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I can whistle at the speed of sound (sh.itjust.works)
submitted 2 years ago by to c/science_memes@mander.xyz
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[–] 11 points 2 years ago (1 child)

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

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  • [–] 23 points 2 years ago (2 children)

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

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  • [–] 12 points 2 years ago (1 child)

    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.

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