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Basic Theory of Fireworks and Firecrackers

Chemical Explosives is an assembly consisting of solid material or liquid or mixture of both that when subjected to the action (such as impact, heat, and friction) can lead to high-speed reaction accompanied by the formation of gases and heat and pressure effects are very high. Chemical explosives can be divided into two types, namely low explosive (low yield) and high explosive (high explosive power).

Low explosive explosives are explosives that have a low detonation velocity (velocity of detonation) between 400 and 800 meters per second. While the high explosive detonation velocity explosive has between 1,000 and 8500 meters per second. Low explosive explosives are often called propellant (booster) that is widely used as the bullets and rockets

Among low explosives are explosive known gunpowder (black powder or gun powder) and smokeless powder. For some communities in Indonesia, gunpowder is widely used as a maker of fireworks, including firecrackers and bombs rock fish. Gunpowder is the oldest type of explosives were found by the Chinese in the 9th century. Aside from being a maker of firecrackers and fireworks, gunpowder now widely used as propellants and rocket shells, rocket-signals, fireworks, explosive fuse, and fuse explosive wait.

Composition of Firecrackers

Some compositions are known to manufacture black powder, among others:

mixture of potassium nitrate (KNO3), charcoal, and sulfur;

mixture of sodium nitrate (NaNO3), charcoal, and sulfur;

mixture of potassium nitrate and charcoal (without sulfur); and

pyrodex, a mixture of potassium nitrate, potassium perchlorate (KClO4), charcoal, sulfur, cyanoguanidin, sodium benzoate, and dextrin.

However, firecracker maker in Indonesia itself, not much use materials above, only a few such as Potassium, and sodium only.

i thought this is enough for now, for fire crackers, about fireworks is waiting for the next post.

Tahun Baru, Tahun 2011

yo.o.o.o.o...happy new year fo all.....
how about you all, do you pepople anjoy last year anfs gonna make a resolution for next ?
Ya, me to...

do you know, what so indentic with new year celebration ?
Is that roasting s turkey? ,owh..not, that is when we are thanks giving

I gues, this is the best answer

yes.....that is fire works party..

you know about fire works, i'll tell u about fire works, from first time it been found

Founded in China around 9-century, by accident, a chef mixing three ingredient of black powder or the potassium nitrate, sulfur, and charcoal, which comes from his kitchen. It turned out that the third mixture is flammable materials.

If the three ingredients are incorporated into a piece of bamboo that is then burned in the axis that will explode and make a loud explosion, they believed to expel evil spirits. In its development, this type of firecracker is also believed to be used in the celebration of marriage, the war victory, lunar eclipse events, and religious ceremonies.

Just at the time of the Song dynasty built fireworks factory that later became the basis of the manufacture of fireworks because of more emphasis on colors and shapes borax fire in the sky( a lot of sparkle with diferent colours ) until finally distinguished. The tradition of fireworks then spread to all corners of the world.

In Indonesia itself ou own tradition of fireworks brought by the Chinese. One observer of history Betawi, Alwi Shahab believe that marriage tradition Betawi people who use fireworks to enliven the atmosphere to mimic the Chinese people who live around them.

The spreading of fireworks now is getting larger, and, no one didn't know about it, except junggle pople ( ...^_^LOL )

I guess, that sit from me, for the next, Fire works chapter two
hope you like it.