TY - JOUR AU - Díaz-Cano Ocaña, Antonio AU - González Gascón, Francisco AU - Sánchez Soto, Luis Lorenzo PY - 2022 DO - 10.3390/sym14030478 SN - 2073-8994 UR - https://hdl.handle.net/20.500.14352/71401 T2 - Symmetry AB - We investigate the behavior of the solutions of the ray equation in isotropic media. We discuss local and global transversals and wavefronts and give examples of rays without wavefronts. LA - eng PB - MDPI KW - Geometrical optics KW - Ray equation KW - Eikonal equation KW - Wavefronts TI - On the ray-wavefront duality TY - journal article VL - 14 ER -