Roman candle

Roman candles are a type of fireworks, with long, thick paper tubes that contain layers of "stars" and lifting charges. A roman candle is constructed by the following method:\n# load a layer of bentonite clay into the tube to close off the end.\n# load a layer of lifting charge.\n# load a pyrotechnic star.\n# cover the assembly with a dusting of black powder.\n# load a layer of delay powder.\n# repeat until tube is full There are several variations on this:\n* Many Chinese roman candles use clay instead of delay powder and run a length of fuse down the inside of the candle to time the lifts.\n* Larger roman candles will usually add more lift to the highest layers and less to the lower layers in order to cause the stars to lift to the same altitude.\n* Some really large candles will load comet shells instead of stars. Category:Fireworks