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.
Famous quotes containing the word fire:
“My arising prodigal
Sun the father his quiver full of the infants of pure fire ...”
—Dylan Thomas (19141953)
“Oh! that thy love might overflow my Heart!
To fire the same with Love: for Love I would.
But oh! my streightned Breast! my Lifeless Sparke!
My Fireless Flame! What Chilly Love, and Cold?
In measure small! In Manner Chilly! See!
Lord, blow the Coal: Thy Love Enflame in mee.”
—Edward Taylor (16451729)
“The fire burns as the novel taught it how.”
—Wallace Stevens (18791955)