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[-] 10_0@lemmy.ml 31 points 1 month ago
[-] chiliedogg@lemmy.world 32 points 1 month ago

I'd be more impressed if they didn't.

[-] SendMePhotos@lemmy.world 6 points 1 month ago
[-] Edge004@lemm.ee 11 points 1 month ago

The medium that the laser goes through could slow it down, but it would still be insanely fast.

[-] dave@feddit.uk 20 points 1 month ago

It would also still be the speed of light. Always is, unless you specify ‘in a vacuum’ every time.

[-] tacosplease@lemmy.world 12 points 1 month 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.

[-] kuberoot@discuss.tchncs.de 2 points 1 month ago

The real fun starts when things move faster than the speed of light, that's when you get Cherenkov radiation!

[-] Agent641@lemmy.world 1 points 1 month ago
this post was submitted on 25 Jul 2024
1105 points (100.0% liked)

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