Chapter Five
Holistic Symmetry
in
Modern Science
When you have learned how to look
for symmetry, and how to describe the symmetry which you find, you will
constantly be discovering it in the most unexpected places, and observing more
and more the role it plays throughout nature and art. (Holden and Singer in
Young 1965:232)
When
people first think of symmetry, they usually think of perfect mirror imagery or
what is sometimes called bilateral symmetry. There is also up and down symmetry based on a horizontal
axis. When vertical and horizontal
symmetry occur in the same composition, the result is what we call
quadrilateral symmetry. The important point with regard to quadrilateral
symmetry is that it has two axes, which together provide the composition with a
center. Arnheim (1982) has written
eloquently and extensively on the power of the center:
Cosmically we find that matter organizes around centers,
which are often marked by a dominant mass. Such systems come about wherever their neighbors allow
them sufficient freedom. In the vastness of astronomical space the rotating
galaxies and the smaller solar or planetary systems are free to create such
concentric patterns, and in the microscopic realm so are the atoms with their
electrons circling around a nucleus.
Even in the crowded world of our direct experience, inorganic and
organic matter occasionally has enough freedom to follow its inclination to
form symmetrical structures -- flowers, snowflakes, floating and flying
creatures, mammalian bodies -- shaped around a central point, a central axis,
or at least a central plane. The
human mind also invents centric shapes, and our bodies perform centric dances
unless this basic tendency is modified by particular impulses and
attractions. The earth with what
it carries is such a concentric spatial system. (1982: vii).
Arnheim
could have added the nucleus of the living cell as a concentric system. The symmetrical pattern of the double
helix of DNA is another such concentric system. We would also contend that the human body, the central
nervous system, and the psyche all have their centers. As Arnheim shows, the center is
certainly a fundamental aspect of aesthetic form, in both that which naturally
occurs in the universe and in that which is created by the imaginative powers
of human artists. The power of the center, which is found in atoms, DNA
molecules, and cells, is also found in the gravitational system of the earth,
in the solar system, in the Milky Way galaxy, and in various other portions of the entire universe.
Symmetry
Modern
physicists have found that symmetry is a fundamental dimension of the
universe. This was emphasized in a
presentation by Dennis W. Sciama titled ÒThe Universe as a WholeÓ at the
symposium on the development of ÒThe Physicist's Conception of NatureÓ held in
Italy in 1972 (Mehra 1973). In
that presentation, which is chapter two in a book by the same title, Sciama
lists four primary properties of the universe: (1) its existence; (2) its
evolution; (3) its symmetry; and (4) its singularities.
At
the macroscopic level, matter appears in three states: solid, liquid, and
gas. Bipolar symmetry plays a key
role in this triad. The solid
manifestation of matter is primarily crystalline, and all crystals are
symmetrical. The stability of the
solid is due to its symmetrical structure. In crystalline states, atoms oscillate about positions of
equilibrium, and these positions are symmetrical in their spatial relations.
The orderliness of solids is a
rather astonishing fact of nature.
Physicists have become used to the fact, and they often forget that they
do not really know why atoms adopt orderly arrangements. Nevertheless, more than any other
property, this orderliness distinguishes solids from liquids: atoms are packed closely
together in both, but they have a constantly shifting, disorderly arrangement
in a liquid and an orderly arrangement about which they vibrate in a
solid. Orderliness of this
regularly repeated sort is called crystallinity; anything having crystallinity is a
crystal or a
collection of crystals. That
includes almost all solids. (Holden and Singer in Young 1965:222).
There is some fluctuating, local,
temporary order in the liquids -- groups of a hundred atoms become ordered for
a short time perhaps -- but order is to be found only here at one instant,
there at the next. And when you
vaporize the liquid, even those relics of orderliness disappear. (Holden and
Singer in Young 1965:224).
