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1914 in science
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==Chemistry== * [[Theodore William Richards|T. W. Richards]] finds variations between the atomic weight of lead from different mineral sources, attributable to variations in [[Isotope|isotopic]] composition due to different radioactive origins.<ref>{{cite book|last=Scerri|first=Eric R.|year=2007|title=The Periodic Table|publisher=Oxford University Press|pages=176β9|isbn=0-19-530573-6}}</ref><ref>{{cite web|url=https://www.nobelprize.org/nobel_prizes/chemistry/laureates/1921/soddy-lecture.html|title=Nobel Lecture:The Origins of the Conception of Isotopes|first=Frederick|last=Soddy|date=1922-12-12|accessdate=2023-04-25|website=The Nobel Prize}}</ref>
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