The Naked Scientists

The Naked Scientists Forum

Author Topic: Why does kitchen foil never feel hot?  (Read 1584 times)

Bruno Santino

  • Guest
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?


 

blakestyger

  • Guest
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 »
 

lyner

  • Guest
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.
 

Offline Alan McDougall

  • Neilep Level Member
  • ******
  • Posts: 1285
  • Thanked: 14 times
    • View Profile
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 Naked Scientists Forum

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

 

SMF 2.0.10 | SMF © 2015, Simple Machines
SMFAds for Free Forums