General Information & the history of Fireworks
Fireworks are a class of explosive pyrotechnic devices used for aesthetic, cultural, and religious purposes. A fireworks event (also called a fireworks show or pyrotech-nics) is a display of the effects produced by firework devices. Fireworks competitions are also regularly held at a number of places. Fireworks take many forms to produce the four primary effects: noise, light, smoke and floating materials (confetti for exam-ple.) They may be designed to burn with flames and sparks of many colors, typically red, orange, yellow, green, blue, purple, silver and gold. Displays are common throughout the world and are the focal point of many cultural and religious celebrations.
The earliest documentation of fireworks dates back to 7th century China, where they were invented. The fireworks were used to accompany many festivities. It is a part of the culture of China and had its origin there; eventually it spread to other cultures and societies. Important events and festivities such as the Spring Festival (Chinese New Year) and the Mid-Autumn Festival were and still are times when fireworks are guaran-teed sights. China is the largest manufacturer and exporter of fireworks in the world.
Fireworks are generally classified as to where they perform, either as a ground or ae-rial firework. In the latter case they may provide their own propulsion (skyrocket) or be shot into the air by a mortar (aerial shell). The most common feature of fireworks is a paper or pasteboard tube or casing filled with the combustible material, often pyro-technic stars. A number of these tubes or cases are often combined so as to make, when kindled, a great variety of sparkling shapes, often variously colored. The sky-rocket is a common form of firework, although the first skyrockets were used in war. Such rocket technology has also been used for the delivery of mail by rocket and is used as propulsion for most model rockets. The aerial shell is the backbone of today’s commercial aerial display. A smaller version for consumer use is known as the festival ball in the United States. There are also ground fireworks which, while less popular than aerial fireworks, can produce various shapes, like rotating circles, stars and 3D globes.
The First Firecrackers
The history of fireworks goes back thousands of years to China during the Han dy-nasty (~200 B.C.), even long before gunpowder was invented. It is believed that the first “firecrackers” were likely chunks of green bamboo, which someone may have thrown onto a fire when dry fuel ran short. The rods sizzled and blackened, and after a while, unexpectedly exploded. Bamboo grows so fast that pockets of air and sap get trapped inside of the plant’s segments. When heated, the air inside of the hollow reeds expands, and eventually bursts through the side with a long bam!
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