The
transformation of colored gases or clouds into living forms that occurr in
Navajo creation stories exmplifies the primordial transformation of disorder
into order. This is also
reflective of what Roy Rappoport calls the informing of substance and the
substantiation of form (1974: 42-46).
In many creation stories, the earth is in a muddy condition because it
is lacks form. The imposition of
form onto apparent formlessness is the basic feature of creative
transformation, and creative transformation is the essence of art and
culture. Symmetry is the ultimate
form of orderliness and the perfect representation of balance and harmony. However, bipolar symmetry creates
dynamic flow (liquid) from order (solid) to disorder (gas) and back again.
The type
of order found in the atoms of solids is both symmetrical and repetitive. Atoms in crystals do not organize
themselves in just any possible order;
their order must be an arrangement that can be repeated infinitely. Figure 22 comes from an excellent book
on crystals by Alan Holden and Phylis Singer, Crystals and Crystal Growing. Pattern (B) of this figure clearly illustrates the symmetrical,
repetitive order of atoms in a crystal.
Pattern (A) is also orderly but not a possible atomic order for atoms in
a crystal. The similiarity of the
atomic pattern in (B) with Navajo the emblems of Navajo dieties, weaving
motifs, and the hooghan design is striking and provocative.
Another
important and fascinating aspect of crystals is how they grow and expand:
In the growing of a crystal of alum
in solution, aluminum sulfate and potassium sulfate diffuse through the water;
and when they reach the surface of the crystal, they join with each other and
with some of the water. They adopt
positions on the surface that are forced on them by the kind of orderliness
confronting them. Settling into
those positions, they extend the orderliness outward, and thus the crystal
grows. (Holden and Singer in Young
1965: 229).
When different types of crystals conjoin, they form
polycrystalline masses. Most of
our metals today, forged from the firing process first used by Cro-Magnon
artists, are polycrystalline masses.
Probably
no more striking and no more beautiful examples of infinite patterns of natural
symmetry exist in the universe than those found in snow crystals (Figure
23). Notice the hexagonal and
triangular format of these snow crystals.
The power of the center is also fundamental to these symmetrical
formats.
In Quantum
Mechanics by Ashok
Das and Adrian C. Melissinos, an entire chapter of 44 pages is devoted solely
to the symmetries found in quantum mechanics. This chapter is introduced in the following manner:
The question of symmetry has
intrigued man from the earliest times.
On the one hand, symmetry is inherently manifest in every facet of
nature from crystalline rocks to plant life and living organisms, even if not
always exact. On the other hand,
man has exploited and introduced symmetry in many of his activities: it is
apparent in art, in music, in buildings and machines - to mention but a few
examples. One might expect as we
examine simpler structures the symmetry properties would be more prevalent, and
indeed this is the case. At the
other end of the scale the evolution of complex systems with large numbers of
constituents, while still obeying the basic principles of symmetry, is
primarily governed by statistical laws.
The use of symmetries in quantum mechanics is more pronounced than in
classical physics where most simple systems can be solved exactly. In quantum mechanics systems are
described by state vectors belonging to Hilbert space. In that space the symmetry operations
are represented by operators with well-defined properties, and it can be easily
shown that for every symmetry operation there exists a corresponding physical
observable that is a constant of the motion. Therefore, identifying the symmetries of a system provides
helpful information about the state vectors and hence about the system. In the past few decades experimental
and theoretical advances have led to the identification of many (unsuspected)
new symmetries in nature. (Melissinos 1986: 260).
The
concept of global supersymmetry, which implies a relation between particles of
different spins, is a necessary ingredient of unification theory, bringing
theories of gravitation and particle physics closer together. Supersymmetry was first developed in
quantum field theory by Golfand and Likhtman, extended by Volkov and Akulov,
and then re-discovered and enlivened by Wess and Zumino.
