2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/130159We suggest a way to manipulate electromagnetic wave by introducing a rotation mapping of coordinates that can be realized by a specific transformation of permittivity and permeability of a shell surrounding an enclosed domain. Inside the enclosed domain, the information from outside will appear as if it comes from a different angle. Numerical simulations were performed to illustrate these properties.5 pages, 3 figuresOpticstext