Fuel is any material that stores energy that can later be extracted to perform mechanical work in a controlled manner. Most fuels used by humans undergo combustion, a redox reaction in which a combustible substance releases energy after it ignites and reacts with the oxygen in the air. Other processes used to convert fuel into energy include various other exothermic chemical reactions and nuclear reactions, such as nuclear fission or nuclear fusion. Fuels are also used in the cells of organisms in a process known as cellular respiration, where organic molecules are oxidized to release usable energy. Hydrocarbons are by far the most common source of fuel used by humans, but other substances, including radioactive metals, are also utilized.
Other articles related to "fuel, fuels":
... Fuel is an American rock band formed by guitarist/songwriter Carl Bell and bassist Jeff Abercrombie in 1989 ... the Joy, they changed the group's name to Fuel sometime in 1994 ...
... The ultimate fuel from a mass-to-performance perspective is hydrogen ... with other elements, like carbon, the hydrogen can be rendered into the easily burnable hydrocarbon fuels ... carbon, but do not mix well to form a stable fuel that can be easily burned ...
Famous quotes containing the word fuel:
“The particular source of frustration of women observing their own self-study and measuring their worth as women by the distance they kept from men necessitated that a distance be kept, and so what vindicated them also poured fuel on the furnace of their rage. One delight presumed another dissatisfaction, but their hatefulness confessed to their own lack of power to please. They hated men because they needed husbands, and they loathed the men they chased away for going.”
—Alexander Theroux (b. 1940)
“Beware the/easy griefs, that fool and fuel nothing./It is too easy to cry AFRIKA!/and shock thy street,/and purse thy mouth,/and go home to thy Gunsmoke, to/thy Gilligans Island and the NFL.”
—Gwendolyn Brooks (b. 1917)
“I had an old axe which nobody claimed, with which by spells in winter days, on the sunny side of the house, I played about the stumps which I had got out of my bean-field. As my driver prophesied when I was plowing, they warmed me twice,once while I was splitting them, and again when they were on the fire, so that no fuel could give out more heat. As for the axe,... if it was dull, it was at least hung true.”
—Henry David Thoreau (18171862)