Why does kitchen foil never feel hot?

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Bruno Santino

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Why does kitchen foil never feel hot?
« on: 23/06/2008 13:45:15 »
Bruno Santino  asked the Naked Scientists:

Why does kitchen foil (aluminium) never  get hot no matter how long you leave it inside a  hot oven? I know aluminium stops radiated heat energy  been transferred, but being a metal it should get  hot.

Does the thickness of the foil has anything  to do with it?

Many  thanks!
 Bruno - UK

What do you think?

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blakestyger

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Why does kitchen foil never feel hot?
« Reply #1 on: 23/06/2008 17:08:16 »
It has a very low specific heat so it heats and cools very quickly - being very thin helps too as there is less mass so it holds less heat. But it does get to oven temperature.
« Last Edit: 23/06/2008 17:09:49 by blakestyger »

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lyner

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Why does kitchen foil never feel hot?
« Reply #2 on: 23/06/2008 19:51:31 »
Actually, Aluminium has quite a high specific heat (as metals go). It has a very small Mass, to its actual heat capacity is small.

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Offline Alan McDougall

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Why does kitchen foil never feel hot?
« Reply #3 on: 25/06/2008 21:33:40 »
Hi ,

Blake and Sophie have siad it all.
The Truth remains the Truth regardless of our beliefs or opinions the Truth is always the Truth even if we know it or do not know it (The Truth remains the Truth)