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Gerb (pyrotechnic)
300px, A basic pyrotechnic device A gerb is a type of firework which produces a jet of sparks, usually lasting between 15 and 60 seconds. It is a thick-walled tube filled with pyrotechnic composition and possessing a choke, which is a narrowing in the tube. Gerbs are often referred to as 'fountains'. Operation Gerbs in operation Sometimes a small charge of black powder is added to the bottom of a gerb to make it finish with a bang: this charge is known as the 'bounce'. These are commonly used at sporting events. Gerbs intended for use indoors near a proximate audience, such as at a rock concert, typically have shorter durations (from to 30 seconds) and heights (4 to 50 feet). Gerbs are usually measured in terms of time and height. For example, a 4×4 burns for 4 seconds at a height of 4 feet. History Eric Newby's book '' The Last Grain Race'' (chapter two: "Mountstewart") contains a 1938 reference to what appears to be the original gerb — in effect a mortar bomb ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Gerb Schematic
GERB, an acronym for Citizens for European Development of Bulgaria (), is a conservative center-right populist political party which was the ruling party of Bulgaria during the periods between 2009–2013, 2014-2021, 2025-present and was supporting the Denkov government between 2023-2024. History GERB is headed by former Prime Minister of Bulgaria Boyko Borisov, the former mayor of Sofia, former member of the National Movement Simeon II and former personal guard of Todor Zhivkov in the 1990s. The establishment of the party followed the creation of a non-profit organization with the acronym (in Bulgarian) GERB — ''Citizens for European Development of Bulgaria'', earlier the same year. In early January 2007, and early February 2007, the party came second in public polls on party support with around 14%, trailing the Bulgarian Socialist Party which had around 25%. Its stated priorities are fighting crime and corruption, preserving family as the cornerstone of society an ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Firework
Fireworks are Explosive, low explosive Pyrotechnics, pyrotechnic devices used for aesthetic and entertainment purposes. They are most commonly used in fireworks displays (also called a fireworks show or pyrotechnics), combining a large number of devices in an outdoor setting. Such displays are the focal point of many cultural and religious Celebration (party), celebrations, though mismanagement could lead to List of fireworks accidents and incidents, fireworks accidents. Fireworks take many forms to produce four primary effects: noise, light, smoke, and floating materials (confetti most notably). They may be designed to burn with colored flames and sparks including red, orange, yellow, green, blue, purple and silver. They are generally classified by where they perform, either 'ground' or 'aerial'. Aerial fireworks may have their own Air propulsion, propulsion (skyrocket) or be shot into the air by a Mortar (weapon), mortar (aerial shell). Most fireworks consist of a paper or ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ember
An ember, also called a hot coal, is a hot lump of smouldering solid fuel, typically glowing, composed of greatly heated wood, coal, or other carbon-based material. Embers (hot coals) can exist within, remain after, or sometimes precede, a fire. Embers are, in some cases, as hot as the fire which created them. They radiate a substantial amount of heat long after the fire has been extinguished, and if not taken care of properly can rekindle a fire that is thought to be completely extinguished and can pose a fire hazard. In order to avoid the danger of accidentally spreading a fire, many campers pour water on the embers or cover them in dirt. Alternatively, embers can be used to relight a fire after it has gone out without the need to rebuild the fire – in a conventional fireplace, a fire can easily be relit up to 12 hours after it goes out, provided that there is enough space for air to circulate between the embers and the introduced fuel. They are often used for cookin ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pyrotechnic
Pyrotechnics is the science and craft of creating fireworks, but also includes safety matches, oxygen candles, explosive bolts (and other fasteners), parts of automotive airbags, as well as gas-pressure blasting in mining, quarrying, and demolition. This trade relies upon self-contained and self-sustained exothermic chemical reactions to make heat, light, gas, smoke and/or sound. The name comes from the Greek words ''pyr'' (πυρ; 'fire') and ''technikós'' (τεχνικός; 'artistic'). Improper use of pyrotechnics could lead to pyrotechnic accidents. People responsible for the safe storage, handling, and functioning of pyrotechnic devices are known as pyrotechnicians. Proximate pyrotechnics Explosions, flashes, smoke, flames, fireworks and other pyrotechnic-driven effects used in the entertainment industry are referred to as proximate pyrotechnics. Proximate refers to the pyrotechnic device's location relative to an audience. In the majority of jurisdictions, special tr ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Black Powder
Gunpowder, also commonly known as black powder to distinguish it from modern smokeless powder, is the earliest known chemical explosive. It consists of a mixture of sulfur, charcoal (which is mostly carbon), and potassium nitrate, potassium nitrate (saltpeter). The sulfur and charcoal act as fuels while the saltpeter is an oxidizer. Gunpowder has been widely used as a propellant in firearms, artillery, rocketry, and pyrotechnics, including use as a blasting agent for explosives in quarrying, mining, building Pipeline transport, pipelines, tunnels, and road#Construction, roads. Gunpowder is classified as a Explosive#Low, low explosive because of its relatively slow decomposition rate, low ignition temperature and consequently low brisance, brisance (breaking/shattering). Low explosives deflagration, deflagrate (i.e., burn at subsonic speeds), whereas high explosives detonation, detonate, producing a supersonic shockwave. Ignition of gunpowder packed behind a projectile generates ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
The Last Grain Race
''The Last Grain Race'' is a 1956 book by Eric Newby, a travel writer, about his time spent on the four-masted steel barque ''Moshulu'' during the vessel's last voyage in the Australian grain trade. Background to the book In 1938 the 18-year-old Newby shipped aboard the four-masted barque ''Moshulu'' as an apprentice. His outbound passage from Europe to Australia was via the Cape of Good Hope. His return was around Cape Horn. The ''Moshulu'' was at the time one of the largest sailing ships still transporting grain. While 1939 was arguably the last Grain race worthy of the name, as it was followed by World War II and the consequent near-total interruption of commercial shipping, commercial sailing ships still sailed the route after the war for two more years in 1948 and 1949.pamir.chez-alice: ''The grain rac ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
The Station Nightclub Fire
A fire occurred on the evening of February 20, 2003, at The Station, a nightclub and music venue in West Warwick, Rhode Island, United States, killing 100 people and injuring 230. During a concert by the rock band Jack Russell's Great White, an offshoot of the original Great White band, a pyrotechnic display ignited flammable acoustic foam in the walls and ceilings surrounding the stage. Within six minutes, the entire building was engulfed in flames. The fire remains the deadliest firework accident in U.S. history and the fourth-deadliest nightclub fire in U.S. history. It was also the second-deadliest nightclub fire in New England, behind the 1942 Cocoanut Grove fire. After the fire, multiple civil and criminal cases were filed. Daniel Biechele, the tour manager for Great White who had ignited the pyrotechnics, pled guilty to 100 counts of involuntary manslaughter in 2006 and was sentenced to fifteen years in prison with four to serve. Biechele was released from prison in ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
