▲ 1144 ▼ I can whistle at the speed of sound (sh.itjust.works) submitted 2 years ago by sjmarf@sh.itjust.works to c/science_memes@mander.xyz 119 comments fedilink hide all child comments
[–] Jumuta@sh.itjust.works 7 points 2 years ago* (last edited 2 years ago) just shine a laser through a thing of zircon (n=index of refraction=1.923~2) so speed of the laser in the zircon = c/n ~c/2 permalink fedilink source parent