Purdue carbon dating
Within a few months, Henri Becquerel found that both uranium metal and salts of this element gave off a different form of radiation, which could also pass through solids.
International trade expanded rapidly when coal-fed steam engines were built for the railways and steamships.
C., for example---the true date lying somewhere in that range.
The precision of a radiocarbon date tells how narrow the range of dates is.
The technology involved is fascinating and impressive.
Measurements can be made with a high degree of precision. Aardsma submitted a sample from a reed mat known to be over 5,000 years old.