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Absurdities in Modern Physics: A Solution
4-2 What Is Realism?
The concept
of realism was accepted and used in all fields of physics from the
beginning
of history until the beginning of this century. However, since the
development
of modern physics, the interpretation of quantum mechanics has rejected
realism.
Before
discussing
the concept of realism, let us examine with great care what it means.
Realism
has been defined in various ways. One of the definitions of realism is:
"The quality of the universe existing independently of ourselves."
However, the
Berkeley-Copenhagen interpretation denies the existence of realism.
According
to modern physics, matter starts to exist only at the moment the
observer
learns about its existence.
This bizarre
belief is illustrated by one of the great masters of the
Berkeley-Copenhagen
interpretation. Heisenberg [4.1]
states:
Let us recall that Cramer[4.2]makes the same claim in different words:
4-3 Confusion on the
Meaning
of Realism.
A logical
understanding of realism is central to a rational science. Definitions
of realism are not given here for the pleasure of giving a good
definition.
They are absolutely essential to achieve coherence and logic in science.
Not enough
efforts have been made to describe with sufficient intelligibility what
is meant by
realism or reality. It is quite
inadequate to say that reality is the quality of being real
or that realism is a faithful portrayal of reality [4.5].
A lot of confusion remains.
One can find
at least three different example, in which the expression reality
is used with different meanings. Let us consider what sort of reality
is
involved when we speak of:
a) the
reality
of existence of a mass;
b) the
reality
of existence of thoughts; and
c) the
reality
of existence of lengths, time, an electric charge, a mass distribution,
etc.
The same
expression
reality
of existence is used in all three cases, but each example has
different
implications. We know that a mass exists independently of our mind,
while
our thoughts evidently do not. However, both thoughts
and
massesare
usually considered to have a real existence. It certainly does not mean
the same kind of real existence. There is a clear and
fundamental
difference between these "realities".
It is
impossible
to have a clear understanding of realism (reality of existence) in
physics
when the same word reality, is applied to both thoughts
ormasses. The difference between the reality of matter
and
the reality of thoughts is not usually taken into account. Finally, it
must also be noted that reality of time and the reality of lengths are
still other kinds of reality.
Let us go
back to the three cases mentioned above. Let us give a specific name to
each kind of realism. We consider:
a) Physical
Realism, when one deals with the reality of existence of masses.
b) Mental
Realism, when one deals with the reality of existence of
thoughts, and
c) Distinctive
Realism, when one deals with the reality of existence of specific
qualities like lengths, time, electric charges etc. These are
qualities
that belong to masses and consequently are distinguishable from masses
themselves. Geometrical properties also possess some kind of reality.
Definitions
given to realism are usually vague because they fail to show these
fundamental
differences. Among some interesting definitions of realism [4.3]
is this:
Velocities, lengths and time are not matter.
Let us
consider
properties qualifying matter. We have parameters like velocities,
lengths
time, (mass) distribution etc. These are distinctive properties that do
not exist without matter.
The fact
that
a velocity is given to a mass or that an observer moves with respect to
it does not change the physical reality or the fundamental nature of
that
mass. The
velocity with respect to the observer is not a
physical reality. It is a description of the relative motion of the
observer
with respect to the physical reality (the mass). The velocity of
the observer does not exist without the observer.
Autonomous existence.
We must
conclude
that mass has the unique property of having an independent existence.
The
electric charge is only a property of masses since in physics, there
exists
no electric charge without mass. We have found that
only
masses have a completely autonomous existence
independently
of anything else. Lengths, time, charges and (mass) distributions do
not
have their autonomous existence without a mass to support them. Mass is
the support of all other physical quantities. The
existence
of lengths, time and charges is bound to the existence of mass.
Needless
to say thoughts do not have an autonomous existence.
So, one must
conclude that in physics, physical reality necessarily implies autonomous
existence. Autonomous existence is a key condition for realism.
The
difficulty
of deciding whether a physical description involves reality or not
appears
mostly when we consider a description that uses partly physical reality
and partly some non-physical reality. Most of the time it is claimed
that
a description implies physical reality simply because a part of the
phenomenon
implies physical reality. It is not noticed that only one part of the
description
involves physical reality. That difference is sometimes very subtle and
thus often remains unnoticed. This error exists at many cases in
physics
and is responsible for most of the absurdities in modern physics.
A simple
example
is the case of mass distribution. It is clear that a mass has an
autonomous
existence but the distribution of that mass does not have an autonomous
existence, since there cannot be any distribution without mass.
One can
multiply
these examples. The case of a description of sound waves in air is
quite
interesting. Sound waves propagate as a variation of air pressure in
space
and time. Waves exist independently of the relative motion of the
observer.
Independent observers can come to the same fundamental description
compatible
with reality. However, waves do not exist independently of the gas
carrying
them.
The
description
of waves is nothing but a description of the distribution of matter in
space. Without matter, there could not be waves. Waves do not have an
autonomous
existence. Since waves have no autonomous existence, they have no
absolute
physical reality.
Furthermore,
when an observer moves with respect to air, he can observe a Doppler
effect.
That change of frequency is completely due to the observer's motion, or
to the motion of the experimental apparatus. There is no physical
reality
in the Doppler effect itself, since the relative velocity has no
autonomous
existence. The frequency shifted Doppler effect is true but it has no
physical
reality.
Let us
conclude
with a practical description of physical reality. Physical reality
exists
only in the case of matter, since it is the only thing that has its own
autonomous existence, independently of any observer's mind, location or
time. Furthermore, the objective description of fundamental reality
implies
that there is no relative motion with respect to the mass observed,
since
relative motion (with respect to the observer) does not exist
independently
of the observer and can distort observations.
We must
finally
point out that the family of words related to realism and reality
includes
the word realistic. However, we must avoid using the word realisticin
this
context,
because it simply means that it is not absurd. Also, the
word
realis often confused with true.
4-4 Test of Physical
Reality.
In order to
see if there is some physical reality in the phenomenon observed, it is
useful to devise a test. We consider that physical reality exists if
the
description of one thing (a mass) given by one observer is compatible
with
another description of the same thing, given by another independent
observer.
To be completely sure of the independent existence, the observer must
not
be aware of the observations made by others. This is the way to show
that
observations are independent of the observer's mind. There must also be
more than one observer, and the experiment must be done at various
times,
so that when the observational results are compiled, the observations
lead
to independent and compatible descriptions. Finally, the description of
the object must be compatible with a complete autonomous existence.
Those
conditions are essential to test physical reality that is a necessary
condition
for realism.
Multiple
independent
observers are required because, if a thing does not have its own
existence,
independent of the observer, it is logically impossible that all
independent
observers who are not aware of each other can always give a compatible
description by chance.
Let us give
an example. Let us suppose that many people, having independently seen
the moon, give a compatible description of it. In that case, one should
not have any reasonable doubt that the moon has an independent
existence,
even if during some short instants, nobody looks at it. The description
of the moon does not become fundamentally different because it is
observed
at a different time and from a different direction. As seen above,
time,
direction and velocities do not change the nature of the moon. If one
day,
somebody discovers that the moon does not actually exist for an
instant,
then this last observation will be a new discovery that will require
the
total revision of the physical model.
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