Editing 1928 in science (section)

==Physics==
* February 28 – [[C. V. Raman]] and [[K. S. Krishnan]] discover [[Raman scattering]] in liquids.<ref>{{cite journal|last=Raman|first=C. V.|title=A new radiation|journal=Indian Journal of Physics|year=1928|volume=2|pages=387–398|url=http://hdl.handle.net/2289/2135|accessdate=2013-04-14}}</ref>
* [[Paul Dirac]] proposes the [[Dirac equation]] as a [[Special relativity|relativistic]] [[equation of motion]] for the [[wavefunction]] of the [[electron]],<ref>{{cite journal|last=Dirac|first=P. A. M.|title=The Quantum Theory of the Electron|journal=[[Proceedings of the Royal Society A]] |date=1928-02-01|volume=117|issue=778|pages=610–624|doi=10.1098/rspa.1928.0023|bibcode=1928RSPSA.117..610D|doi-access=free}}</ref> leading him to predict the existence of the [[positron]], the electron's [[antiparticle]].<ref>{{cite web|last=Dirac|first=Paul A. M.|date=1933-12-12|url=http://nobelprize.org/nobel_prizes/physics/laureates/1933/dirac-lecture.html|title=Theory of Electrons and Positrons|publisher=The Nobel Foundation|accessdate=2011-06-22| archiveurl=https://web.archive.org/web/20110604044718/http://nobelprize.org/nobel_prizes/physics/laureates/1933/dirac-lecture.html| archivedate=4 June 2011 | url-status=live}}</ref>
* [[Hermann Weyl]] publishes ''[[Gruppentheorie und Quantenmechanik]]'' in Leipzig.<ref>{{cite book|first=David|last=Speiser|chapter=''Gruppentheorie und Quantenmechanik'': The Book and its Position in Weyl's Work|date=2011|title=Crossroads: History of Science, History of Art|pages=79–99|editor-last=Williams|editor-first=Kim|place=Basel|publisher=Springer|language=en|doi=10.1007/978-3-0348-0139-3_7|isbn=978-3-0348-0138-6}}</ref>