this post was submitted on 26 Jun 2026
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[โ€“] kuberoot@discuss.tchncs.de 2 points 1 day ago (1 children)

I dunno about xrays, but it is true that light slows down in media and that particles can move faster than light in that medium, that's where Cherenkov radiation comes from! (Though I'm not sure if that also just slows down the particles or what)

[โ€“] Valmond@lemmy.dbzer0.com 2 points 1 day ago

Fascinating, thanks for the info!