[ExI] Neutrino interaction web
anders at aleph.se
Fri Mar 4 10:50:41 UTC 2011
Adrian Tymes wrote:
> Simple exclusion. Neutrinos can slip through the spaces inside ordinary
> matter, because they don't interact electromagnetically. But they can't
> actually occupy the same space as a neutron, can they?
Sorry, particle physics doesn't behave much according to common sense.
Remember that neutrinos and quarks are as far as we know point
particles, and the neutron is about 2*10^-16 m across. Most of it is
empty space. Worse, if two particles have no interactions allowed my
understanding of quantum field theory says that they will just pass
through each other. A bit like how light gets through glass since there
is no electrons with the right energy gap for it to react with.
Ben Zaiboc wrote:
> Creating a molecule with just 3 carbon atoms would be .. difficult ..
You are just pessmistic. It exists: cyclopropane.
At least chemistry makes sense. But it is after all almost on our own
Future of Humanity Institute
James Martin 21st Century School
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