^Physics explained in English, without any Latin or Greek
  nonsense, from atoms to quantum physics, electrons, particles,
  waves - by Poul Anderson, one of my favorite hard science
  fiction authors I read as a kid (I learned so much about science
  from his short stories):

  For most of its being, mankind did not know what things are made
  of, but could only guess. With the growth of worldken, we began
  to learn, and today we have a beholding of stuff and work that
  watching bears out, both in the workstead and in daily life.

  The underlying kinds of stuff are the *firststuffs*, which link
  together in sundry ways to give rise to the rest. Formerly we
  knew of ninety-two firststuffs, from waterstuff, the lightest
  and
  barest, to ymirstuff, the heaviest. Now we have made more, such
  as aegirstuff and helstuff.

  The firststuffs have their being as motes called *unclefts*.
  These are mightly small; one seedweight of waterstuff holds a
  tale of them like unto two followed by twenty-two naughts. Most
  unclefts link together to make what are called *bulkbits*. Thus,
  the waterstuff bulkbit bestands of two waterstuff unclefts, the
  sourstuff bulkbit of two sourstuff unclefts, and so on. (Some
  kinds, such as sunstuff, keep alone; others, such as iron, cling
  together in ices when in the fast standing; and there are yet
  more yokeways.) When unlike clefts link in a bulkbit, they make
  *bindings*. Thus, water is a binding of two waterstuff unclefts
  with one sourstuff uncleft, while a bulkbit of one of the
  forestuffs making up flesh may have a thousand thousand or more
  unclefts of these two firststuffs together with coalstuff and
  chokestuff.

  At first is was thought that the uncleft was a hard thing that
  could be split no further; hence the name. Now we know it is
  made
  up of lesser motes. There is a heavy *kernel* with a forward
  bernstonish lading, and around it one or more light motes with
  backward ladings. The least uncleft is that of ordinary
  waterstuff. Its kernel is a lone forwardladen mote called a
  *firstbit*. Outside it is a backwardladen mote called a
  *bernstonebit*. The firstbit has a heaviness about 1840-fold
  that
  of the bernstonebit. Early worldken folk thought bernstonebits
  swing around the kernel like the earth around the sun, but now
  we
  understand they are more like waves or clouds.

  In all other unclefts are found other motes as well, about as
  heavy as the firstbit but with no lading, known as
  *neitherbits*.
  We know a kind of waterstuff with one neitherbit in the kernel
  along with the firstbit; another kind has two neitherbits. Both
  kinds are seldom.

  The next greatest firststuff is sunstuff, which has two
  firstbits
  and two bernstonebits. The everyday sort also has two
  neitherbits
  in the kernel. If there are more or less, the uncleft will soon
  break asunder. More about this later.

  The third firststuff is stonestuff, with three firstbits, three
  bernstonebits, and its own share of neitherbits. And so it goes,
  on through such everyday stuffs as coalstuff (six firstbits) or
  iron (26) to ones more lately found. Ymirstuff (92) was the last
  until men began to make some higher still.

  It is the bernstonebits that link, and so their tale fastsets
  how
  a firststuff behaves and what kinds of bulkbits it can help
  make.
  The worldken of this behaving, in all its manifold ways, is
  called *minglingken*. Minglingers have found that as the
  uncleftish tale of the firststuffs (that is, the tale of
  firststuffs in their kernels) waxes, after a while they begin to
  show ownships not unlike those of others that went before them.
  So, for a showdeal, stonestuff (3), glasswortstuff (11),
  potashstuff (19), redstuff (37), and bluegraystuff (55) can each
  link with only one uncleft of waterstuff, while coalstuff (6),
  flintstuff (14), germanstuff (22), tin (50), and lead (82) can
  each link with four. This is readily seen when all are set forth
  in what is called the *roundaround board of the firststuffs*.

