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Tue, 7 Sep 10
Listening to ancient colors: New technique may help restorers identify decades-old pigments
http://feeds.sciencedaily.com/~r/sciencedaily/~3/BfA1MCVm6ss/100902101627.htm
A team of chemists has discovered that a technique known as photoacoustic infrared spectroscopy could be used to identify the composition of pigments used in art work that is decades or even centuries old. Pigments give artist's materials color, and they emit sounds when light is shone on them.