大英博物館さんのインスタグラム写真 - (大英博物館Instagram)「Swipe to see the colours change✨👉 The Lycurgus Cup is the only complete example of colour-changing dichroic glass to survive from ancient Rome. The dazzling effect is achieved because the glass contains nanoparticles of gold and silver – this makes it turn from opaque green to translucent red when light is shone through it. Made in the 4th century, the cup is decorated with a high-relief design depicting a mythical story where Lycurgus, king of Thrace, is trapped in the branches of a vine. You can see this marvellous object in Room 41. #BritishMuseum #London #Roman #history #glass #nanopoarticles #gold #silver #science #AncientRome」3月31日 17時42分