41–50 of 137 posts
It's mentioned in the article that the highest energy ever recorded for a single particle was 320,000 PeV which is about 50 joules, i.e. the energy of a golf ball at 100 mph @_@
What's faster than satellite communication? Neutrinos baby Not even sure if that's worth doing, either create/emit or use encode data into them as they fly by to be received by someone else Edit: that's cool people have tried though
Would have really been faster if this result was true https://en.wikipedia.org/wiki/2011_OPERA_faster-than-light_n... which was something that would have happened in https://en.wikipedia.org/wiki/Steins;Gate Funny the idea that the neutrino might be a tachyon never seems to go away. The best fit of OPERA results is within error bars of the speed of light but towards the superluminal side. Superluminal neutrinos of th…
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It must have been a very short amount of time. 2 HP is 1,500 watts, probably more light than all lightbulbs in my house combined.
1500 watts is about what an electric kettle uses.
For context, 120 PeV is about 10% the kinetic energy of a ping pong ball during typical play.
It looks like they detected a muon and are inferring a neutrino from the fact it went through a lot of solid. Couldn't it be any other weakly-interacting particle though?
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Now, what will happen if you get hit by a ping-pong ball mass of 120 PeV neutrinos? 120 PeV is about 2e-16 grams, so a ping-pong ball will have about 1e16 of them. From nothing, to detectable, to lethal, to big boom? My intuition would be "detectable" but I don't know enough to do the maths. And by the way, I am using the mass-energy, not proper mass, because the question is crazy enough not to even consider what wou…
The mean free path of neutrinos through lead is around one light-year. So, taking the thickness of the body to be 1/2 a meter, you would expect the probability of any individual neutrino to interact with the body to be ~5 x 10^-17. So you'd ballpark have around a 20--40% chance that a single neutrino interacts with your body. It would probably cause a localized radiation burn. Detectable, but probably not lethal unle…
The MFP of a 120 PeV neutrino in lead would be something like 10 kilometers, I think.
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This particle spread this energy through a volume of seawater a few km deep in the Mediterranean. It's going to raise the temperature of that volume a few billionths of a degree, if that. So, no, we can't.
What if our existing solar panels are optimized to detect these? Then will it improve the quality of solar panels to capture more energy from sunlight as well? Sorry, I'm no expert in this - asking more of a curiosity.
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Would have really been faster if this result was true https://en.wikipedia.org/wiki/2011_OPERA_faster-than-light_n... which was something that would have happened in https://en.wikipedia.org/wiki/Steins;Gate Funny the idea that the neutrino might be a tachyon never seems to go away. The best fit of OPERA results is within error bars of the speed of light but towards the superluminal side. Superluminal neutrinos of th…
It's worth noting that we received the neutrinos from Supernova 1987a before the photons. We think that's because the photons have a difficult time escaping the ejecta cloud, while neutrinos stream away freely, but who knows ...
https://www.sciencedirect.com/science/article/pii/S092765051...
Low energy tachyons would go a little faster, but you've got the additional problem of explaining why neutrinos got emitted in a spectral line.
It looks like they detected a muon and are inferring a neutrino from the fact it went through a lot of solid. Couldn't it be any other weakly-interacting particle though?