Re: Newtonian physics and the speed of gravity

On Jan 29, 12:20 am, "Ken S. Tucker" wrote, sketched scrawled and
cyphered more than this:

[quotes stripped to preserve sketches]

### <<
Speed of Gravity Theory.
According to Newton the Speed of Gravity (Gs)
is infinite. Fig.1 shows the balance of the g-force
and centrifugal force and looks like,

Centrifugal Acceleration
/|\
|
|
|
<--------(E)----- Orbital Direction of Earth
| (Circular orbit)
|
|
\|/
Solar Gravitational Acceleration Fig.1
....................(S)

Where (E) is the Earth and (S) is the Sun.

According to Einstein's GR, Gs=c, hence the
acceleration vector is directed toward the apparent
(aberated) position of the sun (s) as in this Fig.2
((seeing is believing))...

Centrifugal Acceleration
/\
/
/
/
<----(E)----- Orbital Direction of Earth
/ (Circular orbit)
/
/
\/
Solar Gravitational Acceleration Fig.2
............. (s) (S)
..........image^

###

Unless EFEs are much different than his words
(they may be) something seems amiss.

<<Newton recognized that the law of
inertia is unsatisfactory
in a context so far unmentioned in
this exposition, namely that it gives no
real cause for the special physical
position of the states of motion of the in-
ertial frames relative to all other
states of motion. It makes the observable
material bodies responsible for the
gravitational behaviour of a material
point, yet indicates no material
cause for the inertial behaviour of the mate-
rial point but devises the cause
for it (absolute space or inertial ether).
This is not logically inadmissible although
it is unsatisfactory. For this reason
E. Mach demanded a modification of the
law of inertia in the sense that the
inertia should be interpreted as an
acceleration resistance of the bodies
against one another and not against
"space". This interpretation
governs the expectation that accelerated bodies
have concordant accelerating action in the same
sense on other bodies (acceleration induction).
This interpretation is even more
plausible according to general relativity
which eliminates the distinction between
inertial and gravitational effects.
It amounts to stipulating that, apart
from the arbitrariness governed by the
free choice of coordinates, the g μ v -field
shall be completely determined by
the matter.

[matter shapes four-space or orients
three-space gas molecules in induction models --Sue]

Machʼs stipulation is favoured in
general relativity by the circumstance that
acceleration induction in accordance with
the gravitational field equations really exists,
although of such slight intensity that direct detection
by mechanical experiments is out of the question. >>
http://nobelprize.org/nobel_prizes/physics/laureates/1921/einstein-lecture.html


KST further wrote:

<< IMO, the centrifugal acceleration is directly opposite
the g-acceleration, as shown in Fig.2. This is based on
the Principle of Equivalence, whereby the gravitational
acceleration and the inertial acceleration (centrifugal in
this example) precisely balance to produce a "free-fall",
so that no acceleration can be detected on Earth due
to the sun's gravity. >>

Sue... mused:
I agree on the "precise balance" but
~According~ to Mach and Einstein the centrifugal
~force~ is in all directions because there are
masses, other than the sun, in all directions.

It seems to work if you say the masses of
of the universe pull (by induction) in all
directions. A mass like the sun spoils that
isotropy, bending a straight line trajectory
into an ellipse.

Nice sketches. Can you do curves ?
:-)

Sue...
.

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