The material they used was a thin film of indium-tin-oxide, which forms most mobile phone screens. The materials reflectance is ultrafast.
This material is called metamaterial – one that is engineered to have properties not found in nature and when coupled with spatial control, could create new technologies and even analogues for studying phenomena like black holes.
TheYiddler 1 points 2 years ago
Pronouns exist in a quantum superposition. Until the site is archived, they are all states at once.