From Wikipedia -

Fire is the rapid oxidation of a combustible material releasing heat, light, and various reaction products such as carbon dioxide and water.

But to me, its an fascinating subject to photograph.  These pictures were taken while sitting around the campfire.  Even at ISO 6400, f/4 and 1/8000sec shutter speed to freeze it as still as possible, the chaotic energies and dynamics of the fire is undiminished.

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