It's
a peaceful, beautiful scene which I become absorbed into—as my mind
wanders over the many attributes of these gorgeous denizens of my
natural world. As I sink slowly into a puddle of flesh, the hot water
working its wonders on my body and mind, I ponder the reality of what
I am seeing. My eyes behold feathers and leaves, beak and bark—merely
the surface features of the reality that's there.
But I'm
aware that there is so much more to these beautiful things than meets
my limited eye and my brain's ability to interpret. The tree's bark
is made of billions of molecules that link together to bring me the
overall image I see. The same is true of the bird's feathers. In
fact, the colors I see in its feathers are really not there at
all—I'm just noticing certain wavelengths of light that get
diffracted from tiny structures in its colorless feathers. I know
these things only because science, with its sensitive microscopes,
has peered into the depths of them, and demonstrated the existence of
molecules, atoms, and other (to my naked eye) invisible things.
I
find myself wondering how these objects would appear, if I were able,
in an Alice-in-Wonderland fashion, to shrink myself down a few
million times—until I can begin to make out the fundamental,
intricately-arranged and infinitesimal blobs of tree and bird matter
that I know are atoms. When I do imagine myself getting that tiny, from my shrunken perspective, all features of the tree that I
previously saw are now gone. The tree has “grown” so enormous
that it's now too big for me to comprehend; it's as if, when we stare
down at the ground under our feet, we try to imagine the whole planet
Earth.
Now
down near atomic size, I see no colors at all anymore—just the
colorless blobs we call atoms. I'm excited. Now I can witness what
some of the ancient Greeks presciently intuited: those things they
called atoms, the fundamental building blocks of the universe. The
Greek root of the word “atom” is a (meaning “not”)
plus temnein (meaning “to cut”). That's a pretty good
definition of fundamental: something you can no longer slice up.
Those earliest Greeks (led by Democritus) posited that, although
infinite in number, there are only a finite number of kinds of
atoms, which can then combine themselves into countless shapes and
objects. It's like having a big Lego set, with which one can build
innumerable objects. Those old Greek guys did a fantastic job of
developing an accurate image of the reality of matter.
But
we moderns know that atoms are not fundamental. They can
be split and sliced. A couple of hundred years ago some perceptive
masters of science discovered that atoms are made up of even smaller
building blocks: protons, neutrons, and electrons. And these
scientists also showed us that the core, or nucleus, of an atom
contains those protons and neutrons all balled up in a tiny central sphere,
while the electrons whirl around, out at some distance. It is sort of
like an infinitesimal solar system, with the nucleus like the sun and
the planets like electrons.
More
of Alice's Wonderland next time...
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