Is Nanotechnology new?
No. Pottery using nano-sized particles has been used for thousands of years. An example from 4th Century AD is the Lycurgus Chalice and can be seen at the British Museum. The cup is made from glass which appears jade green in reflected light, but when light is shone directly through the glass it appears translucent red. This unusual optical effect is caused by 40ppm (parts per million) gold and 300ppm silver contained within the glass producing 70nm particles.
