Sandokhan has been continually spamming of the "Radar ranging in the Solar System" thread with completely irrelevant material.
So I'll try to answer his posts here.
"Four trillion billion liters of water stay in place next to the outer surface of a sphere" by exactly the same thing that stops YOU flying off into space and that is gravitation.
Please describe the attractive mechanism by which a molecule of water is attracted by the Earth's iron/nickel core.
Who says it does? But I'm still waiting for your explanation the attractive mechanism that stops YOU flying off into space.
When velocities become appreciable compared to c or when close to huge masses Einstein's General Relativity gives the best current solution.
You still seem not to understand what is going on.
No, that's you!
General relativity HAS NO MECHANISM WHATSOEVER TO DESCRIBE GRAVITY.
Incorrect.
General Relativity postulates that gravity is a curvature of spacetime created by mass, but it does not explain how that curvature occurs. Actually, it is just a DESCRIPTION that leaves unanswered the key question of exactly how matter affects space and time.
No matter how deep you go there are always are deeper levels. In your hypotheses please explain exactly why there is a far higher density of aether around Venus than the Moon. Careful how answer because there might be a trap.
Dr. Erik Verlinde:
General Relativity remains just a description of the force we call gravity. It leaves unanswered the key question of exactly how matter affects space and time.
That's totally wrong! General Relativity describe's precisely in which way mass and energy affect
spacetime but maybe it does not answer why - ask a physicist.
General Relativity HAS TO rely totally on Newton's ATTRACTIVE MODEL.
No GR does not rely on Newtonian Gravitation.
Part the background of GR was Einstein noting that there were two definitions of mass for the same object.
One is the
inertial mass as in
force = massinertial x acceleration and the other is the
gravitational mass as in
force = (G x Mgrav x massgrav) / d2..
Yet in every case
massinertial = massgravmassgrav.
Having two definitions for the one mass seemed incorrect to Einstein and so to cut things short he saw that the force that we call gravitation is really an
inertial force and not an
attractive force as Newtonian Gravitation appears to be.
Here's some entertainment for you:
General relativity explained in under three minutesThis is what you wrote earlier:
The huge mass of the Earth bends spacetime
Explain to your readers HOW mass bends spacetime. You haven't done so at all.
You refuse to answer the simplest question so why should I bother with that? Go ask a physicist!
No one else can explain how mass/matter interacts with spacetime, not even Einstein.
Have you asked everybody, including Einstein?
Feynman resolved the energy-momentum tensor problem by the field approach: the gravity force between Newton's apple and the Earth is caused by the exchange of gravitons. Gravitons (real and virtual) are mediators of the gravitational interaction.
I seriously doubt that Feynman went further than suggesting that gravitons
might be the gravitational analog of photons in electromagnetism and could tie gravitation into quantum mechanics.
But to date General Relativity and Quantum mechanics are not compatible for a number of reasons.
Then, you have a huge problem: how do gravitons produce curvature?
Nobody says that they do.
Again, general relativity DOES NOT offer any kind of a mechanism.
That is why physicists have to rely on Newton's attractive gravitational model.
No they do not "rely on Newton's attractive gravitational model".
They use
Newton's Laws of motion an universal gravitation where it is sufficiently accurate simply because it is so much simpler to work with.
But Cosmologists and particle physicist certainly use relativity in many situations.
The bottom line is that however much you wriggle and squirm General Relativity is by far the best explanation of gravitation and mechanics that we have to date.
But that does not mean that it will not be modified, updated or changed in some way.
Do you have a better theory that let's you do real calculations for things like, say, the propagation time for light or other EM radiation to and from the Moon, Venus and Mars at any specified date?