The inside of a firework The firework “package” is divided into several chambers, according to HowStuffWorks. The bottom chamber is filled with gunpowder and is attached to a fast-burning fuse.

While many may be familiar with the explosion of a firework, the actual scientific processes that occur every time a firework is lit are much less visible.

The main fuse simultaneously lights two secondary fuses—a fast-acting side fuse that ignites the lift charge, and a time-delay fuse buried inside the shell that leads to the heart of the firework.

It is a time for celebration, family, and fireworks. But before you light that fuse, officials urge you to put safety first.

With the Fourth of July holiday weekend comes the traditional fireworks, but before you light up in Horry County law enforcement officials are encouraging everyone to know the rules.

The fuse must be the proper length and burn duration so that it reaches the interior ignition stage at (or very close to) the apex of the firework's height.

A firework is being pulled from store shelves in New Hampshire over safety concerns.

Let’s light the fuse on what tariffs mean for your Independence Day fireworks Nearly 99% of the fireworks lighting up American skies are made in China.