Bipolar
symmetry, sometimes referred to as aysmmetry, has played an important role in
physics and in other sciences. The
existence of one thing has given rise to the hypothesis that something
complementary, juxtaposed, or counterbalanced also exists:
Physicists have rarely gone wrong in
banking on the underlying symmetry of nature. For example, when you learn that a changing magnetic field
produces an electric field it is a good bet to guess -- and it turns out to be
true -- that a changing electric field will produce a magnetic field. For another example: The electron has a
so-called antiparticle, that is, a particle of the same mass but of opposite
charge. Is it not reasonable to
expect that the proton should also have an antiparticle? A 5-GeV proton accelerator was built at
the University of California at Berkeley to search for the antiproton. It was found. (Holliday and Resnick
1986: 1132).
The French
physicist, Louis de Broglie, discovered the wave nature of matter by
postulating an underlying bipolar symmetry of matter with radiation. Radiation exhibited particle-like
behavior even though it was thought originally to be solely a wave. If radiation had a bipolar nature, De
Broglie posited that matter might also have a bipolar nature. This led him to the discovery that
indeed matter can also be wave or particle. Today, the bipolar symmetry of wave and particle is a basic
aspect of physics.
Pasteur's
first significant scientific acheivement was his discovery of the asymmetry
(bipolar symmetry) of tartrate and paratartrate acid. The paratartrate acid was found to be a mixture of two kinds
of crystals, some oriented to the right and some oriented to the left in a
bipolar symmetrical fashion (Dubos 1960: 240-245). Pasteur felt he had discovered a basic principle of life and
the structure of the universe:
Life, as manifested to us, is a
function of the asymmetry of the universe and of the consequences of this fact.
. . Terrestrial magnetism, the opposition which exists between the north and
south poles in a magnet and between positive and negative electricity, are but
reultants of asymmetrical actions and movements. . . Life is dominated by asymmetrical actions. I can even imagine that all living
species are primordially, in their structure, in their external forms,
functions of cosmic asymmetry. (Pastuer quoted in Dubos 1960 reprinted in Young
1965: 246).
Although Pasteur's enthusiastic extension of his discovery
of the bipolar symmetry of paratartrate acid to the whole universe may have at
the time seemed unwarranted, further research and findings have again and again
shown that juxtaposed, bipolar symmetry is ubiquitous. However, the apprehension of bipolar
symmetry as a basic part of the structure of the universe did not begin with
Pasteur; it existed among the Navajo long before 1850, and it goes back several
thousand years in Chinese philosophy, where the dynamics of the universe are
understood in terms of the bipolar symmetry of yin and yang. These notions are found in many other ancient and modern
cultures throughout the world.
Despite
his discovery not being really new, it led Pasteur into many fruitful areas of
research:
It was from his conviction that asymmetric
molecules are always the product of life that he was led to the study of
fermentation, to the recognition that microorganisms play an essential role in
the economy of nature, and eventually to his epoch-making discoveries in the
field of infectious diseases. (Dubos in Young 1965: 248).
The
discovery of the non-conservatioon of parity in certain particle interactions
by Tsung Dao Lee and Chen Ning Yang has led to the general acceptence of the
notion that bipolar symmetry is inherent in the structure of the universe. Not only have the anti-electron and the
anti-proton been discovered, anti-neutrons have also been discovered. The existence of anti-particles was
found to be a function of the reversed direction of their spin. The existence of these anti-particles
-- a kind of anti-matter -- has provoked much thought and inquiry:
The discovery of the anti-particles
did not disturb physicists; on the contrary, it was a pleasing confirmation of
the symmetry of the universe. What
did disturb them was a quick succession of discoveries showing that the proton,
the electron, and the neutron were not the only elementary particles they had to worry about. (Asimov in
Young 1965: 254).
Most of
the newly discovered particles are unstable and exist for much less than a
millionth of a second. The stable
and relatively long-lived particles can be divided into three types. One is the photon, which is a unit of
electromagnetic radiation; the
other two types are the leptons and the hadrons. The leptons are only involved in very weak interactions and
cannot hold anything together.
