Spatial harmonics are the laws of theoretical physics that govern the specifications whereby a microcosmic example of universal structure may be attained. During a game of kal-toh played by Tuvok and Harry Kim, Seven of Nine took a turn for Harry and beat Tuvok in one move, claiming she used elementary spatial harmonics to do so. (VOY: "The Omega Directive") In 2373, Rislan attempted to convince B'Elanna Torres that a graviton fluctuation caused by the Nyrian translocator was a subspace flow field. She was not fooled after examining the spatial harmonics. (VOY: "Displaced")