"No matter how hard you try you will never be able to grasp
just how tiny, how spatially unassuming, is a proton. It is
just way too small.
"A proton is an infinitesimal part of an atom, which itself
of course is an insubstantial thing. Protons are so small that
a little dib of ink, like the dot on this i can hold something in
the region of 500,000,000,000 of them, rather more than the
number of seconds contained in half a million years. So
protons are exceedingly microscopic, to say the very least."
-opening two paragraphs from Bill Bryon's
A Short History of Nearly Everything
image courtesy of APOD. Description here
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