenomena (construction of aqueducts, water flow).
- Serge Moscovici, the experiment of the movement: Jean-Baptiste Baliani, disciple and critical of Galileo , Hermann, 1967.
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