Radiocarbon dating animation

carried out on the ship's cargo--salted catfish steaks stored in Greek clay amphorae--has already shown that the vessel sank during the 4th or 5th century BC, making it the oldest wreck to be discovered in the Black Sea region.A Greek ship that may once have supplied fish to Alexander the Great's army and the markets of Athens has been found off the coast of Bulgaria by Dr Robert Ballard, the deep-sea explorer who found the wrecks of the Titanic and Bismarck.Tests against sequoia with known dates from their tree rings showed radiocarbon dating to be reliable and accurate.The technique revolutionised archaeology, palaeontology and other disciplines that dealt with ancient artefacts.Libby resigned from the AEC in 1959 to become Professor of Chemistry at University of California, Los Angeles (UCLA), a position he held until his retirement in 1976.

A 1927 chemistry graduate of the University of California at Berkeley, from which he received his doctorate in 1933, he studied radioactive elements and developed sensitive Geiger counters to measure weak natural and artificial radioactivity.Atomic Energy Commission (AEC) Chairman Gordon Dean appointed Libby to its influential General Advisory Committee (GAC) in 1950.In 1954, he was appointed an AEC commissioner by President Dwight D.The most promising type was a barrier made of powdered nickel developed by Edward O.Norris of the Jelliff Manufacturing Corporation and Edward Adler from the City College of New York, which became known as the "Norris-Adler" barrier by late 1942.

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