1833 in science

	… 1823; 1824; 1825; 1826; 1827; 1828; 1829; ; 1830; 1831; 1832; 1833; 1834; 1835; 1836; ; 1837; 1838; 1839; 1840; 1841; 1842; 1843 …;
	Art; Archaeology; Architecture; Literature; Music; Philosophy; Science; +...

The year 1833 in science and technology involved some significant events, listed below.

Astronomy[edit]

November 12–13 – A spectacular occurrence of the Leonid meteor shower is observed over Alabama.

probable date – Paul Gerwien proves the Bolyai–Gerwien theorem formulated by Farkas Bolyai: that any two simple polygons of equal area are equidecomposable.

Henry Witham publishes The Internal Structure of Fossil Vegetables found in the Carboniferous and Oolitic deposits of Great Britain in Edinburgh.

William Beaumont publishes Experiments and Observations on the Gastric Juice and the Physiology of Digestion.
Charles Bell publishes The Hand: its Mechanism and Vital Endowments as Evincing Design, the fourth Bridgewater Treatise.
Marshall Hall coins the term "reflex" for a muscular reaction.
Jean Lobstein proposes use of the term arteriosclerosis.^[2]
Johannes Peter Müller begins publication of his major physiology textbook Handbuch der Physiologie des Menschen.
Anselme Payen discovers diastase (the first enzyme identified).

January 19 – Alfred Clebsch (died 1872), German mathematician.
February 26 – Georges Pouchet (died 1894), French comparative anatomist.
March 14 – Lucy Hobbs Taylor (died 1910), American dentist.
March 23 – Karl Friedrich Otto Westphal (died 1890), German psychiatrist.
March 25 – Fleeming Jenkin (died 1885), English electrical engineer.
May 5 – Ferdinand von Richthofen (died 1905), German geographer.
June 29 – Peter Waage (died 1900), Norwegian chemist.
October 9 – Eugen Langen (died 1895), German mechanical engineer.
October 17 – Paul Bert (died 1886), French physiologist.
October 21 – Alfred Nobel (died 1896), Swedish inventor.
November 27 - Émile Vallin (died 1924), French military physician.^[8]
December 2 – Friedrich Daniel von Recklinghausen (died 1910), German pathologist.

^ Hyman, Anthony (1982). Charles Babbage: Pioneer of the Computer. Oxford University Press. pp. 177–8. ISBN 978-0-19-858170-3.
^ Tedgui, Alain; Mallat, Ziad (2006). "Cytokines in Atherosclerosis". Physiological Reviews. 86 (2). American Physiological Society: 515–581. doi:10.1152/physrev.00024.2005. PMID 16601268. Archived from the original on 2013-07-13. Retrieved 2011-06-23.
^ "Obed Hussey". Ohio History Central: An Online Encyclopedia of Ohio History. 2005-07-01. Archived from the original on 22 June 2011. Retrieved 2011-05-12.
^ Greeno, Follett L., ed. (1912). Obed Hussey, Who, of All Inventors, Made Bread Cheap. Archived from the original on 2013-01-19. Retrieved 2011-05-12.
^ "Adrian Stephens". Archived from the original on 2012-10-12. Retrieved 2012-06-22.
^ Lee, Charles E. (1949). "Adrian Stephens, inventor of the steam whistle". Transactions of the Newcomen Society. 27: 163–73. doi:10.1179/tns.1949.015.
^ "Copley Medal | British scientific award". Encyclopedia Britannica. Retrieved 22 July 2020.
^ L. Vaillard; Agathe Floderer; Alexandre Wauthier. "Vallin Émile Arthur". cths.fr (in French). Comité des travaux historiques et scientifiques. Retrieved 11 February 2021.