However, aluminum foil is not suitable in every case, so the correct use of aluminum foil is an important part of energy conservation. Insulating the room with aluminum foil in summer can help prevent sunlight from entering the room and reduce the temperature. Cover all windows completely with aluminum foil and secure with heavy tape, such as tape.
Glossy surfaces will reflect the rays of sunlight. You can also insulate cold foods when they are near the sun. For example, wrapping a cold soda can with aluminum foil keeps it frozen. Adding a layer of bubble paper between aluminum foil and soda can keep it cooler for longer. About HTMM. Conduction happens when thermal energy is transferred through a material. When atoms are tightly packed, as they are in a solid metal, the energy moves easily.
In a gas the atoms have more space, and the energy moves more slowly. Convection takes place when a liquid or gas expands. The answer is as light, both visible and invisible, or infrared. Some materials absorb light, and hence energy, better than others. As far as the convection goes, since the foil gets almost as hot as the food, and air can convect past the foil, I don't think the foil reduces that heat loss much. Follow-up on this answer.
Learn more physics! Related Questions. Still Curious? Mike W. I think the questioner is mixing up the two meanings of the word conductor, i. Aluminium foil is a great conductor of heat, which means it is a poor insulator when it is in direct contact with something hot. It is also so thin that heat can pass through it super easily when it has direct contact. This is they type of heat transfer that aluminium is NOT good at stopping. Plastic, rubber, wood, and ceramics are good insulators. Plastic coating is also used to cover most electrical wires in appliances.
Air is also a good insulator of heat. Aluminum is known for being a good conductor, but it is also a good insulator, as it reflects the radiation of heat back to its source. Skip to content.
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