Jean-Christophe Fatio de Duillier (17 November 1656 – 18 October 1720) was a

Genevan Geneva ( ; french: Genève ) frp, Genèva ; german: link=no, Genf ; it, Ginevra ; rm, Genevra is the List of cities in Switzerland, second-most populous city in Switzerland (after Zürich) and the most populous city of Romandy, the French-speaki ...

engineer, politician, and

natural philosopher Natural philosophy or philosophy of nature (from Latin ''philosophia naturalis'') is the philosophical study of physics Physics is the natural science that studies matter, its fundamental constituents, its motion and behavior throu ...

, who became

Fellow of the Royal Society Fellowship of the Royal Society (FRS, ForMemRS and HonFRS) is an award granted by the judges of the Royal Society of London to individuals who have made a "substantial contribution to the improvement of natural science, natural knowledge, incl ...

in 1706.Jean-Christophe Fatio de Duillier
in the

Historical Dictionary of Switzerland The ''Historical Dictionary of Switzerland'' is an encyclopedia on the history of Switzerland that aims to take into account the results of modern historical research in a manner accessible to a broader audience. The encyclopedia is publishe ...

. He was the elder brother of Nicolas Fatio. He was elected F.R.S. on 3 April 1706 and published in the ''

Philosophical Transactions ''Philosophical Transactions of the Royal Society'' is a scientific journal published by the Royal Society. In its earliest days, it was a private venture of the Royal Society's secretary. It was established in 1665, making it the first journa ...

'' (xxv. 2241–6) a description of an

eclipse of the sun A solar eclipse occurs when the Moon passes between Earth and the Sun, thereby obscuring the view of the Sun from a small part of the Earth, totally or partially. Such an alignment occurs during an eclipse season, approximately every six month ...

which he had observed at

Geneva Geneva ( ; french: Genève ) frp, Genèva ; german: link=no, Genf ; it, Ginevra ; rm, Genevra is the List of cities in Switzerland, second-most populous city in Switzerland (after Zürich) and the most populous city of Romandy, the French-speaki ...

on 12 May of that year. He died at Geneva in October 1720, survived by his wife Catherine, daughter of Jean Gassand of Forealquiere in

Provence Provence (, , , , ; oc, Provença or ''Prouvènço'' , ) is a geographical region and historical province of southeastern France, which extends from the left bank of the lower Rhône to the west to the Italian border to the east; it is bor ...

, to whom he was married in 1709. He left no issue.

References

*. ;Attribution {{DEFAULTSORT:Fatio, Jean Christophe 17th-century scientists from the Republic of Geneva 17th-century astronomers 18th-century scientists from the Republic of Geneva 18th-century astronomers 17th-century politicians from the Republic of Geneva 18th-century politicians from the Republic of Geneva 1656 births 1720 deaths Fellows of the Royal Society