question: How does tin foil in the oven not get hot?
comment: It does get hot. But since it is so thin, it has very little mass and a very high surface area compared to that mass. So by the time you've pulled it out of the oven, it's already cooled down quite a bit. That very low mass also means there is not much actual heat energy stored there to burn you.
passages: Foil made from a thin leaf of tin was commercially available before its aluminium counterpart. In the late 19th century and early 20th century, tin foil was in common use, and some people continue to refer to the new product by the name of the old one. Tin foil is stiffer than aluminium foil. It tends to give a slight tin taste to food wrapped in it, which is a major reason it has largely been replaced by aluminium and other materials for wrapping food.
   Tin was first replaced by aluminium in 1910, when the first aluminium foil rolling plant, "Dr. Lauber, Neher & Cie." was opened in Emmishofen, Switzerland. The plant, owned by J.G. Neher & Sons, the aluminium manufacturers, started in 1886 in Schaffhausen, Switzerland, at the foot of the Rhine Falls, capturing the falls' energy to process aluminium. Neher's sons, together with Dr. Lauber, discovered the endless rolling process and the use of aluminium foil as a protective barrier in December 1907.
   Tin foil
  
  Tin foil, also spelled tinfoil, is a thin foil made of tin. Actual tin foil was superseded after World War II by cheaper and more durable aluminium foil, which is still referred to as "tin foil" in many regions.
  
  Section::::History.
   Aluminium foil (or aluminum foil), often referred to with the misnomer tin foil, is aluminium prepared in thin metal leaves with a thickness less than ; thinner gauges down to are also commonly used. In the United States, foils are commonly gauged in thousandths of an inch or mils. Standard household foil is typically thick, and heavy duty household foil is typically . The foil is pliable, and can be readily bent or wrapped around objects. Thin foils are fragile and are sometimes laminated to other materials such as plastics or paper to make them more useful. Aluminium foil supplanted tin foil in the mid 20th century.
   Silicone has a very specific use as cookware, since it is not rigid. Most silicon used in cooking is in the form of spatulas or molds, and as such serve a different purpose than the previously discussed materials.
  
  Section::::Interaction of cooking techniques.
   A rubber PTC heater is made from a special type of rubber which conducts electricity, but only up to a temperature which is defined at the production of the PTC rubber. Typical design temperatures are between 0–80 °C (32–176 °F). The resistivity of the rubber increases exponentially with temperature for all temperatures up to the design temperature. Hence, it has strong PTC properties for all temperatures and heats up rapidly. Above this temperature the rubber is an electrical isolator and cease to produce heat. This makes the heater self-limiting. The rubber foil is thin and flexible and can be formed to any shape and size.
   The effect of microwaving thin metal films can be seen clearly on a Compact Disc or DVD (particularly the factory pressed type). The microwaves induce electric currents in the metal film, which heats up, melting the plastic in the disc and leaving a visible pattern of concentric and radial scars. Similarly, porcelain with thin metal films can also be destroyed or damaged by microwaving. Aluminium foil is thick enough to be used in microwave ovens as a shield against heating parts of food items, if the foil is not badly warped. When wrinkled, aluminium foil is generally unsafe in microwaves, as manipulation of the foil causes sharp bends and gaps that invite sparking. The USDA recommends that aluminium foil used as a partial food shield in microwave cooking cover no more than one quarter of a food object, and be carefully smoothed to eliminate sparking hazards.
   There are many cooking techniques that do not use oil as part of the process such as steaming or boiling. Water based techniques are typically used to cook vegetables or other plants which can be consumed as food. When no oil is present the method of heat transfer to the food is typically water vapor. Water vapor molecules do not have any significant surface interactions with the food surface. Since food, including vegetables, is cooked by the vaporization of water within the food, the use of water vapor as the mode of heat transfer has no effect on the chemical interactions on the surface of the food.
   The cooking surface is made of a glass-ceramic material which is a poor heat conductor, so only a little heat is lost through the bottom of the pot. In normal operation the cooking surface stays significantly cooler than with other stove cooking methods, but still needs to cool down before it can be safely touched.
   The interactions between food and pan are very dependent on the material that the pan is made of. Whether or not the pan is hydrophilic or hydrophobic, the heat conductivity and capacity, surface roughness, and more all determine how the food is cooked.
  
  Section::::Materials in cooking.:Stainless steel.
   Glass-ceramic from the LAS-System is a mechanically strong material and can sustain repeated and quick temperature changes. However, it is not totally unbreakable. Because it is still a brittle material as glass and ceramics are, it can be broken. There have been instances where users reported damage to their cooktops when the surface was struck with a hard or blunt object (such as a can falling from above or other heavy items).
   Tin foil was once a common wrapping material for foods and drugs; replaced in the early 20th century by the use of aluminium foil, which is now commonly referred to as "tin foil", hence one use of the slang term "tinnie" or "tinny" for a small pipe for use of a drug such as cannabis or for a can of beer. Today, the word "tin" is often improperly used as a generic term for any silvery metal that comes in sheets. Most everyday materials that are commonly called "tin", such as aluminium foil, beverage cans, corrugated building sheathing and tin cans, are actually made of steel or aluminium, although tin cans (tinned cans) do contain a thin coating of tin to inhibit rust. Likewise, so-called "tin toys" are usually made of steel, and may have a coating of tin to inhibit rust. The original Ford Model T was known colloquially as the "Tin Lizzy".
   Section::::Welding techniques.:Contact welding.
  
