Bernhard Riemann, a German mathematician, submits his habilitation thesis Ueber die Darstellbarkeit einer Function durch eine trigonometrische Reihe ("About the representability of a function by a trigonometric series"), in which he describes the Riemann integral. It is published by Richard Dedekind in 1867.[4]
Medicine
April–May – Dr John Snow traces the source of one outbreak of cholera in London (which kills 500) to a single water pump, validating his theory that cholera is water-borne, and forming the starting point for epidemiology.
^Radomski, Teresa (2005). "Manuel García (1805–1906): a bicentenary reflection" (PDF). Australian Voice. 11: 25–41. Retrieved 2012-02-07.
^Frerichs, Ralph R. (2001-08-05). "Who first discovered Vibrio cholera?". UCLA School of Public Health. Archived from the original on 19 January 2008. Retrieved 30 December 2007. Pacini's 1854 publication was titled "Osservazioni microscopiche e deduzioni patologiche sul cholera asiático" ("Microscopical observations and pathological deductions on cholera").
^Griggs, Frank (May 2006). "The Inspirations of a German Immigrant: Albert Fink" (PDF). Structure. National Council of Structural Engineers Associations: 52–4. Retrieved 2011-08-16.
^Wood, R. D. (1975). The Calotype Patent Lawsuit of Talbot v. Laroche 1854. Bromley, Kent: privately published. ISBN 0-9504377-0-0. Archived from the original on 2008-01-02. Retrieved 2010-10-18.
^Penguin Pocket On This Day. Penguin Reference Library. 2006. ISBN 0-14-102715-0.
^"Copley Medal | British scientific award". Encyclopedia Britannica. Retrieved 23 July 2020.
^Haines, Catharine M. C. (2001). International Women in Science: A Biographical Dictionary to 1950. Santa Barbara: ABC-CLIO. p. 12. ISBN 978-1-57607-090-1.