Fireworks were developed on the basis of gunpowder. At first, it was a pastime for the nobility, the rich and the rich to compete for supremacy and luxury. In the Ming and Qing dynasties, fireworks production technology had a new development, and gradually became a holiday gift. During the Spring Festival, Lantern Festival and other major events, fireworks are set off to add excitement.
The names and color of fireworks in our country are many and complicated. However, Jerusalem composite is the most popular type of flower. After the fireworks shoot into the sky, the first colorful light agent burning, and then is a parachute with open and fall, fireworks overlap, the night sky brocade, constitute a variety of beautiful patterns, become the fifteenth day of the Lantern Festival people watch the target. These big, fleeting fireworks are expensive. General county, township put fireworks, both grand, but also controlled, in order to achieve the purpose of viewing, the festival atmosphere to the climax as the goal. "Fire tree silver flower never sleeps" is the true portrayal of this landscape.
When it comes to setting off fireworks, we should also mention the tower fire in Shanxi. This tower fire, which has the function of heating, lighting and ornamental value, will also show off its skills on the night of the fifteenth day of the first lunar month.
Tower fire, is made of brick, loess and mud. Generally more than a few meters high, some places can reach one meter five, six, they are not equal. It is about fifty centimeters in diameter. In round jube there are holes around it. Tower fire consists of large pieces of charcoal, built into a tower, and then lit from below with wood, allowing the charcoal to burn itself. A tower fire like this can burn all night. Tower fire lit, with the Lantern Festival on the fifteenth day of the lantern show, make red, set off fireworks synchronously. It is usually lit at night on the 14th, 15th and 16th of the first lunar month. This tower fire, reflects the spiritual sustenance of the people, looking forward to a good harvest next year, financial prosperity, family prosperity, a good luck.
Why do fireworks have a riot of colors
Fireworks contain a variety of different chemicals that stain the flames when they burn.
When copper burns, the flame turns green;
Strontium nitrate, strontium carbonate when burning, can make the flame turn red;
Sodium nitrate, sodium oxalate combustion flame is yellow;
The mixture of strontium nitrate and sodium nitrate in a certain proportion, burning flame is orange red.
If these medicines are placed in different proportions and in different orders in the fireworks, when the fireworks burn, they can emit a riot of colors.
The main component of firecrackers and fireworks is nitrocellulose, which has been added with stabilizer. Three times more efficient than traditional black powder. Be efficient. Smoke-free.
The main component of firecrackers is black powder, containing sulfur, charcoal powder, potassium nitrate, and some also contain potassium chlorate. Magnesium powder, iron powder, aluminum powder, antimony powder and inorganic salt are also added to make flash thunder, electric light cannon, fireworks cannon and colored fireworks. When the fireworks ignited, charcoal powder, sulfur powder, metal powder and so on under the action of oxidant, rapid combustion, carbon dioxide, carbon monoxide, sulfur dioxide, nitric oxide, nitrogen dioxide and other gases and metal oxide dust, at the same time produce a lot of light and heat and cause the explosion of firecrackers. Confete, smoke and harmful gases accompanied by sound and fire, flying everywhere, so that the discharge site of smoke, sulfur oxides, nitrogen oxides, carbon oxides and other serious pollution of the air. These gases are irritating to people's respiratory tract and eyes.