Search results
Results from the WOW.Com Content Network
In the United States, RIFAs have gradually spread north and west despite intense efforts to stop or eliminate them. As of 2011 in the United States they were found in most of the southern states: Alabama, Arkansas, Arizona, California, Delaware, Florida, Georgia, Kentucky, Louisiana, Mississippi, North Carolina, New Mexico, Oklahoma, South Carolina, Tennessee, Texas, and Virginia.
Flame spread, or surface burning characteristics rating,[1] is a ranking derived by laboratory standard test methodology of a material's propensity to burn rapidly and spread flames. There are several standardized methods of determining flame spread,
The fire triangle. The fire triangle or combustion triangle is a simple model for understanding the necessary ingredients for most fires. [ 1 ] The triangle illustrates the three elements a fire needs to ignite: heat, fuel, and an oxidizing agent (usually oxygen). [ 2 ] A fire naturally occurs when the elements are present and combined in the ...
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.
AOL latest headlines, entertainment, sports, articles for business, health and world news.
The Centralia mine fire is a coal-seam fire that has been burning in the labyrinth of abandoned coal mines underneath the borough of Centralia, Pennsylvania, United States, since at least May 27, 1962. Its original cause and start date are still a matter of debate. [1][page needed][2][3][page needed] It is burning at depths of up to 300 ft (90 ...
Spread Component (SC) (as used in the National Fire Danger Rating System) is a rating of the forward rate of spread of a headfire. [1] Deeming states that "the spread component is numerically equal to the theoretical ideal rate of spread expressed in feet-per-minute." This carefully worded statement indicates both guidelines (theoretical) and ...
Gun harmonisation. Fire from the eight machine guns of a Hawker Hurricane is shown converging to a point, then diverging. (Drawing not to scale.) In aerial gunnery, gun harmonisation, convergence pattern, convergence zone, convergence point or bore-sight point refers to the aiming of fixed guns or cannon carried in the wings of a fighter aircraft.