In the late 1940s, University of Chicago chemist Willard Libby proposed calculating an object's age from its carbon-14 content or the carbon-14 content of surrounding material.
Notes on verification
Multiple independent, reputable sources (University of Chicago, ACS, Wikipedia, ETHW) confirm Libby's development of radiocarbon dating at the University of Chicago in the late 1940s. [cascade flags: wikipedia_dropped_other_sources_exist | tier=silver indep_score=0.95 clusters=3 claim_tier=everyday]
Sources
- How Radiocarbon Dating Unlocks Ancient History | HISTORY (seed:history_and_archaeology)
- https://news.uchicago.edu/explainer/what-is-carbon-14-dating (corroboration)
- https://www.acs.org/education/whatischemistry/landmarks/radiocarbon-dating.html (corroboration)
- https://ethw.org/Libby_Develops_Radiocarbon_Dating (corroboration)