August 31, 2013

Lycergus Cup - Ancient Roman Nanotechnology

1600 year old Roman goblet - Lycergus Cup


Were the Romans pioneers in nanotechnology?

Fourth century Roman artifact containing tiny particles of gold and silver 50 nanometers in diameter changes color.

"When hit with light, electrons belonging to the metal flecks vibrate in ways that alter the color depending on the observer’s position." ~ Smithsonian Magazine 



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