Cosmology is of course a focus of modern science, which for the non-specialist is reduced to the interpretation of the latest
images from the ever finer observation of distant galaxies. This perspective of the universe, at first glance, takes us away from
mundane experience. In this article however, it is pointed out that there is a unifying concept implicit in Newton’s gravitational
model, which acts on all space scales, but appears to have been previously neglected.
Archaeology (in its widest sense) is the daughter of the
cosmology of the universe. The physical evidence lies in abundance
around all of us. The mission of archaeology is to order this
evidence into a connected narrative. The successful achievement of
this goal follows directly from an interpretation of the work of Isaac
Newton, which appears to have been neglected. Gravity is the most
basic of all forces as the image of an apple falling on Isaac’s head
demonstrates. The perception of a normal force directed towards
a central massy object appears unassailable, however, look a little
closer, there may also be a tangential force, which happened to be of
negligible magnitude for Newton [1]. This adjunct force of gravity,
which arises from the frictional forces of the orbiting bodies, was
neglected in the classical gravitational model.
The adjunct force of gravity
In reality, the adjunct force is very significant in cosmology It
also plays an important role in the common experience. A prime
example is at the sea surface where water and air interact. Here
the individual waves are a time-dependent response to the vertical
force of gravity, however their turbulent interaction produces a
locally intense shear stress in the horizontal. In fluid mechanics,
the mean shear stress is often referred to as the wind stress. In
our context, the wind stress is a response to the adjunct force of
gravity. Depending on the time-scale of averaging and the formation
materials, fossilized adjunct forces are present throughout the
world, and may be quite properly regarded as the building blocks of
archaeology [2]. More generally, the universe is comprised of a mix
generated throughout by the interaction of the normal and adjunct
forces of gravity.
The stress-free universe
On a personal level, this is the common man’s cosmology.
An important question is which of the two forces dominates.
Fortunately, fluid mechanics provides an answer to this question.
Consider a small ocean contained in a tank. The wind stress drives a
circulation in the tank, but the strength of the circulation is limited
by the friction on the walls of the tank. Within the tank there is a
continual interaction of the two forces, which are representative
by the atmospheric and oceanographic circulations. This is a basic
model applicable on all space scales. On the scale of the universe, the
internal dynamics are limited by the velocity of light as proposed
by Einstein, and the energy source which drives the motion is the
annihilation of antimatter by matter, as also proposed by Einstein,
and the frictional forces occur at the boundaries, in the manner of
the shear stress at the sea surface [3]. In the stress-free universe,
the motive and frictional forces are balanced, and give rise to its
observed expansion.
Newton’s principle of action and reaction, applied at the
boundary of the universe, is the link with outer space beyond our
universe
This article follows the lead of Julian of Norwich, who explored
common experience 700 years ago as the constant guide to a
knowledge of the universe. This remains true today.
John A T Bye (2021) The ideas presented in this paper are based on the theoretical results in a series of papers by the author in the International Astronomy and Astrophysics Research Journal, of which, The Adjunct Force of Gravity 3(1): 1-7.