The requirement that an inert gas, such as nitrogen, be used instead of air for inflation of tires on certain transport category airplanes was prompted by at least three cases in which the oxygen in air-filled tires combined with volatile gases given off by a severely overheated tire and exploded upon reaching autoignition temperature.
42.
Arc-producing elements of the equipment can also be isolated from the surrounding atmosphere by encapsulation, immersion in oil, sand, etc . Heat producing elements such as motor winding, electrical heaters, including heat tracing and lighting fixtures are often designed to limit their maximum temperature below the autoignition temperature of the material involved.
43.
The title of the film alludes to Ray Bradbury's 1953 novel " Fahrenheit 451 ", a dystopian view of the future United States, drawing an analogy between the autoignition temperature of paper and the date of the September 11 attacks; the film's tagline is " The Temperature at Which Freedom Burns ".
44.
If you look up that enthalpy and the heat capacities, you'll be able to tell what temperature difference " results " from the reaction, but I would interpret the question ( especially with its activation energy component ) as referring to the autoignition temperature of graphite ( although that probably depends weakly on the concentration of oxygen, so you'd need to specify if it's normal air or talk ) 15 : 28, 11 January 2010 ( UTC)
