A charred piece of bread from Pompeii was among the objects Willard Libby used to test radiocarbon dating.
Notes on verification
Corroborated by Britannica, Encyclopedia.com, UC Berkeley, and Earth Magazine, all independently describing Pompeii bread as one of Libby's test samples for radiocarbon dating. [cascade flags: aggregator_dropped_primary_exists | tier=silver indep_score=0.875 clusters=2 claim_tier=notable]
Sources
- How Radiocarbon Dating Unlocks Ancient History | HISTORY (seed:history_and_archaeology)
- https://chemistry.berkeley.edu/news/willard-frank-libby (corroboration)
- https://www.earthmagazine.org/article/benchmarks-may-18-1952-stonehenges-age-solved-carbon-14/ (corroboration)