Equation and test of possible delay time of Newton force
Recently, a simple heuristic modification of the Newton potential with a non- zero delay-time τG has been proposed. Our modification is largely suppressed for purely gravitational interactions, it becomes relevant under non-gravitational accelerations of the sources. We illustrate how the choice τG ∼ 1 ms may already influence the 5 th digit of G determined by Cavendish experiments. Re-evaluation of old Cavendish experiments and implementing slightly modified new ones may confirm the proposal or, at least, put a stronger upper limit on τG.