Editing 1835 in science (section)

==Technology==
* August – [[William Fox Talbot|H. Fox Talbot]] exposes the world's first known [[Negative (photography)|photographic negatives]] at [[Lacock Abbey]] in [[Wiltshire]], [[England]].<ref>{{cite book|first=Patrick|last=Robertson|title=The Shell Book of Firsts|location=London|publisher=Ebury Press|year=1974|isbn=0-7181-1279-2|pages=127–8}}</ref>
* September 12 – A [[Prussia]]n [[patent]] is granted to [[Wilhelm Friedrich Wieprecht]] and Carl Moritz<ref>[http://vsl.co.at/en/70/3139/3153/3154/5493.vsl Vienna Symphonic Library > Vienna Academy > Brass > Tubas > Bass tuba > History.]</ref> for a valved bass [[tuba]].
* [[Samuel Colt]] invents the [[revolver]].
* [[Joseph Henry]] invents the electric [[relay]].<ref>{{cite web|title=The electromechanical relay of Joseph Henry|publisher=Georgi Dalakov|url=http://history-computer.com/ModernComputer/Basis/relay.html|accessdate=2013-10-03}}</ref>
* [[Samuel Morse]] develops the [[Morse code]].