Editing 1709 in science (section)

==Technology==
* January 10 – [[Industrial Revolution]]: [[Abraham Darby I]] successfully produces [[cast iron]] using [[coke (fuel)|coke fuel]] at his [[Coalbrookdale]] [[blast furnace]] in [[Shropshire]], England.<ref>{{cite journal|last=Mott|first=R. A.|title=The earliest use of coke for ironmaking|journal=The Gas World, coking section supplement|volume=145|pages=7–18|date=5 January 1957}}</ref><ref>{{cite book|first=Arthur|last=Raistrick|title=Dynasty of Ironfounders: the Darbys and Coalbrookdale|location=London|publisher=Longmans, Green|year=1953|page=34}}</ref><ref name="Cassell's Chronology">{{cite book|last=Williams|first=Hywel|title=Cassell's Chronology of World History|location=London|publisher=Weidenfeld & Nicolson|year=2005|isbn=0-304-35730-8|pages=[https://archive.org/details/cassellschronolo0000will/page/292 292]|url=https://archive.org/details/cassellschronolo0000will/page/292}}</ref>
* February 5 – Dramatist [[John Dennis (dramatist)|John Dennis]] devises the [[thundersheet]] as a new method of producing theatrical thunder for his tragedy ''[[Appius and Virginia (1709 play)|Appius and Virginia]]'' at the [[Theatre Royal, Drury Lane]], London.<ref>{{cite book|authorlink=Nigel Rees|last=Rees|first=Nigel|title=Why Do We Say ...?|year=1987|isbn=0-7137-1944-3}}</ref>
* March 28 – [[Johann Friedrich Böttger]] reports the first production of [[hard-paste porcelain]] in Europe, at [[Dresden]].
* July 13 – [[Johann Maria Farina]] founds [[Farina gegenüber]], the first [[Eau de Cologne]] and perfume factory in [[Cologne]], Germany.
* August 8 – [[Hot air balloon]] of [[Bartholome de Gusmão]] flies in Portugal.
* A collapsible [[umbrella]] is introduced in Paris.<ref>{{cite web|title=The History of Umbrellas|url=http://www.oakthriftumbrellas.com/pages/umbrellas4.htm|publisher=Oakthrift Corporation|accessdate=2011-12-22|archive-url=https://web.archive.org/web/20130902053708/http://www.oakthriftumbrellas.com/pages/umbrellas4.htm|archive-date=2013-09-02|url-status=dead}}</ref>