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Salute (pyrotechnics)
In pyrotechnics, a salute is an explosive device primarily designed to make a loud bang, often with a very bright flash of light. Salutes are made from flash powder. Salutes may have aluminum, antimony, titanium or other metals. Titanium flakes may be used as a special effect. A salute may be fired on the ground or launched from a mortar as a shell (aerial salute). Salutes are one of the more dangerous type of fireworks. "Mortar tubes" used to launch aerial salutes in commercial firework displays vary from 1.75 inch diameter to 8 inch diameter. All ground salutes over 50mg and air salutes over 130mg have been restricted by the United States Consumer Product Safety Commission (CPSC) and the Child Protection Act of 1966.
99% of all salutes ground and aerial are made with flash powder, but older salutes predating the early 60's carried black powder. These salutes were called "Cannon Crackers". Flash powder is significantly more destructive than black powder. Black powder has a tendency to push items rather than atomize them which is why gun powder is the standard for firearms.
==Comparison to dynamite==
Though both news reporters and black-market dealers have compared the M-80 to a 1/4 stick of dynamite the two are very different. For reference, a typical stick of dynamite contains over 10 times more explosive material than an M-80 (35 grams of nitroglycerin versus 3 grams of KCLO4/AL). Nitroglycerin detonates with a shock wave that moves faster than the speed of sound, where as flash powder or black powder used in fireworks deflagrate at a rate below the speed of sound. Detonation and deflagration is the difference between high and low explosive.
"Another assumption people make is that M-80s have some relation to dynamite; as the terms "quarter-stick" or "M-80 half-stick" are widely used to describe the power of such explosives. Anyone who thinks so has no idea what they're talking about. The compositions used in M-80s and cherry bombs are completely different than those used in dynamite, and the two can't even be compared. M-80s cannot be compared with high explosives!" Source: http://www.pyrouniverse.com/m80.htm
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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