This Day in Jewish History / Immigrant sons make biochemistry breakthrough
Martin Kamen and Sam Ruben identify the isotope carbon-14, making it possible to date artifacts.
On February 27, 1940, the physicists Martin Kamen and Sam Ruben made the first identification of the isotope carbon-14 in a laboratory at the University of California, Berkeley. The discovery not only made it possible for archaeologists and others to date artifacts containing organic material, but, even more essentially, the use of carbon-14 as a radioactive marker transformed the study...
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