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Neutrinos are ghostly subatomic particles existing in quantum superposition. Right now 100 billion neutrinos are passing through your thumbnail every second. 8.5 minutes ago they were in the heart of the Sun.

Thanks, Phi.

Now, what do you wish to discuss concerning neutrinos, @Vette888

Edited by joigus
minor correction

Now, since it is in Physics, I can ask: 

What is physics of being ghostly?

1 hour ago, Genady said:

Now, since it is in Physics, I can ask: 

What is physics of being ghostly?

LOL. Beta decay = "when the neutron gives up the ghost" ;)

I understand 'ghostly' as 'interacting very weakly.'

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