Proceedings PaperUnusual Optical Forms
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Geometrical optics can be applied to many other areas of physics. In this paper, a few examples are chosen to illustrate how the ray tracing methods of gradient-index optics can be used for describing the propagation of ocean waves in the deep ocean, the propagation of seismic waves, the paths of sound waves, and the mirage problem. In addition, a short description of the current state of gradient-index optics and the difference between axial and radial gradients is given.