"Bob Pastorio" wrote in message
On 20 Oct 2003 16:29:08 -0400, Don Saklad
Would there be any advantage using aluminum foil in the oven on pans by
placing the foil dull side up?...
So far with respect to the question, resources explaining this do not
technical reasons for their explanations.
Shiny side reflects more heat than the dull side.
Shiny side reflects *light* less diffusedly than the dull side. Heat
Except for radiant heat which is reflected.