Lycurgus Cup: A Roman glass goblet made with ancient color-changing nanotechnology
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The Roman-era Lycurgus Cup has a color-changing effect depending on the light source. (Image credit: Lucas, ancientartpodcast.org via Flickr / CC BY 2.0)QUICK FACTSName: Lycurgus CupWhat it is: A glass drinking cupWhere it is from: The Roman EmpireWhen it was made: Fourth century A.D.The Lycurgus Cup is a Roman-era glass goblet that changes color from jade green to ruby red depending on if a light is shining on its front or back. But experts are unsure where the cup was found, where it was made
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