Comment on I can whistle at the speed of sound
Edge004@lemm.ee 3 months agoThe medium that the laser goes through could slow it down, but it would still be insanely fast.
Comment on I can whistle at the speed of sound
Edge004@lemm.ee 3 months agoThe medium that the laser goes through could slow it down, but it would still be insanely fast.
dave@feddit.uk 3 months ago
It would also still be the speed of light. Always is, unless you specify ‘in a vacuum’ every time.
tacosplease@lemmy.world 3 months ago
Adding to the fun - The light is still going the same speed within the medium, but it’s bumping into more things. Those collisions divert the light, lengthening the distance it travels through something like 1 cm of glass vs 1 cm in a vacuum. It changes the time it takes to travel through glass rather than the speed at which the light is moving.
At least that’s what I remember from a YouTube video.
xx3rawr@sh.itjust.works 3 months ago
Probably the Youtube video in question
tacosplease@lemmy.world 3 months ago
Yes that’s it! Thanks for the link!!
kuberoot@discuss.tchncs.de 3 months ago
The real fun starts when things move faster than the speed of light, that’s when you get Cherenkov radiation!