2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/36299The recently introduced mechanism of flavor-oscillation clocks has been used to emphasize observability of constant gravitational potentials and thereby to question completeness of the theory of general relativity. An inequality has been derived to experimentally test the thesis presented.Based on a paper of the author published in Mod. Phys. Lett. A Vol. 13, #17 (1998) 1397-1400. Invited talk presented at the symposium to honor Professor Mendel Sachs. To appear in the proceedings. For a popular version see, Charles Seife, New Scientist 13 June 1998, p. 11General Relativity and Quantum CosmologyAstrophysicsHigh Energy Physics - PhenomenologyQuantum Physicstext