Aneirin -> RE: Thoughts on Bonfire night and the enviroment. (11/4/2007 6:39:35 AM)
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ORIGINAL: petdave quote:
ORIGINAL: Aneirin So fireworks being what they are, a chemical cocktail, the different effects, displays etc, how are they produced, what is introduced into the 'formula' to make a fire work do something different. Thoughts about some might be magnesium, but I am no chemist. A wide variety of things. Copper and cobalt for blue flame, magnesium for brilliant whites, iron for sparkles, barium for green... The list goes on. Old-fashioned black powder is actually not very common in fireworks anymore... they use a composition known as flash powder, which combines a very finely ground aluminum (aluminium, to you [:D]) with an oxidizer such as potassium or ammonium perchlorate. If you look at unitednuclear.com, they offer a wide variety of chemicals used to generate different pyrotechnic effects... Modern fireworks are fairly complex chemically, and i would be quite impressed with any layman who could speak knowledgeably about the environmental results. And i would say that the bonfires on one night in a geographically small, industrialized nation are of zero environmental consequence compared to those used daily across the non-industrialized world for all purposes, not to mention the slash & burn clearing of South American rain forests for agriculture. Honestly, i'm just surprised that the Queen still lets y'all play with fireworks! It's not the queen to worry about, but the goverment in its eternal quest to disarme,control and wrap us all in cotton wool.
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