Dubrovnik, 18 May 1711 – Milan,
13 February 1787

Croatian scientist and philosopher, astronomer, mathematician, physicist, surveyor, writer, archaeologist, and a diplomat.


- 1741 – ordained as a Jesuit priest
- 1741 - presented the idea of geoid being the shape of the Earth
- 1742 - carried out research into repairing cracks in St Peter’s Basilica in Rome
- 1745-1748 - published De viribus vivis (1745), De aestu maris (1747) and De lumine (1748)
- 1750-1752 - measured the degree along the Rome-Rimini meridian in the Ecclesiastical State, compiled astronomical data from which Maire made the first precise map of the Ecclesiastical State; published an exhaustive scientific report, De
litteraria expeditione per Pontificiam ditionem… including all his geophysical research, published in its entirety in 1755, in 1757 as a summary, in 1760 with a statistical supplement and in 1770 in its entirety translated into French.
- 1751 - constructed surveying tripods
- 1755 - published the results of his measurements of meridian degrees, and also the report De litteraria expeditione per Pontificiam ditionem…
- 1758 – published the Theory of Natural Philosophy (Viennese edition)
- 1761 - travelled to Istanbul and investigated the ruins of the ancient city of Troy
- 1763 -published the second, extended Venetian edition of the Theory of Natural Philosophy
- 1764 – was appointed Professor of Mathematics at Pavì
- 1770 - constructed the pendulum clock and was appointed Professor in Milan and Director of the Brera Observatory
- 1773- constructed the final version of his vitrometer with a variable glass prism; was relieved of his duty as the Director of the Observatory in Brera. The Jesuit orderwas abolished at this time.
- 1774 - In Paris, he was granted French citizenship and became Director of Optics for the French Navy
1785 - published Opera pertinentia ad opticam et astronomiam (Works related to optics and astronomy)

1751 - constructed surveying tripods

... improved the accuracy of calculating the whole triangulation network