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Neels van der Westhuizen, et al. This article is about the phenomenon of general relativity. Simulation showing gravitational waves produced during the final moments before the collision of two black holes. Generally, the more mass that is contained within a given volume of space, the greater the curvature of spacetime will be at the boundary of its volume. As objects with mass move around in spacetime, the curvature changes to reflect the changed locations of those objects. These propagating phenomena are known as gravitational waves. Distances between objects increase and decrease rhythmically as the wave passes, at a frequency corresponding to that of the wave.

Scientists have demonstrated the existence of these waves with ever more sensitive detectors. Gravitational waves can penetrate regions of space that electromagnetic waves cannot. They are able to allow the observation of the merger of black holes and possibly other exotic objects in the distant Universe. In particular, gravitational waves could be of interest to cosmologists as they offer a possible way of observing the very early Universe. Universe was opaque to electromagnetic radiation.

Precise measurements of gravitational waves will also allow scientists to test more thoroughly the general theory of relativity. In principle, gravitational waves could exist at any frequency. However, very low frequency waves would be impossible to detect and there is no credible source for detectable waves of very high frequency. 1915, he was skeptical of PoincarĂ©’s idea since the theory implied there were no “gravitational dipoles”.