What are pyrotechnic compositions?

Some articles on pyrotechnic composition, pyrotechnic, pyrotechnic compositions:

Pyrotechnic Composition
... A pyrotechnic composition is a substance or mixture of substances designed to produce an effect by heat, light, sound, gas or smoke or a combination of these, as a result of non-detonative self-sustaining ... Pyrotechnic substances do not rely on oxygen from external sources to sustain the reaction ... Basic types of pyrotechnic compositions are flash powder – burns very fast, produces explosions and/or bright flashes of light gunpowder – burns slower ...