Make that under Wisconsin. Because the Earth is round,
anyone wishing to send an object in a straight line from one spot on
the planet to another spot 500 miles away must aim through the planet
itself.
Here's where the really weird physics kick in: Neutrinos blast right
through the Earth with nary a spark. They interact so rarely and so
weakly with normal matter that they can zip right through solid rock as
though it were not even there -- much like light through a clear glass
window. That's why, contrary to the hopes of some private contractors
who heard about a big new experiment under construction, Fermilab does
not need to dig a tunnel underneath Wisconsin.
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