These weak interactions are sometimes referred to as weak nuclear force
and become manifest only in certain kinds of particle collisions and particle
decays. By far the most
significant and the most powerful of all interactions occur among the hadrons,
and the structure of the hadrons
and their interactions are important for us here.
The
hadrons subdivide into two types, mesons and baryons, each with their distinct
but similar structures. Protons
and neutrons are baryon type hadrons.
The hadrons consist of particles and antiparticles of opposite
charge. The structure of the
hadrons reflects a definite symmetry, but this symmetry can only be understood
in terms of interactions, not in terms of part to whole subdivision. The symmetry of the hadrons reflects
both the power of their structure and the conservation of their energy. Physicists discuss the interactions of
the hadrons both in terms of their symmetry and their corresponding patterns of
conservation:
Hadrons, for example, carry definite
values of isospin
and hypercharge,
two quantum numbers which are conserved in all strong interactions. If the eight mesons . . . are arranged
according to the values of these two quantum numbers, they are seen to fall
into a neat hexagonal pattern known as the meson octet. This arrangement exhibits a great deal of symmetry; for
example, particles and antiparticles occupy opposite places in the hexagon, the
two particles in the centre being their own antiparticles (see Figure 24). The eight lightest baryons form exactly
the same pattern which is called the baryon octet (see Figure 25). This time, however, the antiparticles
are not contained in the octet, but form an identical anti-octet. The remaining baryon in our particle table, the omega,
belongs to a different pattern, called the baryon decuplet, together with nine resonances (see
Figure 26). All the particles in a
given symmetry pattern have identical quantum numbers, except for isospin and
hypercharge which give them their places in the pattern.
The quantum numbers, then, are used
to arrange particles into families forming neat symmetric patterns, to specify
the places of the individual particles within each pattern, and at the same
time to classify the various particle interactions according to the
conservation laws they exhibit.
The two related concepts of symmetry and conservation are thus seen to
be extremely useful for expressing the regularities in the particle world.
(Capra 1975:252-254)
The
structure of hadrons, both mesons and baryons, is similar to many of the
fundamental patterns found in Navajo semiotical geometry, which is reflected in
the emblems of the Holy People, in the motifs of Navajo weaving, in the
structure of Navajo hooghans, and in the holistic symmetry of Navajo art. All these structures are organized in
terms of symmetrical triangles and the power of the center. The bipolarity of positive and negative
charge of particles and antiparticles is also reflected in the bipolar symmetry
of Navajo art in the frequent alternations of positive and negative space.
Holism
Concepts
of symmetry and holism pervade modern physics. The new conception of the universe does not have the
universe constructed out of dissectable, independent particles. Instead the universe is conceived as a
vast interwoven system of interrelated and interacting phenomena. Nothing is independent or fully
autonomous; everything is
interconnected and thus part of a holistic essence:
We have reversed the usual classical
notion that the independent
Ôelementary partsÕ of the world are the fundamental reality, and that
the various systems are merely particular contingent forms and arrangements of
these parts. Rather, we say that
inseparable quantum interconnectedness of the whole universe is the fundamental
reality, and that relatively independently behaving parts are merely particular
and contingent forms within this whole. (Bohm and Hiley 1975: 102).
The
new science is struggling with unification theory and grand cosmic
schemes. The great scientific
leaps of this century were integrative and holistic. Einstein discovered the interrelationships of time/space and
mass/energy, and he also struggled in his later years to discover the
interrelationship among gravitational, electromagnetic, and nuclear forces.
A
recent theory called Ògrand unificationÓ has been able to integrate weak and
strong nuclear forces with electromagnetic force. Pati notes that ÒWithin the premises of these ideas there is
no intrinsic asymmetry between quarks and leptons. They are regarded as members
of one family (multiplet)Ó (in Ne'eman 1981: 221). Grand unification theory is still lacking adequate
experimental verification, but it illustrates the intuition of many physicists,
taking a lead from Einstein, that unity and symmetry underlie apparent
discontinuity and diversity.
