Editing 1801 in science (section)

==Technology==
* July – [[Eli Whitney]] demonstrates before the [[United States Congress]] the advantages of the system of [[interchangeable parts]] in the manufacture of firearms.<ref>{{cite web|last=Van Dusen|first=Albert E.|year=2003|title=Eli Whitney|work=Laptop Encyclopedia of Connecticut History|publisher=CTHeritage.org|url=http://www.ctheritage.org/encyclopedia/ct1763_1818/whitney.htm|accessdate=2011-12-24}}</ref>
* October 20 – First patent for the Fourdrinier continuous [[paper machine]] in England.
* December 24 – [[Cornish people|Cornish]] engineers [[Richard Trevithick]] and [[Andrew Vivian]] demonstrate "Puffing Devil", their steam-powered road locomotive, in [[Camborne]], England.<ref>{{cite book|title=British Steam|publisher=Igloo Books|date=2016|pages=10–13}}</ref>
* [[Joseph-Marie Jacquard]] develops the [[Jacquard Loom]], in which holes strategically punched in a pasteboard card direct the movement of needles, thread, and fabric.
* The first iron (chain) [[suspension bridge]] is built by [[James Finley (engineer)|James Finley]] at Jacob's Creek in [[Westmoreland County, Pennsylvania]].<ref>{{cite web|title=Iron Wire of the Wheeling Suspension Bridge|publisher=Smithsonian Museum Conservation Institute|url=http://www.si.edu/mci/english/research/past_projects/iron_wire_bridge.html| accessdate=18 April 2011<!--Added by DASHBot-->| archiveurl=https://web.archive.org/web/20110430064802/http://www.si.edu/mci/english/research/past_projects/iron_wire_bridge.html|archivedate=30 April 2011<!--Added by DASHBot-->}}</ref>
* The [[xaenorphica]], a bow-stringed instrument with a keyboard, is invented by C. L. Röllig of [[Vienna]] (the strings are set in vibration by [[violin]] bows).