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Throughout these Seminars,
Microscopic World -1- and -2-,
we have learned
the basic thinking way
of quantum mechanics,
and
also studied
how the contradictions
between the particle nature
and the wave nature
of substance particles
and light
was resolved and
unified within the theory.
Moreover, we have learned that
the particle-wave duality
is the very thing
that can make it possible
to explain all of the
structure of atoms;
not only the stability of atoms
but also the atomic spectra
characteristic to individual atoms
were explained
with the wave nature
of electrons in the atoms.
This was never explained
in the classical theory.
The construction
of quantum mechanics
was a great scientific
and philosophical revolution
by which human being's
understanding of matter,
that had long been
established since
the Greek period,
was completely changed.
It is truly surprising
to think that
this revolution
was accomplished
only within about 30 years
at the beginning
of the 20th century
under the tight cooperation
of the geniuses in the world.
Since the construction
of quantum mechanics,
"the World of Quantum Mechanics"
has been expanded
wider and wider.
It was combined
with another scientific
revolution in the 20th century,
i.e.
the theory of special relativity
by Einstein,
to bring out
the relativistic
quantum mechanics.
It has also been expanded
from the atomic
and molecular world
to the worlds of
atomic nuclei and
elementary particles,
and many new
discoveries have been
made.
This World of
Quantum Mechanics is
still expanding
and deepening.
Readers are
to become interested
in those subjects
and to actively study them.
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