Andrew Levick's beautiful thermal images of recalescence. This is the phenomenon in which a liquid which has been cooled below its equilibrium freezing point heats up when it begins to crystallise. The 'latent heat' of crystallisation causes the temperature to rise to the equilibrium freezing temperature. In these movies the dynamics of the recrystallistion cause several different crystal growth patterns including dendritic (needle-like) crystal growth. The music is Jesu Joy of Man's Desiring by Leo Kottke
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