  We study gravitational curvature effects in circular and radial geodesics in
static, spherically symmetric space-times, using Fermi normal coordinates. We
first set up these coordinates in the general case, and then use this to study
effective magnetic fields due to gravitational curvature in the exterior and
interior Schwarzschild, Janis-Newman-Winicour, and Bertrand space-times. We
show that these fields can be large for specific parameter values in the
theories, and thus might have observational significance. We discuss the
qualitative differences of the magnetic field for vacuum space-times and for
those seeded by matter. We estimate the magnitude of these fields in realistic
galactic scenarios and discuss their possible experimental relevance.
Gravitational curvature corrections to the Hydrogen atom spectrum for these
space-times are also discussed briefly.
