When a fuel burns in plenty of air, it receives enough oxygen for complete combustion. Complete combustion needs a plentiful supply of air so that the elements in the fuel react fully with oxygen. Fuels such as natural gas and petrol contain hydrocarbons. These are compounds of hydrogen and carbon only.
eidolon (plural eidola or eidolons) 1  An image or representation of an idea; a representation of an ideal form; an apparition of some actual or imaginary entity, or of some aspect of reality. 1936, Henry Miller, Black Spring: As a species it is extinct; as an eidolon it retains its corporeality â but only if maintained in a state of equipoise.
For other uses, see Eon (disambiguation). Eon is a 1985 science fiction novel by Greg Bear. It is the first story written in The Way fictional universe. Events in Eon take place in 2005, when the U.S. and U.S.S.R. are on the verge of nuclear war. In that tense political climate, a 290 km asteroid is detected, following an anomalous and very powerful energy burst just outside the solar system.