Editing 1927 (section)

=== February ===
{{Main|February 1927}}
*  [[February]] &ndash; [[Werner Heisenberg]] formulates his famous [[uncertainty principle]], while employed as a lecturer at [[Niels Bohr]]'s Institute for Theoretical Physics at the [[University of Copenhagen]].
* [[February 7]] &ndash; An attempted military coup in [[Lisbon]], Portugal, is successfully put down.<ref>{{cite book|title=Portugal Information|url=https://books.google.com/books?id=PNhjnZChOagC|year=1976|publisher=Ministry of Mass Communication, Directorate-General of Diffusion|page=x}}</ref>
* [[February 12]] &ndash; British troops land in [[Shanghai]] as a result of UK government concerns about the safety of residents in the British settlement.<ref>{{cite book|author=Sir James Handyside Marshall-Cornwall|title=Wars and Rumours of Wars: A Memoir|url=https://books.google.com/books?id=jasfAAAAMAAJ|year=1984|publisher=L. Cooper|isbn=978-0-436-27322-3|page=72}}</ref>
* [[February 14]] &ndash; A magnitude 6.1 earthquake, with a maximum [[Medvedev–Sponheuer–Karnik scale|MSK]] intensity of VII–VIII (Very strong – Damaging), kills 50 in [[Kingdom of Yugoslavia|Yugoslavia]].<ref>{{citation|title=International Handbook of Earthquake & Engineering Seismology|series=Part A, Volume 81A|chapter=A List of Deadly Earthquakes in the World: 1500–2000|first=T. R.|last=Utsu|year=2002|publisher=[[Academic Press]]|edition=First|isbn=978-0124406520|page=704}}</ref>
* [[February 19]]
** A [[general strike]] takes place in Shanghai in protest against the presence of British troops.<ref>{{cite book|title=The Chinese Economic Bulletin|url=https://books.google.com/books?id=_cMYAQAAIAAJ|year=1927|page=191}}</ref>
** In the United States, the [[Silent film|silent]] [[romantic comedy]] film ''[[It (1927 film)|It]]'' starring [[Clara Bow]], is released, popularising the concept of the "[[It girl]]".<ref>{{cite book|author=American Film Institute|title=The American Film Institute Catalog of Motion Pictures Produced in the United States|url=https://books.google.com/books?id=rlLbRAPOgP0C&pg=PA287|year=1997|publisher=University of California Press|isbn=978-0-520-20969-5|pages=388–9}}</ref>
* [[February 23]] &ndash; The U.S. [[Federal Radio Commission]] (later renamed the [[Federal Communications Commission]]) begins to regulate the use of radio frequencies.