TY - JOUR AU - Wesson, Paul S. PY - 2014 TI - LOOKING FOR THE FIFTH DIMENSION JF - Physics International VL - 5 IS - 1 DO - 10.3844/pisp.2014.5.7 UR - https://thescipub.com/abstract/pisp.2014.5.7 AB - An exact solution shows that a new kind of wave can propagate through the Einstein vacuum if there is an extra dimension, thereby providing a way to test the dimensionality of the universe.