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What is fire?

Discussion in 'Channel Zero' started by MAR, Jun 20, 2006.

  1. MAR

    MAR Veteran Member

    Joined: Jun 2, 2005 Messages: 7,264 Likes Received: 256
    I was wondering this for a while so i finally decided to look it up and the answers i got where wildly facinating, so I decided to share.

    Check it out.

    "Fire is a phenomenon of combustion manifested in intense heat and light in the form of a glow or flames."

    "Fire is not a state of matter: rather, it is an exothermic chemical reaction accompanied by intense heat released during a rapid oxidation of combustible material. Fire may be visible as the brilliant glow and flames and may produce smoke.
    Fires start when a flammable or combustible material with adequate supply of oxygen or other oxidizer is subjected to enough heat. The common fire-causing sources of heat include a spark, another fire (such as an explosion, a fire in the oven or fireplace, or a lit match, lighter or cigarette) and sources of intense thermal radiation (such as sunlight, a flue, an incandescent light bulb or a radiant heater). Mechanical and electrical machinery may cause fire when combustible materials used on or located near the equipment are exposed to intense heat from Joule heating, friction or exhaust gas. Fires can sustain themselves by the further release of heat energy in the process of combustion and may propagate, provided there is continuous supply of oxygen and fuel. Fires may become uncontrolled and cause great damage to and destruction of human life, animals, plants and property.

    Fire is extinguished when any of the elements of so-called fire triangleheat, oxygen or fuel—is removed. The unburnable solid remains of fire are called ash.
    Flames can conduct electricity, as a small portion of any fire is ionized. This has been demonstrated in the laboratory and also in large wildfires that occur in the vicinity of power lines. This ability to conduct electricity is due to its partially plasmaic nature.

    A flame is an exothermic, self-sustaining, oxidizing chemical reaction producing energy and glowing gas, of which a very small portion is plasma. It consists of reacting gases emitting visible and infrared light, the frequency spectrum of which is dependent on the chemical composition of the burning elements and intermediate reaction products.
    In many cases such as burning organic matter like wood or incomplete combustion of gas, incandescent solid particles, soot produces the familiar red-orange 'fire' color light. This light has a continuous spectrum. Complete combustion of gas has a dim blue color due to the emission of single wavelength radiations from various electron transitions in the excited molecules formed in the flame. Usually oxygen is involved, but hydrogen burning in chlorine produces a flame as well, producing the toxic acid hydrogen chloride (HCl). Other possible combinations producing flames, amongst many more, are fluorine and hydrogen, or hydrazine and nitrogen tetroxide. Recent discoveries by the National Aeronautics and Space Administration (NASA) of the United States also has found that gravity plays a role. Modifying the gravity causes different flame types."

    "The glow of a flame is somewhat complex. Black-body radiation is emitted from soot, gas, and fuel particles, though the soot particles are too small to behave like perfect blackbodies. There is also photon emission by de-excited atoms and molecules in the gases. Much of the radiation is emitted in the visible and infrared bands. The color depends on temperature for the black-body radiation, and chemical makeup for the emission spectra. The dominant color in a flame changes with temperature. The photo of the forest fire is an excellent example of this variation. Near the ground, where most burning is occurring, it is white, the hottest color possible for organic material in general, or yellow. Above the yellow region, the color changes to orange, which is somewhat cooler, then red, which is cooler still. Above the red region, combustion no longer occurs, and the uncombusted carbon particles are visible as black smoke.
    The common distribution of a flame under normal gravity conditions depends on convection, as soot tends to rise to the top of a general flame, such as in a candle in normal gravity conditions, making it yellow. In microgravity or zero gravity, such as an environment in outer space, convection no longer occurs, and the flame becomes spherical, with a tendency to become more blue and more efficient. There are several possible explanations for this difference, of which the most likely one given is that the cause is the hypothesis that the temperature is evenly distributed enough that soot is not formed and complete combustion occurs. Experiments by NASA in microgravity reveal that diffusion flames in microgravity allow more soot to be completely oxidised after they are produced than diffusion flames on Earth, because of a series of mechanisms that behaved differently in microgravity when compared to normal gravity conditions. Premixed flames in microgravity burn at a much slower rate and more efficiently than even a candle on Earth, and last much longer. These discoveries have potential applications in applied science and industry, especially concerning fuel efficiency.
    Fire ecology is the study of the interaction of living things with fire."


    I dont expect all of you to care or read this, but I know there are some people out there that might.
  2. CACashRefund

    CACashRefund 12oz Loyalist

    Joined: Oct 8, 2004 Messages: 14,171 Likes Received: 272
    Outside the administration building at Chernobyl there is a statue.


    It is Prometheus stealing fire from Gods and giving it to the humans...
  3. Evangelion>Ogre

    Evangelion>Ogre Senior Member

    Joined: Apr 9, 2006 Messages: 1,060 Likes Received: 4
    Fire hot...Me like fire, but fire hot.
    Me no touch fire.Fire hurt.
  4. AllTheWrongWords

    AllTheWrongWords Veteran Member

    Joined: Apr 30, 2006 Messages: 5,175 Likes Received: 162

    WEAK CRACKUH. Banned

    Joined: Jun 20, 2006 Messages: 6 Likes Received: 0
  6. En Sabah Nur

    En Sabah Nur Elite Member

    Joined: May 26, 2006 Messages: 2,875 Likes Received: 138

  7. Soup BDC

    Soup BDC Member

    Joined: Apr 7, 2006 Messages: 559 Likes Received: 0
    You don't even need to have Mar's name on this thread to know who would come up with this shit.
  8. shai

    shai Dirty Dozen Crew

    Joined: Jan 6, 2003 Messages: 17,602 Likes Received: 707
    I always considered fire to be a rapid chemical reaction characterized by heat and light.

    Then again, what do I know?
  9. Inhalant

    Inhalant Senior Member

    Joined: Jun 25, 2004 Messages: 2,290 Likes Received: 0
    Fire is cool! Fireworks are cooler.
  10. makeithappennn

    makeithappennn Elite Member

    Joined: Apr 7, 2006 Messages: 3,439 Likes Received: 37
    I can create fire at my finger tips.
  11. madsencarl

    madsencarl Senior Member

    Joined: Mar 3, 2006 Messages: 2,059 Likes Received: 62
    burn baby burn. jaze.
  12. Internerd

    Internerd Senior Member

    Joined: Apr 8, 2006 Messages: 2,007 Likes Received: 112
  13. MAR

    MAR Veteran Member

    Joined: Jun 2, 2005 Messages: 7,264 Likes Received: 256
    whats that suposed to mean?
  14. Kr430n5_666

    Kr430n5_666 Banned

    Joined: Oct 6, 2004 Messages: 19,229 Likes Received: 30

  15. Caught you SLIPPIN!!!!! You used this picture yesterday.