Comment on I can whistle at the speed of sound

• Edge004@lemm.ee ⁨3⁩ ⁨months⁩ ago

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

  source

  • 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.

    source

    • 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.

      source

      • xx3rawr@sh.itjust.works ⁨3⁩ ⁨months⁩ ago

        Probably the Youtube video in question

        source

        • -> View More Comments
    • 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!

      source
• Etterra@lemmy.world ⁨3⁩ ⁨months⁩ ago

  Sorta, but it’s a pain in the ass.

  source
• Agent641@lemmy.world ⁨3⁩ ⁨months⁩ ago

  Just dont.

  source