Flash powder is a pyrotechnic composition, a mixture of oxidizer and metallic fuel, which burns quickly and if confined produces a loud report. It is widely used in theatrical pyrotechnics and fireworks (namely salutes, e.g., cherry bombs, M-80s, firecrackers, and cap gun shots) and was once used for flashes in photography. Different varieties of ...
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http://en.wikipedia.org/wiki/Flash_powder
(from the article `flash lamp`) The first flash lamp used in photography was invented in Germany in 1887; it consisted of a trough filled with Blitzlichtpulver (`flashlight ...
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http://www.britannica.com/eb/a-z/f/34
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