Therefore, some boundaries must be placed on the use of the equivalence principle
to account for this issue.
Many scientists think that finding a flaw in general relativity, perhaps in the equivalence principle
, may lead to a way to reconcile the two theories.
All three of these types of experiments--G measurements, Equivalence Principle
and inverse-square law tests--however, are static measurements in the sense that the test masses were not free to move beyond a small distance compared to the size of the source mass.
Together (4) and (6) amount to the derivation of gravity as a quantum effect, explaining both the equivalence principle
(g in (6) is independent of m) and the Lense-Thirring effect.
Tests of the equivalence principle
hinge on the idea that the moon's orbit would be distorted in a particular way if the Earth's gravitational binding energy, which contributes about 5 part in [10.
We can formulate an enhanced equivalence principle
a check for a violation of the strong equivalence principle
(SEP) whether the outcomes of local gravitational experiments depend on the location of the laboratory relative to a nearby gravitating body; [[alpha].
As shown in  gravity is a quantum effect where the quantum waves are refracted by the 3-space, and that analysis also gave a first derivation of the equivalence principle
The emergence of an Extra Force term in the reduction process and the possibility to recover the masses of particles, allow to reinterpret the Equivalence Principle
as a dynamical consequence which naturally "selects" geodesics from metric structure and vice-versa the metric structure from the geodesics.
This is a good counter example for those who claimed that Einstein's equivalence principle
is not important or even irrelevant.
Then, if the equivalence principle
is satisfied, the light speeds are determined by [ds.
It is shown that from this equation the equivalence principle
may be derived as a quantum effect, and that as well this generalized Schrodinger equation determines the effects of vorticity of the 3-space flow, or "frame-dragging", on matter, and which is being studied by the Gravity Probe B (GP-B) satellite gyroscope experiment.