Assertion: radiometric dating | /r/HasProperty | invented in 1950
Facets:
value: by the american chemist
type: OTHER
value: by a few
type: OTHER
Source sentences:
text: Radiocarbon dating was invented in the 1950s by the American chemist Willard F. Libby and a few of his students at the University of Chicago: in 1960, he won a Nobel Prize in Chemistry for the invention.