- #1
MuIotaTau
- 82
- 3
A common definition of an inertial frame is that it is a reference frame in which space and time are homogeneous and isotropic; see, for instance, Landau and Lifshitz's Classical Mechanics. L&L also use homogeneity and isotropy to justify the functional form of the Lagrangian. But intuitively, it seems like the introduction of a potential renders a field inhomogeneous. Is this true?