Is Nano a No-No? Nanotechnology Advances into Buildings

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Nanotechnology deals with materials at the level of 1 to 100 nanometers, with a nanometer (nm) being a billionth of a meter. Something so small is virtually unimaginable, so scientists have bent over backwards to try to put it in perspective. A man’s beard grows a few nanometers in the time it takes him to raise a razor to his face Each of those hairs is 80,000 nanometers thick. The ratio of a meter to a nanometer is the same as that of the Earth to a marble. The smallest things visible to the naked human eye are 10,000 nanometers.

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