1643 in science
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The year 1643 in science and technology involved some significant events.
Exploration
- January 21 – Abel Tasman discovers the Tonga archipelago.
- December 25 – Captain William Mynors of the British East India Company discovers Christmas Island.{{cite web|url=http://www.environment.gov.au/parks/christmas/culture-history/island-history.html |title=Christmas Island history |publisher=Australian Government, Department of Sustainability, Environment, Water, Population and Communities |accessdate=2011-12-09 |date=2011-11-02 |url-status=dead |archiveurl=https://web.archive.org/web/20120304001240/http://www.environment.gov.au/parks/christmas/culture-history/island-history.html |archivedate=2012-03-04 }}
Meteorology
Births
- January 4 (NS) – Isaac Newton, English physicist (died 1727)
- Jean de Fontaney, French Jesuit mathematician and astronomer (died 1710)
- Pierre Dionis, French surgeon and anatomist (died 1718){{BNF|12462161b}}
Deaths
- April 9 – Benedetto Castelli, Italian mathematician (born 1578)
- November 3
- John Bainbridge, English astronomer (born 1582)
- Paul Guldin, Swiss mathematician and astronomer (born 1577)
- Sophia Brahe, Danish astronomer (born 1556)
- Gasparo Berti, Italian mathematician, astronomer and physicist (born c. 1600)
- Walter Warner, English scientist (born 1563)