Hidden art could be revealed by new terahertz device

Like X-rays let doctors see the bones beneath our skin, "T-rays" could let art historians see murals hidden beneath coats of plaster or paint in centuries-old buildings, University of Michigan engineering researchers say.

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<p><a href="http://www.physorg.com/news120923331.html">Hidden art could be revealed by new terahertz device</a></p> <p>Like X-rays let doctors see the bones beneath our skin, "T-rays" could let art historians see murals hidden beneath coats of plaster or paint in centuries-old buildings, University of Michigan engineering researchers say.</p>