Editing 1845 in science (section)

==Technology==
* July 26–August 10 – [[Isambard Kingdom Brunel]]’s iron [[steamship]] ''[[SS Great Britain|Great Britain]]'' makes the [[Transatlantic Crossing]] from [[Liverpool]] to [[New York City|New York]], the first [[Propeller|screw propelled]] vessel to make the passage.<ref>{{cite book|last=Fox|first=Stephen|year=2003|title=Transatlantic: Samuel Cunard, Isambard Brunel, and the Great Atlantic Steamships|publisher=HarperCollins|isbn=978-0-06-019595-3|url-access=registration|url=https://archive.org/details/transatlanticsam00foxs}}</ref><ref>{{cite web|title=''Great Britain'' |url=http://www.theshipslist.com/pictures/Greatbritain.htm |work=The Ships List |accessdate=2010-10-01 |url-status=dead |archiveurl=https://web.archive.org/web/20100528131641/http://www.theshipslist.com/pictures/Greatbritain.htm |archivedate=2010-05-28 }}</ref>
* The [[saxhorn]] family of valved [[brass instrument]]s is [[patent]]ed by [[Adolphe Sax]] in France.