Editing 1913 in science (section)

==Chemistry==
* February – Daniel J. O'Conor and Herbert A. Faber file for a United States [[patent]] on the [[Composite material|composite]] plastic [[laminate]] [[Formica (plastic)|Formica]].<ref>{{cite web|url=http://www.formica.com/ContentPage.aspx?code=PAG_OURLEGACY_EARLYYEARS |title=Our Legacy – Early Years |publisher=Formica Corporation |accessdate=2012-06-08 |url-status=dead |archiveurl=https://web.archive.org/web/20110324075223/http://www.formica.com/ContentPage.aspx?code=PAG_OURLEGACY_EARLYYEARS |archivedate=2011-03-24 }}</ref>
* [[Elmer McCollum]] and [[Marguerite Davis]] at the [[University of Wisconsin–Madison]], and [[Lafayette Mendel]] and [[Thomas Burr Osborne (chemist)|Thomas Burr Osborne]] at [[Yale University]] independently discover [[Vitamin A]].<ref>Original papers published in ''[[Journal of Biological Chemistry]]''. {{cite journal|url=http://www.clinchem.org/content/43/4/680.full|title=Vitamine—vitamin: The early years of discovery|author=Rosenfeld, Louis|journal=Clinical Chemistry|date=April 1997|volume=43|issue=4|pages=680–685|publisher=American Association for Clinical Chemistry|access-date=2016-07-24|archive-url=https://web.archive.org/web/20160604072512/http://www.clinchem.org/content/43/4/680.full|archive-date=2016-06-04|url-status=dead|doi=10.1093/clinchem/43.4.680|doi-access=free|pmid=9105273}}</ref>
* [[Protactinium]] is first identified by [[Oswald Helmuth Göhring]] and [[Kasimir Fajans]]. 
* [[Henry Moseley]] shows that nuclear charge is the real basis for numbering the elements and discovers a systematic relation between [[wavelength]] and [[atomic number]] by using [[x-ray]] [[electromagnetic spectrum|spectra]] obtained by diffraction in crystals.<ref>{{cite web|last=Weisstein|first=Eric W.|title=Moseley, Henry (1887–1915)|work=Eric Weisstein's World of Scientific Biography|publisher=Wolfram Research Products|year=1996|url=http://scienceworld.wolfram.com/biography/Moseley.html|accessdate=2007-03-25}}</ref> [[Frederick Soddy]] proposes that [[isotope]]s (a term suggested by [[Margaret Todd (doctor)|Margaret Todd]] which he introduces) may have differing atomic weights<ref>{{cite web|title=Frederick Soddy: The Nobel Prize in Chemistry 1921|work=Nobel Lectures, Chemistry 1901–1921|publisher=Elsevier|year=1966|url=http://nobelprize.org/nobel_prizes/chemistry/laureates/1921/soddy-bio.html|accessdate=2007-03-25}}</ref> while he and Fajams independently propose the [[radioactive displacement law of Fajans and Soddy]].<ref>{{cite journal|first=Kasimir|last=Fajans|year=1913|title=Über eine Beziehung zwischen der Art einer radioaktiven Umwandlung und dem elektrochemischen Verhalten der betreffenden Radioelemente|trans-title=On a relation between the type of radioactive transformation and the electrochemical behavior of the relevant radioactive elements|journal=Physikalische Zeitschrift|volume=14|pages=131–136}}</ref>
* [[J. J. Thomson]] shows that charged subatomic particles can be separated by their mass-to-charge ratio, the technique known as [[mass spectrometry]].<ref>{{cite web|title=Early Mass Spectrometry |work=A History of Mass Spectrometry |publisher=Scripps Center for Mass Spectrometry |year=2005 |url=http://masspec.scripps.edu/MSHistory/timelines/1897.php |accessdate=2007-03-26 |archiveurl=https://web.archive.org/web/20070303134854/http://masspec.scripps.edu/MSHistory/timelines/1897.php |archivedate=2007-03-03 |url-status=dead }}</ref>
* The [[Bergius process]] is first developed and patented by German chemist [[Friedrich Bergius]].