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.

Read more about FuelChemical, Nuclear, World Trade, Use Over Time, Classification of Fuel

Other articles related to "fuel, fuels":

Zip Fuel - Description
... The ultimate fuel from a mass-to-performance perspective is hydrogen ... the hydrogen can be rendered into the easily burnable hydrocarbon fuels ... content than carbon, but do not mix well to form a stable fuel that can be easily burned ...
Delta-v - Orbital Maneuvers
... During the burn the mass of the spacecraft will decrease due to use of fuel, the time derivative of the mass being (3) If now the direction of the force, i.e ... mass m one gets (5) Assuming to be a constant not depending on the amount of fuel left this relation is integrated to (6) which is the well known "rocket equation" If for example ... a non-constant function of the amount of fuel left the capacity of the reaction control system is computed by the integral (5) ...
Fuel (band)
... Fuel is an American rock band formed by guitarist/songwriter Carl Bell and bassist Jeff Abercrombie in 1989 ... Small the Joy, they changed the group's name to Fuel sometime in 1994 ...
Zlín Z 37 - Specifications (Z-37A)
... run less than 100 metres in still air Fuel Capacity 250 litres Fuel Grade Not less than 73 Octane (Unleaded 95 usually used) Fuel Consumption 52 ...
English Electric Lightning - Design - Overview
... The fuselage was tightly packed, leaving no room for fuel tankage or main landing gear ... each wing contained a fairly conventional three-section main fuel tank and leading-edge tank, holding 312 imp gal (1,420 l) the wing flap also contained a 33 imp gal (15 ... sandwiched outboard of the main tanks and aft of the leading edge tanks, with the flap fuel tanks behind ...

Famous quotes containing the word fuel:

    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 “Gilligan’s 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 (1817–1862)

    It is now many years that men have resorted to the forest for fuel and the materials of the arts: the New Englander and the New Hollander, the Parisian and the Celt, the farmer and Robin Hood, Goody Blake and Harry Gill; in most parts of the world, the prince and the peasant, the scholar and the savage, equally require still a few sticks from the forest to warm them and cook their food. Neither could I do without them.
    Henry David Thoreau (1817–1862)