Nothing in this world can beat the joy of watching the lit sky with the dazzling magic of colours, lights and loud bangs. People no matter what age love to watch fireworks displays during the big outdoor celebrations. There is much more you might want to know about fireworks. Here you will read about how they work, what their types are, and much more.
What are fireworks and why are they used?
A firework is a device designed to explode in a controlled way. It explodes with bangs, bursts of colour and lights. The word “fireworks” came from the Greek word pyrotechnics, which means “fire art”. Well, no doubt it sure is an art that people love to watch. These are most commonly used for entertainment purposes because of the show of effects produced by these devices. No occasion or event is complete without an aesthetic firework display. Bonfire is famous for its fireworks Manchester. Fireworks displays are common throughout the world and are the point of focus for many celebrations such as Diwali, Chinese New Year, New year eve etc.
How Fireworks are made?
The first few things that come into mind when you think about fireworks are lights, colours, smoke and noise, which are the most fun parts of this invention. The question that comes to almost everyone’s mind is, how do they work? How are fireworks made and how can they give off light, colours and noise at the same time? Well, these are pretty complex and different types of fireworks are made differently. Most fireworks use the main source which is called an aerial shell (small tube). It is made of gunpowder which is also explosive. This tube contains explosive materials or chemicals. All the lights, colours, and smoke coming from these chemicals.
Science of Fireworks
Fireworks are the most amazing thing because they show the great combination of both chemistry and physics at the same time. When you give some heat to the tube, the chemicals inside the aerial shell start chemical reactions. The explosions, noises and smoke you see or hear are the chemical reactions happening in a sequence simultaneously. The chemicals inside the shell, when combined with oxygen in the air, release smoke and other gases such as carbon monoxide, carbon dioxide and nitrogen during the process. However, the colours you see are compounds also known as metal salts, that are packed in a shell.
Calcium or strontium gives off red colour, sodium gives yellow and orange while barium and copper give off blue or green colour on burning. On the other hand, the energy in the form of heat, light and sound, coming out from the cardboard shell is because of the law of physics which is called the law of conservation of energy.
Can you buy Fireworks in the UK?
According to the law of the United Kingdom, one with the age less than 18, is not allowed to buy adult fireworks. There are several licensed companies supplying fireworks in the market as well as through online platforms. However, according to their policies, you cannot buy them if you are under 18. Also, it is not allowed for people to possess fireworks between 11 pm and 7 am except on certain major occasions. The law also says that no one can set off or throw fireworks (including category 1) in the street or public places.
What are the types of fireworks?
There are many different types of fireworks each is known for its kind of specifications and speciality. Some of the most popular types of fireworks are:
- Rocket: most common and popular because of its ability to climb to an enormous height. It can be of almost 30 -60 metres, depending on the quality and its type.
- Roman Candle: Made of a cardboard tube filled with balls that shoot out different coloured stars after ignition
- Fountains: It gives off a wonderful and spectacular experience without loud noise. It often gives surprising sound effects like whistles. These fireworks release shower of sparks and last for several minutes.
- Mine: This gives a short term but the dramatic effect of shooting-coloured stars with flashes and bangs.
- Cake: It generally consists of a combination of roman candles and rockets. Usually, they last for a few minutes.
- Sparklers: most liked type of firework, especially for children over 10 or 11. It consists of explosive chemicals stuck on a metal stick and gives off coloured light while ignited.
Are fireworks legal in the UK?
In the UK, there are 4 categories of fireworks. F1, F2, F3 and F4. F2 and F3 categories contain the fireworks that are allowed for the retailers to sell. Consumer fireworks fall into the first two categories. However, these fireworks also have their requirements of safety. Category F2 requires a distance of 8 to 15 metres and F3 requires up to 25 metres of distance. Whereas, category F4 is only allowed for professional use. Only professional fires are allowed to light these fireworks and they are usually supplied without a fuse. This category is considered industrial fireworks. The F1 category contains indoor fireworks that are allowed for those under 18 as well.
5 facts about fireworks
Whether it’s a small event, or a big major celebration, lighting up the night sky with colours, sparks, lights and smoke has become a popular tradition. Have you ever felt curious about where they came from, and how they became so common? Well, here are some facts you might have never heard about.
- Fireworks first originated in China. A mixture of potassium nitrate, charcoal, sulphur and gunpowder was poured into bamboo sticks that would give off a big bang when ignited.
- Not all types of fireworks are designed to shoot towards the sky.
- Different metal salts are used in the manufacturing of fireworks for the different colours that you feel are fascinating to watch.
- Fireworks are not legal everywhere. Some places like Illinois, Massachusetts have banned consumer fireworks.
- The world's largest firework went off in 2020, weighing over 2 tons.
Fireworks are one of the most popular things that gather families and friends and make them enjoy the most magical moments. Now that you know much about fireworks, hope you are not left with any curiosity.