  When an uncleft or a bulkbit wins one or more bernstonebits
  above
  its own, it takes on a backward lading. When it loses one or
  more, it takes on a forward lading. Such a mote is called a
  *farer*, for that the drag between unlike ladings flits it. When
  bernstonebits flit by themselves, it may be as a bolt of
  lightning, a spark off some faststanding chunk, or the everyday
  flow of bernstoneness through wires.

  Coming back to the uncleft itself, the heavier it is, the more
  neitherbits as well as firstbits in its kernel. Indeed, soon the
  tale of neitherbits is the greater. Unclefts with the same tale
  of firstbits but unlike tales of neitherbits are called
  *samesteads*. Thus, everyday sourstuff has eight neitherbits
  with
  its eight firstbits, but there are also kinds with five, six,
  seven, nine, ten, and eleven neitherbits. A samestead is known
  by
  the tale of both kernel motes, so that we have sourstuff-13,
  sourstuff-14, and so on, with sourstuff-16 being by far the most
  found. Having the same number of bernstonebits, the samesteads
  of
  a firststuff behave almost alike minglingly. They do show some
  unlikenesses, outstandingly among the heavier ones, and these
  can
  be worked to sunder samesteads from each other.

  Most samesteads of every firststuff are unabiding. Their kernels
  break up, each at its own speed. This speed is written as the
  *half-life*, which is how long it takes half of any deal of the
  samestead thus to shift itself. The doing is known as
  *lightrotting*. It may happen fast or slowly, and in any of
  sundry ways, offhanging on the makeup of the kernel. A kernel
  may
  spit out two firstbits with two neitherbits, that is, a sunstuff
  kernel, thus leaping two steads back in the roundaround board
  and
  four weights back in heaviness. It may give off a bernstonebit
  from a neitherbit, which thereby becomes a firstbit and thrusts
  the uncleft one stead up in the board while keeping the same
  weight. It may give off a *forwardbit*, which is a mote with the
  same weight as a bernstonebit but a forward lading, and thereby
  spring one stead down in the board while keeping the same
  weight.
  Often, too, a mote is given off with neither lading nor
  heaviness, called the *weeneitherbit*. In much lightrotting, a
  mote of light with most short wavelength comes out as well.

  For although light oftenest behaves as a wave, it can be looked
  on as a mote, the *lightbit*. We have already said by the way
  that a mote of stuff can behave not only as a chunk, but as a
  wave. Down among the unclefts, things do not happen in steady
  flowings, but in leaps between bestandings that are forbidden.
  The knowledge-hunt of this is called *lump beholding*.

  Nor are stuff and work unakin. Rather, they are groundwise the
  same, and one can be shifted into the other. The kinship between
  them is that work is like unto weight manifolded by the fourside
  of the haste of light.

  By shooting motes into kernels, worldken folk have shifted
  samesteads of one firststuff into samesteads of another. Thus
  did
  they make ymirstuff into aegirstuff and helstuff, and they have
  afterward gone beyond these. The heavier firststuffs are all
  highly lightrottish and therefore are not found in the
  greenworld.

  Some of the higher samesteads are *splitly*. That is, when a
  neitherbit strikes the kernel of one, as for a showdeal
  ymirstuff-235, it bursts into lesser kernels and free
  neitherbits; the latter can then split more ymirstuff-235. When
  this happens, weight shifts into work. It is not much of the
  whole, but nevertheless it is awesome.

  With enough strength, lightweight unclefts can be made to
  togethermelt. In the sun, through a row of strikings and
  lightrottings, four unclefts of waterstuff in this wise become
  one of sunstuff. Again some weight is lost as work, and again
  this is greatly big when set beside the work gotten from a
  minglingish doing such as fire.

  Today we wield both kind of uncleftish doings in weapons, and
  kernelish splitting gives us heat and bernstoneness. We hope to
  do likewise with togethermelting, which would yield an unhemmed
  wellspring of work for mankindish goodgain.

  Soothly we live in mighty years!^