Dimitri wrote:

"Bob Pastorio" wrote in message
...

wrote:


On 20 Oct 2003 16:29:08 -0400, Don Saklad
wrote:


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
give 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
isn't reflected.

Pastorio

Except for radiant heat which is reflected.

From a heat source that glows - lamp, rod or flame. I don't think
that heat radiating from a hot oven wall will be reflected.

Pastorio