Assertion: star's diameter | /r/CapableOf | use interferometer
Facets:
Source sentences:
text: In 1913, the Hertzsprung-Russell diagram was developed and in 1921 Albert Michelson made the first measurements of a stellar diameter using an interferometer.
text: In 1921 Albert A. Michelson made the first measurements of a stellar diameter using an interferometer on the Hooker telescope at Mount Wilson Observatory.