Fireworks are also called fireworks, fireworks, fireworks and firecrackers. According to "China Fireworks and Firecrackers Standard-Safety and Quality", fireworks and firecrackers are defined as entertainment products that use pyrotechnics as raw materials and produce acousto-optic colors. Working people in China invented it earlier, and it is often used for grand ceremonies or performances.
Fireworks are actually similar in structure to firecrackers, and they all contain black powder and medicine. In order to achieve good performance, fireworks and fireworks bombs are filled with a lot of gunpowder for launching and explosion. For example, a fireworks bomb with a diameter of 20 cm will explode only when it rises to a height of about 200 meters after launch, and the radius covered by these points can be about 80 meters.
Fireworks culture:
China:
"For China people, the Spring Festival is a particularly important festival. The Chinese New Year in firecrackers is a romance in China that has lasted for thousands of years. " Chen, a professor at Zhejiang Normal University and an expert in folklore, said that fireworks and firecrackers are not only a symbol of the flavor of the year, but also the spiritual sustenance in traditional stories to drive away the animals of the year and ward off diseases and evil spirits.
At the end of the year and the beginning of the year, people condensed many feelings such as family reunion and expectation for the new year in this group of firecrackers and fireworks, which is the romantic feelings and cultural ritual that have lasted for thousands of years in the blood of Chinese culture. ?
Japan:
1733, Japan's first public fireworks show was held in Edo (now Tokyo), which was called "Fireworks between the two countries" in history. In Japan, fireworks display is usually called "fireworks display".
/kloc-in the 6th century, pyrotechnic technology and gunpowder weapons were introduced to Japan. At that time, fireworks were considered to have the ability to exorcise demons. It was not until the middle of the Edo period in the18th century that fireworks display became popular. People think that the Fireworks Festival can pay tribute to those who died of disease and famine.