-transparent plastic-white paper-foam rubber-aluminium foil-cotton fabricand plain can give the reason also!
Try soy sauce and citrusSaute garlic and onion Add 1/2 cup of soy sauce and a juice from 2 pieces of lemon Add 1 spoon sugar boil until thick
What are you insulating, electricity or heatI am going to answer for heatAluminium foil is a good conductor of heat, but it is also a reflector of heat, which means it lets heat pass through quickly (it is a metal) but it can trap heat in by reflecting it back (which is different from insulation in the normal sense)Cotton traps air which makes it a good insulatorBut paper can be shredded and does the same thing (they use it to insulate houses)Foam rubber also traps airActually, I really don't know, because of the many factors involvedLike a sheet of paper versus a sheet of cotton cloth, the paper is the better insulator, put stuffed into walls, it would be the cotton.
