What Does WEP Stand For?

WEP stands for Weak Equivalence Principle

The Weak Equivalence Principle (WEP) is a fundamental concept in physics asserting that the trajectory of a freely falling test mass is independent of its composition and structure. This principle implies that all objects, regardless of mass or internal makeup, experience the same gravitational acceleration when in a homogeneous gravitational field, thereby supporting the idea that gravitational mass and inertial mass are equivalent. The WEP serves as a cornerstone for the theories of general relativity and is essential for understanding gravitational interactions in both classical and modern physics.