Interference in gravitational waves in space, conceptual illustration. Black holes may create gravitational waves. The effect is most pronounced where extremely massive objects, like neutron stars and black holes, are subject of extremely high acceleration. In 2016, gravitational waves were detected for the first time, 100 years after Einstein's prediction. In physics, interference is a phenomenon in which two waves superpose to form a resultant wave of greater, lower or the same amplitude. Constructive and destructive interference result from the interaction of waves that are correlated or coherent with each other.