this post was submitted on 04 Mar 2026
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What is it?
Cherenkov radiation
You know sonic booms? This is basically like 'optical booms' from radiation in water that's traveling faster than the speed-of-light-in-water (which is less than the speed of light in a vacuum)
I think it is a nuclear reactor
What do all of those different doohickeys do?
This particular image is from a university research reactor. I'd assume most of those doohickeys are various measurement probes, measuring things like temperature and the levels of different types of radiation.