Hermann
Weyl developed a theory to unite electromagnetic fields with gravitational
fields. P. A. M. Dirac called
Weyl's theory Òa beautiful
synthesis" but it was not acceptable to most physicists because it was
contradicted by quantum phenomena.
Dirac proposed a different way to view Weyl's theory, using two metrics ds and ds, and thereby eliminating many of
the objections to Weyl's theory.
Dirac concluded, therefore, that "there is then no objection to
Weyl's theory. We can accept it,
and get in that way a very beautiful synthesis of the electromagnetic field and
the gravitational fieldÓ (in Mehra 1973: 53).
Einstein
made gigantic leaps when he showed the link between space/time and
mass/energy. The third pair in
this set was discovered in the quantum, and in the underlying bipolarity of
wave and particle:
Quantum theory has shown that
particles are not isolated grains of matter, but are probability patterns,
interconnections in an inseparable cosmic web. Relativity theory, so to speak, has made these patterns come
alive by revealing their intrinsically dynamic character. It has shown that the activity of
matter is the very essence of its being.
The particles of the subatomic world are not only active in the sense of
moving around very fast; they themselves are processes! The existence of matter and its
activity cannot be separated. They
are but different aspects of the same space-time reality. (Capra 1975: 203).
These formulations put an end to the
Great Machine metaphor of classical science as a formulation of the structure
and operation of the universe and have given birth to a new kind of
science. The new science is built
on models of interwoven systems and holistic fields. An emphasis on holism and interwoven essence is, as we
discovered in chapter four, also found in some of the major trends in modern
American art. This is particularly
true of abstract expressionism, chromatic abstraction, color field, and
one-image art. The rise of
abstract art has an important connection with and similarity to quantum field
theory and the development of systems theory in the social and natural
sciences.
From
physics we learn Òthat in any given ÔfieldÕ the forces of which it consists will distribute
themselves in such a way that the simplest, most regular, most symmetrical
organization resultsÓ (Arnheim 1968:48).
ÒField forcesÓ are the underlying dynamics that serve as the vital
component of pictorial composition.
The effect that these forces have on our visual apprehension is
determined by the placement of visual elements (color, value, shape, mass,
texture, and line) within a field.
In
comparison to all the other visual elements of pictorial composition, color is
the most contextual. Our
perception of color is influenced significantly by its interaction with neighboring
colors and with background elements.
Shape and value contrasts are more insistent in our visual perception
than is color, but perceptions of value contrasts and shape tend to be
individual rather than contextual.
This is primarily because of the physiology of perception and to the
composition of the retina.
In
the retina are two types of photoreceptors of visual impulses: rods and
cones. These photoreceptors
chemically convert the visual impulses into electrical impulses that are
transported to the brain via the optic nerve. These electrical impulses are synthesized in the brain to
form a mental conception of that which was perceived. There are three types of cones through which we perceive
color, although recent studies indicate the possibility of four types of cones
(Fischler and Firschein 1987: 236).
One type of cone is most responsive to blue (short wavelengths), a
second type to green (middle range
wavelengths), and a third type to red (long wavelengths). A cone for the reception of red is
considered to be the first color receptor developed in the hominid line. Our blue and green receptors came
later.
Value
(gradations of black/grey/white) is registered through the rods in the
retina. There are 120 million rods
per eye and only 6.7 million cones per eye, amounting to 18 times as many rods
in the retina as there are cones.
This is why the perception of value contrasts tends to dominate color
interaction in a pictorial composition (Wertenbaker 1981: 35-36). The significant difference in the
number of rods and cones is probably because of cultural and evolutionary
factors. Rods that receive value
contrasts are what we primarily use in ascertaining shapes. We use the rods to see at night when
there is not enough light to perceive color. Chickens, for example, have no rods and, therefore, cannot
see at night.
