
n. (used with a sing. verb)
- The art of manufacturing or setting off fireworks. Also called pyrotechny.
- A fireworks display.
- A brilliant display, as of rhetoric or wit, or of virtuosity in the performing arts.
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Pyrotechnics |
Mixtures of substances that produce noise, light, heat, smoke, or motion when ignited. They are used in matches, incendiaries, and other igniters; in fireworks and flares; in fuses and other initiators for primary explosives; in delay trains; for powering mechanical devices; and for dispersing materials such as insecticides.
Black powder, an intimate mixture of potassium nitrate, charcoal, and sulfur, was perhaps the earliest pyrotechnic and remains the most important one. It was discovered prior to A.D. 1000in China during the Sung dynasty, where it was used in rockets and fireworks. Its introduction to Europe prior to 1242 eventually revolutionized warfare. Its use in blasting rock was also revolutionary, enabling rapid fragmentation of ore and other rock with a great reduction in manual labor.
A pyrotechnic mixture contains a fuel and an oxidizer, usually another ingredient to give a special effect, and often a binder. The oxidizer is usually a nitrate, perchlorate, chlorate, or peroxide of potassium, barium, or strontium. Fuels may be sulfur, charcoal, boron, magnesium,aluminum, titanium, or antimony sulfide. Examples of binders that are also fuels are dextrin and natural polysaccharides such as red gum. Salts of strontium, calcium, barium, copper, and sodium and powdered magnesium metal when combined with a fuel and oxidizer can give the special effects of scarlet, brick red, green, blue-green, yellow, and white flames, respectively.
Many pyrotechnic mixtures are easily ignited by impact, friction, flame, sparks, or static electricity. Even those that burn quietly in small quantities can explode violently when ignited under confinement or in larger quantities.
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The pyrotechnics display was dazzling.
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Pyrotechnics is the science of using materials capable of undergoing self-contained and self-sustained exothermic chemical reactions for the production of heat, light, gas, smoke and/or sound. Pyrotechnics include not only the manufacture of fireworks but items such as safety matches, oxygen candles, explosive bolts and fasteners, and components of the automotive airbag.
Individuals responsible for the safe storage, handling, and functioning of pyrotechnic devices are referred to as pyrotechnicians.
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Explosions, flashes, smoke, flames, fireworks or other propellant driven effects used in the entertainment industry are referred to as pyrotechnic special effects, theatrical effects, or proximate pyrotechnics. Proximate refers to the pyrotechnic device's location relative to an audience. In the majority of jurisdictions, special training and licensing must be obtained from local authorities to legally prepare and use proximate pyrotechnics.
Many musical groups use pyrotechnics to enhance their live shows. Some of the earliest bands to use pyrotechnics were The Who, Pink Floyd, KISS and Queen, even Michael Jackson attempted using pyrotechnics in a 1984 Pepsi advertisement,[1] failing miserably and setting his hair on fire. German industrial metal band Rammstein are renowned for their large variety of pyrotechnics, which range from flaming costumes to face-mounted flamethrowers. Nightwish, Lordi and Green Day are also known for their vivid pyrotechnics in concert. Many professional wrestlers have also used pyrotechnics as part of their entrances to the ring.
Modern pyrotechnics are, in general, divided into categories based upon the type of effect produced or manufacturing method. The most common categories are:
A basic theatrical effect, designed to create a jet or fountain of sparks, is referred to as a gerb. A gerb consists of a sufficiently strong and non-flammable container to hold the pyrotechnic compound. Typical pyrotechnic formulations consist either of flammable materials such as nitrocellulose and/or black powder or a mixture of a fuel and oxidizer blended in situ. A plug placed at one end of the container with a small orifice, called a choke, constricts the expulsion of the ignited pyrotechnic compound, increasing the size and aggressiveness of the jet.
Various ingredients may be added to pyrotechnic devices to provide colour, smoke, noise or sparks. Special additives and construction methods are used to modify the character of the effect produced, either to enhance or subdue the effect; for example, sandwiching layers of pyrotechnic compounds containing potassium perchlorate, sodium salicylate or sodium benzoate with layers that do not creates a fountain of sparks with an undulating whistle.
In general, such pyrotechnic devices are initiated by a remotely controlled electrical signal that causes an electric match, or e-match, to produce ignition. The remote control may be manual, via a switch console, or computer controlled according to a pre-programmed sequence and/or a sequence that tracks the live performance via stage cues.
Display pyrotechnics, also known as commercial fireworks, are pyrotechnic devices intended for use outdoors, where the audience can be further away, and smoke and fallout is less of a concern. Generally the effects, though often similar to proximate pyrotechnics, are of a larger size and more vigorous in nature. It will typically take an entire day to set up a professional fireworks display. The size of these fireworks can range from 50 mm (2") to over 600 mm (24") diameter depending on the type of effect and available distance from the audience. In most jurisdictions, special fireworks training and licensing must be obtained from local authorities to legally prepare and use display pyrotechnics.
