I am doing a presentation for my history of math class over the development of non-euclidean geometry. Basically I am attempting to find examples of applications of both spherical and hyperbolic geometries. So far I have only found uses in navigation and the mapping of the celestial sphere for spherical geometry, however, I am trying to find a few more relevant applications perhaps in physics (maybe electric fields?). As for hyperbolic geometry, I only have the application used in the general theory of relativity. Perhaps this question might be suited better to a physics forum..but really I am looking for any interesting applications that I cannot think of. Any help is greatly appreciated!