Proceedings of the International School of Physics "Enrico Fermi.", Volume 20

angular approximation assumed atom clock co-ordinate system color conservation laws consider cosmological covariant curved defined density derivatives determined dimensionless distance earth effect energy Eötvös experiment equations of motion equivalence principle expansion experimental field eqs field equations fine structure constant force frequency function galaxies geometry given gives gravitational acceleration gravitational constant gravitational field gravitational red shift gravitational theory gravitational waves inertial integral interaction invariant isotropic JORDAN light line element linear Lorentz Mach's Principle matter Maxwell's equations measured metric tensor momentum Newtonian observations obtained orbit parameter particle Phys physical principle of equivalence R. H. DICKE radiation relativistic Rendiconti S.I.F. result Riemann tensor Riemannian satisfied scalar SCHILD solution space space-time special relativity static stress-energy tensor surface t₁ tetrad transformations universe vector velocity wavelength Whitehead's theory world line zero μν