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1622 in science
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==Mathematics== * The [[slide rule]] is invented by [[William Oughtred]] ([[1574 in science|1574]]β[[1660 in science|1660]]), an English mathematician, and later becomes the calculating tool of choice until the [[electronic calculator]] takes over in the early 1970s.<ref>{{cite web |title=Oughtred Society Slide Rule History|url=http://www.oughtred.org/history.shtml|publisher=The Oughtred Society|date=2007-09-15|accessdate=2007-12-29| archiveurl=https://web.archive.org/web/20071221021607/http://www.oughtred.org/history.shtml| archivedate=21 December 2007 <!--Added by DASHBot-->}}</ref>
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