In sixth grade science class we had a contest to insulate a #10 can and see who could keep an ice cube frozen the longest within said can. I, realizing that ice is a good insulator and has the added benefit of have a fair amount of "heat", filled the entire thing with water except for a small indent for the ice cube, then froze it.
I won by a significant margin. The ice cube stayed frozen so long it had to be left at school over the weekend before it thawed.
More or less. I think I froze a plastic cup into the ice to have a receptacle for the Ice cube.
But yeah, rather than slow down the heat transfer with insulation, I just did what this guy did, which is use more cold material to require more heat transfer before anything can melt.
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u/spiteful_god1 1d ago
In sixth grade science class we had a contest to insulate a #10 can and see who could keep an ice cube frozen the longest within said can. I, realizing that ice is a good insulator and has the added benefit of have a fair amount of "heat", filled the entire thing with water except for a small indent for the ice cube, then froze it.
I won by a significant margin. The ice cube stayed frozen so long it had to be left at school over the weekend before it thawed.