December 13, 1920 in History
Event:
F Pease's interferometer measures 1st stellar diameter (Betelgeuse)




Related Topics:
diameter
measures
Pease
stellar

Related Year:
1920

Related Events:
December 13





 More Notable Events on December 13:
1990 Heavy earthquake strikes Sicily, 18 die
1978 Susan B. Anthony dollar, 1st U.S. coin to honor a woman, issued
1975 1st time Saturday Night Live uses a time delay - Richard Pryor as host
1974 Malta becomes a republic
1961 Beatles sign a formal agreement to be managed by Brian Epstein