is the most dynamic of all expressions of gravity. If, while gazing at a waterfall, we envision ourselves moving upward we can appreciate that the water waits at the velocity achieved at the point of release for the faster moving ground to catch up to it.
The plumb bob …
Is a simple tool comprised of a string and a pointed weight. When suspended in an accelerating field it will pull taught and always point in the direction away from acceleration.
The Universal Properties of Acceleration state that this phenomenon occurs universally. No matter where you are in the universe this property exists. Because it points toward the center of the planet no matter where you are standing it is simply stating that the ground is accelerating upwards.
Gravity is not an attractive force as it was thought to be but rather is exactly inertia. Any two objects in space appear to be attracted because they both are expanding. As they expand the distance between them narrows until they touch. After they touch they push on each other with momentum.Inertia extends out into space because space still has particle matter in accelerated motion.
Read how this pushing creates the dual accelerating frame we call gravity in Universal Properties of Acceleration.
The Principle of Exactness:
Gravity is exactly inertia– they are one and the same. The surfaces of planets are expanding radially into space because of an expanding accelerating universal frame at the particle level. This phenomenon cannot be directly seen or measured because of observer invariance (all members of the universal frame are integral members of that frame and therefore motion in this direction becomes invisible and directly un-measurable).
What can be seen is that any two particles of matter in space appear to be coming together therefore an inference had been made by Isaac Newton that particles are attracted to one another when actually it is the space between them that becomes smaller and smaller until they collide.
Newton’s law of universal gravitation begins with an inference:
Every particle of matter in the universe attracts every other particle…
That inference, as it turns out, was incorrect.
Einstein could not accept a variant universe even though it was expressly allowed in special relativity– according to Jules Henri Poincare in 1897, in his paper on The Relativity of Space. (See the video, A Brief Conversation With Albert Einstein starring Carl Reiner as Albert Einstein.)
Because the speed of light appeared constant (it is an acceleration in a variant universe) and because he could not envision planets getting larger at an accelerated rate Einstein gave up on exactness and devised Equivalence.
Science has travelled down the road of invariance since, even after it was discovered that the universe is indeed expanding and accelerating.