At the beginning of the 19th century, the Italians found that when they added potassium chlorate to gunpowder, the mixture burned with enough heat to turn metals into gas, tinting the resulting flame.
सदियों बाद भी आतिशबाज़ी बनाने के तरीके में खास तबदीली नहीं आयी मगर कुछ सुधार ज़रूर हुआ है ।