2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/80772The propagation of a chemical wave in a narrow, cone-shaped glass capillary was investigated. When a chemical wave propagates from the wider end to the narrower end, it slows, stops, and then disappears. A phenomenological model that considers the surface effect of the glass is proposed, and this model reproduces the experimental trends.8 pages, 5 figuresPattern Formation and SolitonsAdaptation and Self-Organizing Systemstext