The paper summarizes the most important effects in Einsteinian
gravitomagnetic fields related to propagating light rays, moving clocks and
atoms, orbiting objects, and precessing spins. Emphasis is put onto the
gravitational interaction of spinning objects. The gravitomagnetic field lines
of a rotating or spinning object are given in analytic form.Comment: 7 pages, 3 figures, Proc. Hyper Symposium, Paris 200