Samo Burja@SamoBurja• over 5 years ago

Replying to @SamoBurja

The Lycurgus Cup is a 4th century Roman glass cup that changes color depending on which side you shine light on. We don’t know the process that was used to make it, although we have tried to reverse-engineer the results with our own technology today: https://t.co/wUFHexdjq7 2/5