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antikristuseke · 06-03-10, 10:56 AM

The temperature is high enough, but the surface area of the coal is not large enough to transfer enough heat to cause ignition because coals are generally poor conductors of heat.

06-03-10, 10:56 AM	#21
antikristuseke Silent Hunter Join Date: Jun 2007 Location: Estland Posts: 4,330 Downloads: 3 Uploads: 0	The temperature is high enough, but the surface area of the coal is not large enough to transfer enough heat to cause ignition because coals are generally poor conductors of heat.