cox.net> writes: > > take out, shake the bottle once, and it turns from clear to opaque. > > What happens to the temperature of the super-cooled liquid > when it changes state? IOW, is the heat of fusion given up > at the normal freezing temp, or at the actual transition from > liquid to solid ... ? Good question. I think that the heat is supplied when the liquid actually freezes (when the crystals form). That's why the liquid has got to be supercooled for it to happen. It will heat up when the crystalization happens and without the supercooling reserve the process would revert to normal partial freezing. It would be nice to confirm this with a thermistor thermometer (or glass thermometer put in the bottle ?) and 'Gatorade'. Peter P. -- http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist