Fire is the rapid oxidation of a material in the exothermic chemical process of combustion, releasing heat, light, and various reaction products. Slower oxidative processes like rusting or digestion are not included by this definition.
The flame is the visible portion of the fire. If hot enough, the gases may become ionized to produce plasma. Depending on the substances alight, and any impurities outside, the color of the flame and the fire's intensity will be different.
Fire in its most common form can result in conflagration, which has the potential to cause physical damage through burning. Fire is an important process that affects ecological systems across the globe. The positive effects of fire include stimulating growth and maintaining various ecological systems. Fire has been used by humans for cooking, generating heat, signaling, and propulsion purposes. The negative effects of fire include water contamination, soil erosion, atmospheric pollution and hazard to human and animal life.
Read more about Fire: Fire Ecology, Fossil Record, Human Control, Protection and Prevention, Restoration
Famous quotes containing the word fire:
“We all live in a house on fire, no fire department to call; no way out, just the upstairs window to look out of while the fire burns the house down with us trapped, locked in it.”
—Tennessee Williams (1914–1983)
“I am grown old, and have possibly lost a great deal of that fire, which formerly made me love fire in others at any rate, and however attended with smoke: but now I must have all sense, and cannot, for the sake of five righteous lines, forgive a thousand absurd ones.”
—Philip Dormer Stanhope, 4th Earl Chesterfield (1694–1773)
“I thought it was a wonderfully conceptual act actually, to fire a replica pistol at a figurehead—the guy could have been working for Andy Warhol!”
—J.G. (James Graham)