The temperature of the material rises above its ignition point (even though much of the bacteria are destroyed by ignition temperatures). are good thermal insulators), and the temperature of the material rises. The heat is unable to escape (hay, straw, peat, etc. This may occur in several ways, either by oxidation in the presence of moisture and air, or bacterial fermentation, which generates heat. Spontaneous combustion can occur when a substance with a relatively low ignition temperature (hay, straw, peat, etc.) begins to release heat. He reported that ten thousand picul of oil that had been stored ignited spontaneously, setting fire to an arsenal. He drew this conclusion from a calamitous fire that occurred during the reign of Emperor Wu in the period 265-274 AD. Spontaneous combustion is thought to have first been recognized and described in ancient China by the philosopher Chang Hua in a book called Record of the Investigation of Things written at some point before 290 AD. ( December 2021) ( Learn how and when to remove this template message) Unsourced material may be challenged and removed. Please help improve this section by adding citations to reliable sources.
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