Consumer pyrotechnics are devices readily available for purchase to the general public with little or no special licensing or training. These items are considered relatively low hazard devices but, like all pyrotechnics, can still be hazardous and should be stored, handled and used appropriately. Some of the most common examples of consumer pyrotechnics encountered include recreational fireworks (including whistling and sparking types), model rocket motors, highway and marine distress flares, sparklers and caps for toy guns. Pyrotechnics are also indirectly involved in other consumer products such as powder actuated nail guns, ammunition for firearms, and modern fireplaces. Some types, including bird scarers, shell crackers, whistle crackers and flares, may be designed to be fired from a 12-gauge pistol or rifle.
Pyrotechnics are dangerous and must be handled and used properly. Recently, several high profile incidents involving pyrotechnics have re-enforced the need to respect these explosives at all times[citation needed]. Proximate pyrotechnics is an area of expertise that requires additional training beyond that of other professional pyrotechnics areas and the use of devices specifically manufactured for indoor, close proximity use.
A common low-budget pyrotechnic flash pot is built using modified screw-in electric fuses in a common light fixture. Homemade devices commonly fail to include the appropriate safety features and can provide numerous hazards, including:
Proper commercial flash pots include safety features such as warning pilot lamps, preignition grounding, and safing circuits. They also use isolated and low-voltage power sources, and have keyed power connections to help prevent accidental ignition.
Pyrotechnics are dangerous substances that must always be treated with the utmost respect and with the proper training. Due to the hazardous nature of these materials, precautions must always be taken to ensure the safety of all individuals in the vicinity of pyrotechnics. Despite all precautions, accidents and errors occur from time to time, which may result in property damage, injury and in severe cases loss of life. These incidents may be the result of poorly manufactured product, unexpected or unforeseen events, or in many cases, the result of operator error.
Some of the more widely publicized incidents involving pyrotechnics in recent history include:
In 2003, improper use of pyrotechnics caused a fire in a Rhode Island nightclub called The Station. The Station nightclub fire was started when the fireworks the band Great White were using accidentally ignited inflammable soundproofing foam. The pyrotechnics in question were not appropriate. The foam caused combustion to spread rapidly and the resulting fire led to 100 deaths, apparently because their quick escape was blocked by ineffective exit doors. While the type of foam used and the lack of a sprinkler system were important factors in the fire,[2] the Great White fire could likely have been prevented had those involved paid attention to standard safety practices around the use of pyrotechnics.[3]
A similar pyrotechnic-induced fire in 2004 destroyed the Republica Cromagnon nightclub in Buenos Aires, Argentina, killing 194 people.
In May 2000, a small fire led to two massive explosions at the SE Fireworks Depot in Enschede, Holland, leaving 23 people dead, 947 people injured, and an estimated 2,000 homes damaged or destroyed.
In March 2008, a pyrotechnic rocket fell off its cable and landed in the crowd at WWE Wrestlemania 24 leading to a big investigation.
In February 2010, a pyrotechnic flame engulfed WWE wrestler Mark Calaway; he was seen with multiple burns throughout the show.
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Translations:
Pyrotechnics |
Dansk (Danish)
n. pl. - fyrværkeri
n. - fremstilling af fyrværkeri
Français (French)
n. pl. - pyrotechnie, (fig) feux d'artifice (hum)
n. - pyrotechnie
Deutsch (German)
n. pl. - Feuerwerk, Brillanz
n. - Pyrotechnik
Ελληνική (Greek)
n. pl. - πυροτεχνία, πυροτεχνουργία, πυροτεχνήματα, (μτφ.) ρητορικά εφέ
Italiano (Italian)
pirotecnica
Português (Portuguese)
n. pl. - pirotecnia (f)
Español (Spanish)
n. pl. - pirotecnia, fuegos artificiales
n. - pirotecnia
Svenska (Swedish)
n. pl. - fyrverkerikonst, pyroteknik, lysammunition (mil.)
中文(简体)(Chinese (Simplified))
烟火制造术, 烟火使用
中文(繁體)(Chinese (Traditional))
n. pl. - 煙火製造術, 煙火使用
n. - 煙火製造術, 煙火使用
한국어 (Korean)
n. pl. - 꽃불제조법, 꽃불 올리기
n. - 발광화
日本語 (Japanese)
n. - 花火技術, はなばなしさ, 花火製造術, 花火
العربيه (Arabic)
(الجمع) الألعاب الناريه, المتفجرات الناريه
עברית (Hebrew)
n. - ייצור זיקוקים, מפגן מבריק, שילוח זיקוקין-די-נור
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