This paper is the first to make the distinction between the strong and weak equivalence principles.

However, only the particular weakest and weak equivalence principles are true.

This shows that the weak equivalence principle is already built into the very structure of Riemann space-time.

Einstein generalized the weak equivalence principle, and this led to General Relativity.

With the first successful production of antimatter, in particular anti-hydrogen, a new approach to test the weak equivalence principle has been proposed.

This statement is known as the weak equivalence principle (WEP).

The Weak Equivalence Principle says that all objects fall the same way in a gravity field, no matter what they are made of.

The measurements made collected data that supported the theory of the "Weak Equivalence Principle".

Nordström's second theory satisfies the weak equivalence principle.

Its localization is the weak equivalence principle that states the existence of a desired local inertial frame at a given world point.

Isaac Newton uses a fixed length pendulum with weights of varying composition to test the weak equivalence principle to 1 part in 1000.

It was also theorized that it would be inconsistent with the results of the Eötvös test of the weak equivalence principle.

The weak equivalence principle, also known as the universality of free fall or the Galilean equivalence principle can be stated in many ways.

Roland von Eötvös discovered the weak equivalence principle (one of the cornerstones in Einsteinian relativity).

If and are the same distance from then, by the weak equivalence principle, they fall at the same rate (i.e. their accelerations are the same)

What is now called the "Einstein equivalence principle" states that the weak equivalence principle holds, and that:

Tests of the weak equivalence principle are those that verify the equivalence of gravitational mass and inertial mass.

Schiff's conjecture suggests that the weak equivalence principle actually implies the Einstein equivalence principle, but it has not been proven.

This theory is Lorentz invariant, satisfies the conservation laws, correctly reduces to the Newtonian limit and satisfies the weak equivalence principle.

The equivalence of inertial and gravitational masses is sometimes referred to as the "Galilean equivalence principle" or the "weak equivalence principle".

However, already in the context of Newton gravity, the Weak Equivalence Principle is postulated: the gravitational and the inertial mass of every object are the same.

The weak equivalence principle: The trajectory of a point mass in a gravitational field depends only on its initial position and velocity, and is independent of its composition.

Because "local Lorentz invariance" (LLI) also holds in freely falling frames, experiments concerning the weak Equivalence principle belong to this class of tests as well.

Many physicists believe that any Lorentz invariant theory that satisfies the weak equivalence principle also satisfies the Einstein equivalence principle.