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Firewalking
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===Factors that prevent burning=== * Water has a very high [[specific heat capacity]] (4.184 J g<sup>−1</sup> K<sup>−1</sup>), whereas embers have a very low one. Therefore, the foot's [[temperature]] tends to change less than the coal's. * Water also has a high thermal conductivity, and on top of that, the rich blood flow in the foot will carry away the heat and spread it. On the other hand, embers have a poor thermal conductivity, so the hotter body consists only of the parts of the embers which are close to the foot. * When the embers cool down, their temperature sinks below the [[flash point]], so they stop burning, and no new heat is generated. * Firewalkers do not spend very much time on the embers, and they keep moving.
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