Crystallisation | Solidification of metals | Supercooling & nucleation | Microstructure formation 

In this video, we look at the phenomena of supercooling and nucleation, both of which are prerequisites for the solidification of liquids and melts, respectively.
00:00 Solidification of metals
00:23 Liquid state (melt)
00:48 Supercooling (undercooling)
02:18 Hand warmer
03:23 Nuclei
03:57 Supercooled water (freezing rain)
05:01 Heterogeneous nucleation
06:08 Homogeneous nucleation
06:57 Influencing nucleation by supercooling
07:40 Influencing nucleation by seeding
08:28 Heat of solidification
10:01 Thermal arrest