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Combustion
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- Fire is an exothermic, self-perpetuating reaction that happens when a solid, liquid or gas-phase fuel undergoes rapid oxidation. This is known as combustion, and the reaction releases heat, light and further chemical reactions.
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Fire is the rapid oxidation of a material (the fuel) in the exothermic chemical process of combustion, releasing heat, light, and various reaction products. [1] [a] At a certain point in the combustion reaction, called the ignition point, flames are produced.
What we know for sure is that fire is the visible effect of combustion – an exothermic chain reaction requiring the fire triangle: oxygen, heat and some type of fuel.
- Ian Farrell
The heat generated by the reaction is what sustains the fire. The heat of the flame will keep remaining fuel at ignition temperature. The flame ignites gases being emitted, and the fire spreads. As long as there is enough fuel and oxygen, the fire keeps burning. Fuel + oxygen (from the air) = combustion products (mainly CO 2 + H 2 O) + heat energy.
Oct 7, 2024 · Fire, rapid burning of combustible material with the evolution of heat and usually accompanied by flame. It is one of the human race’s essential tools, control of which helped start it on the path toward civilization. The original source of fire undoubtedly was lightning, and such fortuitously.
- The Editors of Encyclopaedia Britannica
- Fire is a rapid burning of combustible material in the presence of oxygen manifested as flames. It is usually accompanied by heat and light. Fire i...
- Evidence suggests that the earliest controlled use of fire by hominins was about 1,420,000 years ago. However, it was not until about 7000 BCE that...
- Early humans used fire to keep warm and cook their food. They also learned to use it in hunting and warfare, to kill insects, and to clear forests...
- The most widespread method of producing fire among prehistoric peoples was the friction method. Most commonly, a pointed hardwood was twirled betwe...
- Fire has been an essential element at every stage of the growth of civilization. Much of the history of technology and science might be characteriz...
Fire is a chemical reaction that converts a fuel and oxygen into carbon dioxide and water. It is an exothermic reaction, in other words, one that produces heat.
May 6, 2024 · These three heat transfer mechanisms—conduction, convection, and radiation—work in concert to facilitate the spread of heat and fire. Conduction transfers heat through direct contact, convection carries heat through fluid currents, and radiation disperses heat through electromagnetic waves.
Mar 14, 2014 · The process, called pyrolysis, releases atoms and energy. Unbound atoms form a hot gas, mingling with oxygen atoms in the air. This glowing gas — and not the fuel itself — produces the spooky blue light that appears at the base of a flame.
