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insolation keeps heat in best.
The best insulator of heat is probably polystyrene foam or fiber glass.
Copper.
food
Metals are known to be good conductors of heat as well as good conductors of electricity. Diamond is an exception though, being one of the best thermal conductors but a very poor electrical conductor.
The best material is copper of alumninium.
Mirrors reflect heat
insolation keeps heat in best.
The best insulator of heat is probably polystyrene foam or fiber glass.
Wood. Is the best material to use to seperate heat from cold.
Metals.
Copper.
Electricity does not conduct heat. Your question is meaningless.
100% cotton is the best. :x
cold stuff
food
LDPE