Information AboutRoman Candle |
| CATEGORIES ABOUT ROMAN CANDLE | |
| cleanup from november 2006 | |
| fireworks | |
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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: # load a layer of Bentonite into the tube to close off the end. # load a layer of Lifting Charge . # load a Pyrotechnic Star . # cover the assembly with a dusting of Black Powder . # load a layer of Delay Powder . # repeat steps 2-5 until tube is full The device is ignited from the top. The delay powder is packed tightly in the tube, so that the flame cannot reach around the sides of the plug of delay composition. It therefore burns slowly; as it is consumed, the flame moves down through the tube. When the flame reaches the topmost pyrotechnic star, the star is ignited. Because the star fits loosely in the tube, the fire spreads all around it and ignites the lift charge. The lift charge burns quickly, propelling the star out of the tube, like a bullet from a gun. In doing so it also ignites the layer of delay powder beneath it, and the process repeats. There are several variations on this:
Roman candles are banned in some countries, including Finland , due to their potential to cause accidents. |
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