Editing 1811 in science (section)

==Chemistry==
* [[Bernard Courtois]] discovers [[iodine]].<ref>{{cite journal|last=Swain|first=Patricia A.|url=http://www.scs.uiuc.edu/~mainzv/HIST/awards/OPA%20Papers/2007-Swain.pdf|title=Bernard Courtois (1777–1838), famed for discovering iodine (1811), and his life in Paris from 1798|journal=Bulletin for the History of Chemistry|volume=30|year=2005|pages=103–11|accessdate=2011-05-24| archiveurl= https://web.archive.org/web/20100714110757/http://www.scs.uiuc.edu/~mainzv/HIST/awards/OPA%20Papers/2007-Swain.pdf| archivedate=July 14, 2010<!--Added by DASHBot-->}}</ref>
* [[Joseph Louis Gay-Lussac]] and [[Louis Jacques Thénard]] publish ''Recherches Physico-Chimiques, faites sur la pile; sur la préparation chimique et les propriétés du potassium et du sodium; sur la décomposition de l'acide boracique; sur les acides fluorique, muriatique et muriatique oxigéné; sur l'action chimique de la lumière; sur l'analyse végétale et animale, etc.'' in [[Paris]].
* [[Amedeo Avogadro]] proposes [[Avogadro's law]], that equal volumes of gases under constant temperature and pressure contain equal number of molecules.<ref>{{cite web |title=Michael Faraday |work=Famous Physicists and Astronomers |url=http://www.phy.hr/~dpaar/fizicari/xfaraday.html |accessdate=2007-03-12}}</ref>