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Lycopodium powder is a yellow-tan dust-like powder historically used as a flash powder. [1] Today, the principal use of the powder is to create flashes or flames that are large and impressive but relatively easy to manage safely in magic acts and for cinema and theatrical special effects .
This is a compilation of published detonation velocities for various high explosive compounds. Detonation velocity is the speed with which the detonation shock wave travels through the explosive.
Contrary to urban legend, an M-80 that contains 3,000 mg of powder is not equivalent to a quarter-stick of dynamite. Dynamite generally contains a stable nitroglycerin-based high explosive, whereas M-80s or any other kind of firecracker contain a low explosive powder, like flash powder or black powder. [10]
The same flash powder used for military tactical pyrotechnics can also be used for several theatrical special effects. [11] They are used to produce loud, bright flashes of light for effect. Though some flash powders are too volatile and dangerous to be safely used, there are milder compounds that are still incorporated into performances today.
Black powder: Potassium nitrate, charcoal and sulfur; Flash powder: Fine metal powder (usually aluminium or magnesium) and a strong oxidizer (e.g. potassium chlorate or perchlorate) Ammonal: Ammonium nitrate and aluminium powder; Armstrong's mixture: Potassium chlorate and red phosphorus. This is a very sensitive mixture.
These are ground-based devices that contain small amounts of flash powder, typically less than 50 milligrams. They also encompass aerial devices that contain less than 130 milligrams of flash powder.
A flash powder composition may specify multiple different fuels. Some fuels can also serve as binders. Common fuels include: Metals. Aluminium – most common fuel in many classes of mixtures, also a combustion instability suppressant. Less energy per mass than carbon but less gas evolution, retaining heat in the reaction mixture.
Perimeter, the company behind Phos-Chek, has advised in the past cleaning the powder off as soon as it is safe to do so. "The longer the retardant dries, the more difficult it is to remove ...