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August 07, 2003

Lead dating

Israeli scientists have worked out a clever way to date lead objects using superconductivity:

Lead is stable in many environments and corrodes only very slowly into lead oxide and lead carbonate. It becomes a superconductor when cooled below 7.2 Kelvin, whereas the corrosion products do not.

Posted by Ghost of a flea at August 7, 2003 08:56 AM