1735 in science
# 1735 in science

The year 1735 in science and technology involved some significant events.

## Astronomy

* July 11 - Pluto (not known at this time) enters a fourteen-year period inside the orbit of Neptune, which will not recur until 1979.

## Biology

* Carl Linnaeus publishes his Systema Naturae.

## Chemistry

* Cobalt is discovered and isolated by Georg Brandt. This is the first metal discovered since ancient times.

## Earth sciences

* May – French Geodesic Mission (including Charles Marie de La Condamine, Pierre Bouguer, Louis Godin, Jorge Juan, Antonio de Ulloa, Joseph de Jussieu and Jean Godin) sets out for Ecuador.

## Mathematics

* Leonhard Euler solves the Basel problem, first posed by Pietro Mengoli in 1644, and the Seven Bridges of Königsberg problem.

## Meteorology

* May 22 – George Hadley publishes the first explanation of the trade winds.

## Physiology and medicine

* December 6 – The second successful appendectomy is performed by naturalised British surgeon Claudius Aymand at St George's Hospital in London (the first was in 1731).

## Births

* April 21 – Ivan Petrovich Kulibin, Russian inventor (died 1818)
* May 17 (bapt.) – John Brown, Scottish physician (died 1788)
* August 7 – Claudine Picardet, French, chemist, mineralogist, meteorologist and scientific translator (died 1820)
* September 6 – John Joseph Merlin, Liégeois-born inventor (died 1803)
* October 6 – Jesse Ramsden, English scientific instrument maker (died 1800)
* December 4 – Josephus Nicolaus Laurenti, Viennese herpetologist (died 1805)

## Deaths

* February 27 – Dr John Arbuthnot, British polymath (born 1667)
* September 27 – Peter Artedi, Swedish naturalist (born 1705)
