this post was submitted on 29 Aug 2025
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China turns on giant neutrino detector that took a decade to build (english.cas.cn)
submitted 3 days ago by Pro@programming.dev to c/technology@lemmy.world
31 comments fedilink hide all child comments
 

cross-posted from: https://programming.dev/post/36507288

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[–] liquefy4931@lemmy.world 23 points 3 days ago* (last edited 3 days ago) (4 children)

Here are some neat neutrino facts:

  • Neutrinos are incredibly difficult to detect.
  • There are many neutrino sources, although supernovae may be the most prevalent with 99% of energy released as neutrinos vs 1% as visible light.
  • Our sun radiates about 2% of its energy as neutrinos.
  • They travel at the speed of light and rarely interact with normal matter. So rarely, in fact, that 99.99% of neutrinos would pass through a 10km-thick slab of lead.
  • Most neutrinos pass through the entire earth without hitting a thing.
  • 10^21^ nuetrinos pass through each 1" x 1" area of your body per second and, on average, you have a 25% lifetime chance of interaction with a neutrino particle.

Who knows what will be discovered!

[–] sem@lemmy.blahaj.zone 1 points 2 days ago

Iirc there are some unsettled theoretical questions about the nature of reality and the cosmos that would possibly be answered by studying the behavior of neutrinos, but I forget what.

[–] NotMyOldRedditName@lemmy.world 2 points 3 days ago* (last edited 3 days ago)

RFK Jr announces that the environmental hazard causing autism is being hit by a neutrino while in the womb!

[–] swelter_spark@reddthat.com 2 points 3 days ago

That's exciting!

[–] richardwallass@sh.itjust.works 1 points 2 days ago

I can feel all those neutrinos on my body