2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/157682Electrodynamic spherical harmonic is a second rank tensor in three-dimensional space. It allows to separate the radial and angle variables in vector solutions of Maxwell's equations. Using the orthonormalization for electrodynamic spherical harmonic, a boundary problem on a sphere can be easily solved.11 pagesMathematical Physics33E99; 78A10text