Editing 1825 in science (section)

==Technology==
* August – The [[wire]]-[[Wire rope|cable]] [[suspension bridge]] between [[Tournon-sur-Rhône]] and [[Tain-l'Hermitage]], designed by [[Marc Seguin]], opens.<ref>{{cite book|url=https://archive.org/details/amemoirsuspensi01drewgoog|title=A Memoir of Suspension Bridges, Comprising the History of their Origin and Progress|last=Drewry|first=Charles Stewart|year=1832|publisher=Longman, Rees, Orme, Brown, Green & Longman|location=London|pages=[https://archive.org/details/amemoirsuspensi01drewgoog/page/n128 110]–114|access-date=2011-04-18}}</ref>
* September 27 – The world's longest railway to be worked by [[steam locomotive]]s at this date, the [[Stockton and Darlington Railway]], opens in [[northern England]].
* October 26 – The [[Erie Canal]] officially opens over {{convert|363|mi|km}} from [[Albany, New York]], to [[Lake Erie]].<ref>{{citation|title=The Story of the New York State Canals|first=Roy G.|last=Finch|year=1925|access-date=2012-09-25|publisher=New York State Canal Corporation|url=http://www.canals.ny.gov/history/finch_history.pdf|format=PDF}}</ref>
* [[English people|English]] inventor [[William Sturgeon]] describes the first [[electromagnet]].<ref>{{cite journal|first1=William|last1=Gee|first2=Frank A. J. L.|last2=James|title=Sturgeon, William (1783–1850)|journal=[[Oxford Dictionary of National Biography]]|year=2004|url=http://www.oxforddnb.com/view/article/26748|access-date=2012-01-05|doi=10.1093/ref:odnb/26748|url-access=subscription}} {{ODNBsub}}</ref>