2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/230504We present a plane and parabolic collector that absorbs radiant energy and transforms it in heat. Therefore we have a panel to heat water. We study how to increment this capture of solar beams onto the panel in order to increase its efficiency in heating water.3 pages and 3 figuresGeneral Physicstext