Tin Foil

[WarSong]

How come tin foil does not get hot when you throw it in the oven? It metal right? But it doesn't get hot? wakarimasen

 

[VBboy]

It gets very hot. It just cools very quickly, so maybe you waited too long to touch it.

 

[ThisIsMatt]

It doesn't?

It does, it just releases heat very fast...that's why it's used for heatsinks.

 

[VBboy]

Originally posted by: ThisIsMatt
It doesn't?

It does, it just releases heat very fast...that's why it's used for heatsinks.

Aluminum is used for heatsinks, not tin foil

 

[NuclearFusi0n]

"releases heat faster"

jeebus, somebody explain the concept of specific heat...i'm too lazy.

 

[ThisIsMatt]

Originally posted by: VBboy

Originally posted by: ThisIsMatt
It doesn't?

It does, it just releases heat very fast...that's why it's used for heatsinks.

Aluminum is used for heatsinks, not tin foil

Who actually uses tin "tin foil"? Do they even sell tin foil?

 

[Chaotic42]

Fun Aluminum Facts (from http://www.benchtest.com/alum&copp.html)

Thermal Conductivity @ 0 - 100°C-
Aluminum- 237 W m-1 K-1

Specific Heat @ 25°C-
Aluminum- 900 J K-1 kg-1

Linear Expansion Coefficient @0-100°C-
Aluminum- 23.5 x10-6 K-1

Weight 2"x1"x5" block-
Aluminum- 0.9818 pounds


What is Specific Heat? (From http://hyperphysics.phy-astr.gsu.edu/hbase/thermo/spht.html#c1)

The specific heat is the amount of heat per unit mass required to raise the temperature by one degree Celsius. The relationship between heat and temperature change is usually expressed in the form shown below where c is the specific heat. The relationship does not apply if a phase change is encountered, because the heat added or removed during a phase change does not change the temperature.

 

[WarSong]

Originally posted by: NuclearFusi0n
"releases heat faster"

jeebus, somebody explain the concept of specific heat...i'm too lazy.

somebody please cause i just heated up some jenos pizza on tinfoil and i grabbed it right out of the oven. my alpha pal8942 doensn't dissipate (sp.?) heat that fast

 

[WarSong]

Originally posted by: Chaotic42
Fun Aluminum Facts

Thermal Conductivity @ 0 - 100°C-
Aluminum- 237 W m-1 K-1

Specific Heat @ 25°C-
Aluminum- 900 J K-1 kg-1

Linear Expansion Coefficient @0-100°C-
Aluminum- 23.5 x10-6 K-1

Weight 2"x1"x5" block-
Aluminum- 0.9818 pounds

 

[dighn]

its so thin that it retains little heat which dissipates rapidly after being exposed to air and/or touched

 

dighn is correct, try this ;

Take a 2 to 3 oz piece of aluminum and a piece of tinfoil, place both in the oven at 250 F, heat for twenty minutes, now remove both, the larger mass of aluminum will retain the heat much longer than the foil.