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  2. Ultraviolet - Wikipedia

    en.wikipedia.org/wiki/Ultraviolet

    Ultraviolet radiation, also known as simply UV, is electromagnetic radiation of wavelengths of 10–400 nanometers, shorter than that of visible light, but longer than X-rays. UV radiation is present in sunlight , and constitutes about 10% of the total electromagnetic radiation output from the Sun.

  3. Thermal radiation - Wikipedia

    en.wikipedia.org/wiki/Thermal_radiation

    The radiation is not monochromatic, i.e., it does not consist of only a single frequency, but comprises a continuous spectrum of photon energies, its characteristic spectrum. If the radiating body and its surface are in thermodynamic equilibrium and the surface has perfect absorptivity at all wavelengths, it is characterized as a black body. A ...

  4. Flame detector - Wikipedia

    en.wikipedia.org/wiki/Flame_detector

    A fire emits radiation, which the human eye experiences as the visible yellow red flames and heat. In fact, during a fire, relatively sparsely UV energy and visible light energy is emitted, as compared to the emission of Infrared radiation. A non-hydrocarbon fire, for example, one from hydrogen, does not show a CO 2 peak on 4.3 μm because ...

  5. Radiation burn - Wikipedia

    en.wikipedia.org/wiki/Radiation_burn

    A radiation burn is a damage to the skin or other biological tissue and organs as an effect of radiation. The radiation types of greatest concern are thermal radiation, radio frequency energy, ultraviolet light and ionizing radiation. The most common type of radiation burn is a sunburn caused by UV radiation.

  6. When houses are fuel: Why firefighting was no match for a ...

    www.aol.com/houses-fuel-why-firefighting-no...

    The home ignites, becoming the fire’s fuel. Soon, it puts off radiant heat that can ignite the exterior of the home next door, which then allows fire to penetrate to the neighbor’s carpets ...

  7. Flame - Wikipedia

    en.wikipedia.org/wiki/Flame

    Temperature of atmosphere links to adiabatic flame temperature (i.e., heat will transfer to a cooler atmosphere more quickly) How stoichiometric the combustion process is (a 1:1 stoichiometricity) assuming no dissociation will have the highest flame temperature; excess air/oxygen will lower it as will lack of air/oxygen

  8. Emissivity - Wikipedia

    en.wikipedia.org/wiki/Emissivity

    The surface absorbs sunlight nearly completely, but has a low thermal emissivity so that it loses very little heat. Ordinary black surfaces also absorb sunlight efficiently, but they emit thermal radiation copiously. Solar heat collectors Similarly, solar heat collectors lose heat by emitting thermal radiation.

  9. Fire - Wikipedia

    en.wikipedia.org/wiki/Fire

    Fire is the rapid oxidation of a material (the fuel) in the exothermic chemical process of combustion, releasing heat, light, and various reaction products. [1] [a] At a certain point in the combustion reaction, called the ignition point, flames are produced.