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quote:Originally posted by chimeraOpponents might say you forget two things:- freezing is crystallisation, and by poking at intervals with a (metal? recalibrated?) thermometer and possibly shaking the whole setup (freezer) you influence that process negatively.- secondly, and I admit it's a possibility, the minerals in the water, which are basically metallic, might play a role in the 'memory' department, much as some metals have a shape-memory, and that you do not take into account things like magnetic fields inside the freezer, with its pump kicking in at times etc. and they might even say that a metal container could give different results from using plastic or porcelain containers...[Seriously: I really applaud the experiment and the solid way you go about things... but science is part nitpicking, too, so I'll play devil's advocate to the bitter end here]
quote:Originally posted by DrPhil3rd run:Initial temperature: Warm water 23.8, Cold water 11.5Warm beat cold by 1 min 47 sec.
quote:Originally posted by DrPhil...1st run:Initial temperature: Warm water 46.9 , Cold water 12.0No contest. Cold reached zero first. (halted before Warm allowed to reach zero)2nd run:Initial temperature: Warm water 33.4, Cold water 12.3Cold beat warm by 1 min 13 sec.3rd run:Initial temperature: Warm water 23.8, Cold water 11.5Warm beat cold by 1 min 47 sec.
quote:Originally posted by gsmollinWhat is the temperature data, especially around 0 C. This is a very flat region in the temperature data because of the latent heat of fusion in the water, and I am frankly suspicious of temperature data at 0 C. That was why I inspected visually for ice formation.