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A cake firework, also known as a multiple tube device, is a firework comprising a series of Roman candles, small aerial shells, or a combination of both, connected together by a high-speed fuse. [1] Typically, the internal fusing is set to fire each tube in series, or to fire several tubes at the same time, or a combination of these.
An example of a consumer firework in California Large fireworks retail shop in Pennsylvania. Availability and use of consumer fireworks are hotly debated topics. Critics and safety advocates point to the numerous injuries and accidental fires that are attributed to fireworks as justification for banning or at least severely restricting access to fireworks.
It provides a great balance of stability and power, and is the composition used in most commercial exploding fireworks. The balanced equation for the reaction is:- 3 KClO 4 + 8 Al → 3 KCl + 4 Al 2 O 3. The stoichiometric ratio is 34.2% aluminum and 65.8% perchlorate by mass.
Fireworks in the UK have become more strictly regulated since 1997. Since 2005, the law has been harmonised gradually, in accordance with other EU member state laws. Fireworks are mostly used in England, Scotland and Wales around Diwali (late October or early November), on Guy Fawkes Night, 5 November and on New Year's Eve.
Large fireworks displays are launched with complex timing sequences using a computer that energizes electric matches connected to the individual device fuses. A flying fish fuse (bumblebee) is an unusual type of component for fireworks. It is made like Visco fuse, but contains a metallic spark composition or other effect instead of black powder.
Roman candle firework by Great Grizzly. A Roman candle is a traditional type of firework that ejects one or more stars or exploding shells. Roman candles come in a variety of sizes, from 6 mm (0.24 in) diameter for consumers, up to 8 cm (3.1 in) diameter in professional fireworks displays.
The firing of rock cannon was a traditional part of social events and celebrations in north Wales from the late 18th century, accompanied by fireworks and bonfires. The cannon firing, as part of wider celebrations, often marked a national or local event, visits by royalty, or notable births and marriages.