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(Phys.org) —In the 4th century, the Romans built a special glass cup, called the Lycurgus cup, that changes colors depending on which way the light is shining through it. The glass is made of finely ground silver and gold dust that produces a dichroic, or color-changing, effect. Although the makers of the Lycurgus cup likely did not know the mechanism responsible for the color-changing glass, today scientists recognize the mechanism as surface plasmon resonance, and it is a phenomenon that continues to hold great scientific interest.
Zazzle Space market place
(Phys.org) —In the 4th century, the Romans built a special glass cup, called the Lycurgus cup, that changes colors depending on which way the light is shining through it. The glass is made of finely ground silver and gold dust that produces a dichroic, or color-changing, effect. Although the makers of the Lycurgus cup likely did not know the mechanism responsible for the color-changing glass, today scientists recognize the mechanism as surface plasmon resonance, and it is a phenomenon that continues to hold great scientific interest.
Zazzle Space market place
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