Making fireworks

Tet and festivals are almost indispensable for fireworks, but few people know how to make it. In addition, it is not something you want to be able to do, for example you cannot force fireworks when the desired shape is erupted.

The first is black dynamite (gunpowder), the most necessary to make all kinds of fireworks. Explosives are a mixture of charcoal, sulfur and potassium nitrate. When exposed to a spark, those three form a very strong fuel. It is clear that the sulfur and charcoal exhaust the oxygen of potassium nitrate, a large supply. As in all burns, the temperature will increase, higher in the confined space of the cannon. The more tight, the higher the temperature.

So burning triggers the " additive " of the bomb, in other words, the substance that produces the desired color and effect. Filled with energy due to temperature, the electrons of the additive flush each bundle of light. What color light? For centuries, fireworks makers only produced yellow and white lightning bolts. Later, people knew how to make it richer with red and green (the two most easily made colors) and both blue, purple, pink and orange.

Of course, the exact formulation of additives is a top secret. That is the secret of competition. However, the most commonly used metal-based salts are Baryum, copper, sodium and strontium. Copper chloride produces a beautiful blue color, strontium chloride gives off a brilliant red color. Skillfully combining those two substances, we will have a wonderful purple color.

A kind of modern fireworks is virtually no limit. However, chemists cannot meet all requirements. Ask them to give us a very bright green color, they will frown. In order to increase the brightness, it must be heated further. However, over 1,200 degrees Celsius, copper chloride will be disintegrated and no longer green.

If you ask if you can make fireworks when you explode, it will create this shape or word, and they will answer: Wow! It's hard.