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Wednesday, November 11, 2009 |
Wednesday, November 11, 2009 |
Photo: A Blacker Black: Darkest Known Material CreatedThe object at the far left is a "black standard" used by the U.S. National Institute of Standards and Technology. The object on the far right is a piece of glassy carbon. Photograph courtesy Rensselaer Polytechnic Institute
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ADVERTISEMENTNATIONAL GEOGRAPHIC'S PHOTO OF THE DAY |
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