A flare, also sometimes called a fusée, fusee, or bengala, bengalo in several European countries, is a type of pyrotechnic that produces a bright light or intense heat without an explosion. Flares are used for distress … 展开

In the civilian world, flares are commonly used as signals, and may be ignited on the ground, fired as an aerial signal from a pistol-like 展开

Under the UN hazard number system, pyrotechnic flares are designated class 1.4 explosives.
Several U.S. states, including California and Massachusetts, have … 展开

• Blue light (pyrotechnic signal) – Early pyrotechnic signal
• Flare gun – Firearm that launches flares
• Magnesium torch – Bright light source made from magnesium, which burns underwater 展开

The earliest recorded use of gunpowder for signaling purposes was the 'signal bomb' used by the Chinese Song Dynasty (960–1279) as the Mongol … 展开

Maritime signal flare
In 1859, Martha Coston patented the Coston flare based on early work by her deceased husband … 展开

Flares produce their light through the combustion of a pyrotechnic composition. The ingredients are varied, but often based on 展开