Wait, wait!
If we turn them upside-down,
then we have a perfect model of an atom:
two electrons on the first, lowest shell
four on the second shell*
eigth on the highest *
Tournus, France, 13.12.2004
* the second atomic shell has one s orbital with 2 electrons
and
three p orbital with 2 electrons each: together 8 electrons on the
second shell -
so the small roof in the middle is a wrong level!
But the 9 birds on the two parapets are exactly like
in fluorine atom.
