Sulphur in just one hair could blow a terrorist's alibi
Wednesday, May 27, 2009 - 10:35
in Physics & Chemistry
A group of researchers from the LGC Chemical Metrology Laboratory in the United Kingdom and the University of Oviedo, Spain, have come up with a method to detect how the proportions of isotopes in a chemical element (atoms with an equal number of protons and electrons but different numbers of neutrons) vary throughout the length of a single hair.