The limits of a field of equilibrium can be seen as a distorted bubble
the shape of which is governed by the laws of partial pressures.
A galaxy can be seen as a cluster of such gravitational bubbles
where all are in a state of equilibrium as is the cluster itself. All
of which
are bound by a nuetral force bonded skin or surface such as with H2O
upon which can carry small forces such as an insect e.t.c..
These surfaces create clusters of gravitational force that can only
be broken in shear because of the laws of partial pressure where they
can reform in equilibrium or unite with associated gravitational
fields
in a ever expanding form.( two forces in compression create a shear
line at 45 degrees to the force axis)
Since a cluster is finite as with a bubble bath where all neutral
surface
cling to each other then the extremes of these surface which are
bound by a common neutral bound 'skin' must be a volume where
nothing exists. When the cluster expandes into a new partial pressure
zone a new boundary or miniscus is formed to bond the innards in a
state of equilibrium. Therefore all movement cannot exist without
rotation..
Food for thought.
I provided this posting because only outside the subject of antennas
can this group continue to exist in a cordial manner.
Will this stop disagreement? I doubt it since as we all became
pseudo experts in radio transmission by the same token we can become
pseudo experts in physics. Einstein move over!
Regards
Art Unwin KB9MZ......xg..(uk)