Because the static electricity in synthetic clothing can create sparks capable of detonating fireworks, those who make shells must stick ... more than 20 minutes. Japan has perfected the daytime ...

In a multi-break firework, stars are contained in separate cardboard compartments within the shell. Each compartment has its own bursting charge, which ignites and throws out the stars.

DAISEN, Akita Prefecture--Billed as one of Japan’s top fireworks festivals ... the Omagari version will set off 2,000 shells in five minutes in rapid-fire manner. “We intend to stage a ...