2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/202229The interaction, in the long--wavelength approximation, of normal and superconducting electromagnetic circuits with gravitational waves is investigated. We show that such interaction takes place by modifying the physical parameters R, L, C of the electromagnetic devices. Exploiting this peculiarity of the gravitational field we find that a circuit with two plane and statically charged condensers set at right angles can be of interest as a detector of periodic gravitational waves.33 pages plus 1 postscript figure, TeX, macro newsym.tex includedGeneral Relativity and Quantum CosmologyAstrophysicstext