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Fire is the rapid oxidation of a fuel in the exothermic chemical process of combustion, releasing heat, light, and various reaction products. [1] [a] Flames, the most visible portion of the fire, are produced in the combustion reaction when the fuel reaches its ignition point.
A fire retardant is a substance that is used to slow down or stop the spread of fire or reduce its intensity. This is commonly accomplished by chemical reactions that reduce the flammability of fuels or delay their combustion. [1] [2] Fire retardants may also cool the fuel through physical action or endothermic chemical reactions.
Flames of charcoal. A flame (from Latin flamma) is the visible, gaseous part of a fire.It is caused by a highly exothermic chemical reaction made in a thin zone. [1] When flames are hot enough to have ionized gaseous components of sufficient density, they are then considered plasma.
A "no smoking" sign at a gas station by order of the state fire marshal. The fire marshal is often charged with enforcing fire-related laws. A fire marshal, in the United States and Canada, is often a member of a state, provincial or territorial government, but may be part of a building department or a separate department altogether.
How does fire retardant work? The long-term fire retardant, often used to steer wildfires and protect critical infrastructure or populated areas, triggers a series of events once the flames ...
Fire protection engineering is the application of science and engineering principles to protect people, property, and their environments from the harmful and ...
Containment does not mean that a fire has been extinguished. According to the Western Fire Chiefs Association, it refers to the percentage of a fire’s perimeter that firefighters are confident ...
Colored fire is a common pyrotechnic effect used in stage productions, fireworks and by fire performers the world over. Generally, the color of a flame may be red, orange, blue, yellow, or white, and is dominated by blackbody radiation from soot and steam.