this post was submitted on 29 Jun 2024
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[–] AnUnusualRelic@lemmy.world 19 points 5 months ago (1 children)

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.

[–] SpaceNoodle@lemmy.world 7 points 5 months ago (1 children)

Ultrasound is just really slow light

[–] barsoap@lemm.ee 13 points 5 months ago (1 children)

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.

[–] SpaceNoodle@lemmy.world -4 points 5 months ago (1 children)