A sparkler is a type of hand-held firework that burns slowly while emitting coloured flames, sparks, and many effects. In the United Kingdom, a sparkler is often used by children at bonfire and fireworks displays on Guy Fawkes Night, the fifth of November each year. Design The "classic" type of sparkler consists of a thin metal rod approximately 20 cm (8 inches) long that has been dipped in a thick batter of pyrotechnic composition and allowed to dry. This composition is rich in a metallic fu… (More on Sparklers)