20. The Lycurgus Cup’s Nanotechnology
The remarkable Lycurgus Cup, crafted in ancient Rome, is famous for its ability to change color depending on how light strikes it. This effect was achieved using tiny nanoparticles of gold and silver suspended in the glass—a technology centuries ahead of its time.
The knowledge behind this ancient nanotechnology vanished, and only in recent years has modern science begun to replicate such optical marvels.
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