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anim2 solidification

Sequence of photographs illustrating the onset and development of crystallisation in a heat pack: (a) the subcooled solution and metal trigger; (b) the metallic trigger is flexed; the solidification front at times (c) 3 s, (d) 5 s and (e) 6 s after triggering; and (f) the solution is completely solidified 7 s after triggering.
anim2 solidification
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