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Flashover is a sudden widespread fire, which occurs when most surfaces in a space are heated until they emit flammable gases hot enough to auto-ignite. Before flashover, flammable gases may be emitted but are too cool to ignite. The trench effect occurs when a fire burns beside a steeply inclined surface.
Wildland fire behavior is affected by weather, fuel characteristics, and topography. Weather influences fire through wind and moisture. Wind increases the fire spread in the wind direction, higher temperature makes the fire burn faster, while higher relative humidity, and precipitation (rain or snow) may slow it down or extinguish it altogether ...
Rollover (also known as flameover) is a stage of a structure fire when fire gases in a room or other enclosed area ignite. [1] Since heated gases, the product of pyrolysis, rise to the ceiling, this is where a rollover phenomenon is most often witnessed. Visually, this may be seen as flames "rolling" across the ceiling, radiating outward from ...
A non-combustible material [17] is a substance that does not ignite, burn, support combustion, or release flammable vapors when subject to fire or heat, in the form in which it is used and under conditions anticipated. Any solid substance complying with either of two sets of passing criteria listed in Section 8 of ASTM E 136 when the substance ...
The creation of sparks from metals is based on the pyrophoricity of small metal particles, and pyrophoric alloys are made for this purpose. [2] Practical applications include the sparking mechanisms in lighters and various toys, using ferrocerium; starting fires without matches, using a firesteel; the flintlock mechanism in firearms; and spark testing ferrous metals.
Embers commonly cause house loss up to 500 meters from the fire front, [7] and in exceptional circumstances up to kilometers [8] In Australia, evaporative air conditioners are known to ignite from ember attack. Ember attack causes the filter pads from evaporative AC to ignite, and the fire spreads through the roof space destroying the home.
Poe may have intended the editor's suggestion that Zenobia kill herself as a jab at women writers or their editors. [6] Additionally, Poe mocks political writing and plagiarism of the period by depicting the editor with three apprentices who use tailor shears to cut apart other articles and splice them together.
This mixture is used in the NASA Standard Initiator, [2] which is used to ignite various pyrotechnic systems, including the NASA standard detonator. [3] It yields rapid pressure rise, generates little gas, emits hot particles when ignited, is thermally stable, has long shelf life, and is stable under vacuum. It is sensitive to static electricity.