Why can tinfoil be touched immediately after coming out of a super hot (hundreds of degrees) oven?
In: Other
Aluminum is a high thermal rate conductor.
In a foil form the heat is transferred nearly as soon as heat source is applied or removed.
Thickness is critical. If you take aluminum foil and heat a tightly wound roll, the heat will transfer much slower.
However the instant air is permitted between the layers heat retention drops.
If you have ever seen a car radiator, you have seen this technique for temperature exchange.
Air conditioners work the same way.
An additional benefit of the rapidly cooling foil, is the nice headwear that may be made so soon after the foil has been in an oven.
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