  This is the same as spot welding except that heat is supplied with thermal conduction of the pincher tips instead of electrical conduction. Two plastic parts are brought together where heated tips pinch them, melting and joining the parts in the process.
  
  Section::::Welding techniques.:Hot plate welding.
   Tinplate made via hot-dipped tin plating is made by cold rolling steel or iron, pickling to remove any scale, annealing to remove any strain hardening, and then coating it with a thin layer of tin. Originally this was done by producing individual or small packs of plates, which became known as the "pack mill process". In the late 1920s "strip mills" began to replace pack mills, because they could produce the raw plates in larger quantities and more economically.
  
  Section::::Tinning processes.:Electroplating.
   Thick film resistors may use the same conductive ceramics, but they are mixed with sintered (powdered) glass and a carrier liquid so that the composite can be screen-printed. This composite of glass and conductive ceramic (cermet) material is then fused (baked) in an oven at about 850 °C.
  
  Thick film resistors, when first manufactured, had tolerances of 5%, but standard tolerances have improved to 2% or 1% in the last few decades. Temperature coefficients of thick film resistors are high, typically ±200 or ±250 ppm/K; a 40-kelvin (70 °F) temperature change can change the resistance by 1%.
   BULLET::::- Silicone: Silicone bakeware is light, flexible and able to withstand sustained temperatures of 360 °C (675 °F). It melts around 500 °C (930 °F), depending upon the fillers used. Its flexibility is advantageous in removing baked goods from the pan. This rubbery material should not to be confused with the silicone resin used to make hard, shatterproof children's dishware, which is not suitable for baking.
  
  Section::::Types of cookware and bakeware.
   Section::::Uses.:Cooking.
  
  Aluminium foil is also used for barbecuing delicate foods, such as mushrooms and vegetables. Using this method, sometimes called a hobo pack, food is wrapped in foil, then placed on the grill, preventing loss of moisture that may result in a less appealing texture.
   Electrical firemaking involves the contact of an electrically heated object to tinder. A current is run through the object until it is red hot, like the burners on an electric stove, and it is brought into contact with the tinder, lighting it. For example, a foil-paper chewing gum wrapper will heat-up and ignite; or a flashlight battery coming into contact with a thin wire mesh (such as steel wool) may produce enough heat to ignite charcloth or other tinder. Larger batteries can generate sparks when its leads touch.
  
  Section::::See also.
  
  BULLET::::- Glossary of firelighting
  
  BULLET::::- Quest for Fire (film)
   Any flammable material may be used as long as it is finely divided. As the tinder gets thinner, the surface area and edges increase, making it ignite more easily.
  
  Wood tinder can be made by carefully shaving thin slivers off a larger piece. Another method which keeps these slivers together, is to make a feather stick. The driest wood, which makes the best tinder, are dead branches that have not fallen to the ground yet. 
   Resistive heaters can be made of conducting PTC rubber materials where the resistivity increases exponentially with increasing temperature. Such a heater will produce high power when it is cold, and rapidly heat up itself to a constant temperature. Due to the exponentially increasing resistivity, the heater can never heat itself to warmer than this temperature. Above this temperature, the rubber acts as an electrical insulator. The temperature can be chosen during the production of the rubber. Typical temperatures are between .
   Foil made from a thin leaf of tin was commercially available before its aluminium counterpart. Tin foil was marketed commercially from the late nineteenth into the early twentieth century. The term "tin foil" survives in the English language as a term for the newer aluminium foil. Tin foil is less malleable than aluminium foil and tends to give a slight tin taste to food wrapped in it. Tin foil has been supplanted by aluminium and other materials for wrapping food.
  
  The first audio recordings on phonograph cylinders were made on tin foil.
  
  Section::::History.:The first aluminium foil.
   The plastic used for manufacture of the oven bag must be chosen so that it will not melt at the temperature during cooking and thus spoil the food. To this end, many oven bags are formed from a heat-resistant nylon or polyester.
  
  The inventor of the plastic-based cooking bag is Gordon Lawry. However, Mr. Lawry was working for a company at the time and received payment of approximately 15 cents.
   Section::::Applications.:Tin plating.
   The tinders that ignite at a very low temperature work best. Easily-combustible materials such as char cloth or amadou work well as tinder, and can also hold an ember. By contrast, cotton fibers ignite at and will flash brightly but do not hold an ember. The bright flash of light is sometimes sufficient for demonstration purposes, but will not start a persistent fire.
   Modern ovens are typically fueled by either natural gas or electricity, with bottle gas models available but not common. When an oven is contained in a complete stove, the fuel used for the oven may be the same as or different from the fuel used for the burners on top of the stove.
  
presuppositions: Tin foil in the oven does not get hot. Tin foil is the oven does not get hot.
corrections: Tin foil does get hot in the oven, however it also cools quickly since it is so thin. Tin foil in the oven does get hot, but since it is so thin, it cools down quickly.
raw_presuppositions: Tin foil in the oven does not get hot. Tin foil is the oven does not get hot.
raw_corrections: Tin foil does get hot in the oven, however it also cools quickly since it is so thin. Tin foil in the oven does get hot, but since it is so thin, it cools down quickly.