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Aluminum foil is a conductor of heat energy. However, it does reflect radiation from heat sources, so it can reduce heat transfer through radiation. When aluminum foil is wrapped around something, pockets of air can be trapped. Trapped air is an excellent insulator against conduction and convection. However, if you want to prevent something like a can of soda from getting warm in your lunchbox, a wool sock will be a better insulator. Even paper toweling is better at insulating than aluminum foil when light is not shining.
Wiki User
∙ 15y ago
Wiki User
∙ 14y agoactually if you use aluminum foil in storering food, it may contaminate foods see aluminum toxicities.
Wiki User
∙ 10y agoIt reflects infrared radiation back to the surface it originated from. (Radiant Barrier)
Wiki User
∙ 15y agoBy reflecting radiant energy.
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Which type of thermal energy transfer does a foil wrapping reduce the most?
Conduction (Apex)
Is aluminum foil a better heat conductor than metal?
no because aluminum foil is a metal
Does aluminum foil reflect heat?
Yes all metal foils reflect heat (and other electromagnetic radiation: light, radio waves, etc.).
What radiation can be stopped by a piece of metal foil?
The radiation of an electron is Radiolectonoil. -Professor Lyle
What keeps things colder aluminum foil or Styrofoam?
aluminum
What is more reflective toward radiation mirror or aluminum foil?
I would have to say aluminum foil, since radiation can travel through glass. radiation is reflected from the surface of aluminum foil. With a mirror the radiation has to travel through a small layer of glass twice before the mirror is finished with it. Glass is not totally transparent, some light is absorbed so the naked aluminum reflects better.
How do we block TV and cellphone radiation?
You can create a Faraday Cage with aluminum foil.
How does aluminium foil keeps things warm?
Wrapping an object in aluminum foil reduces the energy loss through infra-red radiation. Foil reflects radiatant energy in the same way that a mirror reflects light. This is very effective in keeping food hot after it has been cooked.
What is the procedure of what keeps things colder plastic wrap or aluminum foil?
aluminum foil it seals the cold in alot more than plastic wrap.ans2, RIGHT answer, but reason not quite correct. The shiny aluminum will reflect all heat.And since your package is cold, the only ways it can heat up are conduction, radiation, and convection. Of which three, Aluminum foil will stop radiation and largely stop convection.
Is a aluminum foil a compound or elements?
Aluminum is element. Aluminum foil is made entirely of aluminum.
What is a good flexible materials for blocking Electromagnetic Radiation and or RFID tags?
Aluminum foil works perfectly.
Is aluminum foil an element?
Aluminum foil is made of Aluminum, which is an element. So yes Aluminum foil is a element
Is aluminum foil a conductor or insulator?
Insulator or conductor depending on the circumstances. Aluminum foil conducts heat, but it cuts off air flow and reduces evaporation of fluids. Aluminum foil reflects and thus minimizes radiation transmission. With foods it is more useful as an insulator. It also acts as an insulator on windows. But, aluminum is definitely a good heat conductor.
What elements is used in cookwear and cooking foil?
Tin foil... tin Aluminum foil... aluminum :)
Why do the pieces of aluminum foil have different masses?
Because all aluminum foil is not equal. Aluminum foil is available in a variety of thicknesses.
Which would melt first aluminum or iron?
The rate at which water freezes depends on the thermal conductivity of the container. Plastic is generally not very thermally conductive, whereas aluminum foil is more thermally conductive. Thus, as long as the foil is not very much thinner than the plastic, the water will freeze faster in the foil.
Why heat is only absorbed by an object when it is covered by an aluminium foil which remains cool?
The aluminum foil makes a good reflector for the infrared radiation. Although metals tend to be good conductors and aluminum is no exception, the fact that it is beaten extremely thin makes it difficult for to disperse throughout. As a result the aluminum stays relatively cool and the object in question continuously recycles the wasted heat energy that is emitted.