From
the rods and cones, visual signals are sent along the optic nerve to the
brain. These visual signals first
split into two groups, one containing color contrast information and one
containing value contrast information.
Next, these signals separate into three processing systems, each with a
distinct function. ÒOne system
appears to process information about shape perception; a second, information
about color; a third, information about movement, location and spatial
organizationÓ (Livingstone 1988: 78).
The shape system produces high-resolution and static perception of form or image, resulting in sharp
definitions of individual shapes and objects. The color system has three to four times lower acuity than
the shape system. The movement
system operates entirely without the influence of color, but all three systems
combine in the brain to create an integrated visual perception.
Visual
perception results from an integrated and interacting triad, built first on the
bipolar distinction between color and value. Spatial organization then mediates and modifies this bipolar
system, creating a triad of hue, shape, and movement. Value adds depth to flatness, while color adds planarity to
form. By interacting with both
flatness and form, movement makes visual perception dynamic. The perception of color is relational,
systemic, and contextual, whereas the perception of image (shape or object) is
particular, specific, and individual.
The perception of movement is directional, variable, and dynamic
Probably the move from the forest to
the savannah and the resulting tendency toward diurnalism may have led to the
development of cones for the perception of color. Generally, human cultural and social experience has
emphasized the recognition of object, shape, and entity over the apprehension
of system, interrelatedness, and context.
It is easier for us to deal with particular entities (shapes) than it is
for us to visualize and conceptualize
abstract essences and interrelationships found in holistic and
interacting contexts. This
tendency, based in our visual apprehension of our environment, has had its
impact on the formulation of scientific theories and findings. Our visual and conceptual tendencies
have been to see objects, to recognize part-to-whole relationships, and to
think in terms of linear cause and effect models. This is why theories based on relativity and quantum phenomena
have been so difficult for us to understand and for us to assimilate into our
worldview. Nevertheless, we are
overcoming these tendencies and are rapidly going in the direction of systemic,
cybernetic, symbiotic, ecological, and contextual models.
The
rise of abstract art and the development of various systems theories have an
important parallel. Abstract art
goes beyond the recognition of entity or image and focuses attention on
interaction and interrelatedness, striving to uncover and reveal holistic
essences. Systems theories have
tried to get us beyond linear cause and effect notions and tried to get us to
think of phenomena in terms of interaction and interrelationship. It is interesting and significant that
abstract art and quantum theory arose at about the same time. Both of these developments preceded the
application of various forms of systems theory to the social and biological
sciences. Scientific insight and
conceptualization have paralleled artistic imagination and aesthetic formulation.
Abstract
art, like quantum theory and relativity, has been difficult for those trained
in Western intellectual and artistic traditions to understand. The field painters of the last four
decades have emphasized abstract and holistic relationships and essences. A special group of these, the color
field painters of the 1960s, emphasized the use of color because of its
contextual nature and its expressive potential to convey relationships and
holistic ideas. They explored
color as abstact subject matter for their art, rather than focusing on entities
and images. Color lends itself
well to interaction and to contextual, holistic compositions.
Color,
more than any other visual element, had the potential for extending the general
premise of systemic art -- the singularity of the field and the object through
holistic configuration. Color
field painting most likely took its inspiration from the fundamental nature of
the field as discovered in physics in the early part of this century:
In these Òquantum field theories,Ó
the classical contrast between the solid particles and the space surrounding
them is completely overcome. The
quantum field is seen as the fundamental physical entity; a continuous medium
which is present everywhere in space.
Particles are merely local condensations of the field; concentrations of
energy which come and go, thereby losing their individual character and
dissolving into the underlying field. (Capra 1975: 210).
From Einstein we get this conclusion: ÒThere is no place in this new kind of
physics both for the field and matter, for the field is the only realityÓ
(in Capek 1961: 319).