• AnUnusualRelic@lemmy.world
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    4 months ago

    You’ve obviously never been in one of those flashlight enthusiasts groups. They’ll gladly tell you how you can see anything if you light it enough.

      • barsoap@lemm.ee
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        4 months ago

        Ackchyually… that’s completely wrong. Frighteningly so, I might add, where has basic education gone.

        Ultrasound are mechanical waves, light is EM radiation. Really slow light is infrared. Really fast ultrasound is… even more ultra ultrasound. Slower ultrasound would be this.