It had long been thought that the cracking sound was the result of a tiny gas ... "What we saw was a bright flash on ultrasound, like a firework exploding in the joint," said Robert D.

A firework's breaks may also contain sound charges, which result in the cracking bangs and thunderous booms that thrill audiences. To make these loud explosions, which are usually accompanied by a ...

The official military name of the M-80, an illegal firework that was designed to simulate the sound of gunfire, is "military rifle fire simulator." Because of the effect caused, pyrotechnicians ...