Editing 1723 in science (section)

==Geophysics==
* [[George Graham (clockmaker)|George Graham]] discovers diurnal variation in [[Earth's magnetic field]].<ref>{{cite journal|last=Graham|first=George|year=1724|title=An Account of Observations Made of the Variation of the Horizontal Needle at London, in the Latter Part of the Year 1722, and Beginning of 1723|journal=[[Philosophical Transactions of the Royal Society]]|volume=33|pages=96–107|doi=10.1098/rstl.1724.0020}}</ref><ref>{{cite journal|last=Graham|first=George|year=1724|title=Observations of the Dipping Needle, Made at London, in the Beginning of the Year 1723|journal=Phil. Trans.|volume=33|pages=332–339|doi=10.1098/rstl.1724.0062|doi-access=free}}</ref>
* [[Antoine de Jussieu]] publishes ''De l'Origine et des usages de la Pierre de Foudre'' on the origins of [[fossil]]s, prehistoric [[stone tool]]s and [[meteorites]].<ref>{{cite web|url=http://rr0.org/data/1/9/7/8/Westrum_TheCaseOfMeteorites_SocialStudiesOfScience/03/index_fr.html|title=Les pierres de foudre|accessdate=2011-10-18}}</ref>