Cooling effect

Its a odd topic. Actually I have observed that when I put my hand inside a cookie box or a puffed rice container it seems to be cooler than surroundings inside the containers. Its nothing explanatory to say that these containers are airtight. Can anyone explain anything?

Easy Math Editor

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Comments

My best guess would be 1) the box, being made out of paper, is something of a good insulator, i.e., acts sort of like a poor man's thermos bottle, and 2) the temperature inside the box represents the temperature average over 24 hours. Hence, if one put one's hand inside it during the day, when outside temperatures are likely to be warmer than the average, it'll feel cooler. But by only a very small amount, though.

Michael Mendrin - 5 years, 6 months ago

I think I am a little more sensitive. Thanks for the answer. Actually I had a guess. The cookies and puffed rice are dry foods. So they may soak the water vapour of the air inside the box. As vapour is heat storing component so temperature may go down. What is ur view sir??

Shyambhu Mukherjee - 5 years, 6 months ago

I was assuming that the cookie box has already been opened and is being kept in storage. You didn't mention about opening up a sealed cookie box.

Michael Mendrin - 5 years, 6 months ago

@Michael Mendrin – No I didn't talk about opening up any new box. I was talking about a box of near about my age:) What do u think on vapour case as I said??

Shyambhu Mukherjee - 5 years, 6 months ago

@Shyambhu Mukherjee – As Righved said, dry nitrogen is commonly used in sealed food packages to reduce oxidation. So, when one opens package sealed with such dry nitrogen and puts an hand inside, there will be a slight evaporation of the skin moisture, and that will momentarily produce a cooling effect, which you feel. The fact that the sealant air is nitrogen is not relevant to this effect, only that the gas inside the package is dry.

Not all cookie packages have "dry air" inside, particularly the "locally made" cookies.

Michael Mendrin - 5 years, 6 months ago

Well I think nitrogen is put as preservative for the packet of lays or maybe cookies and that is why u feel cooler inside :P

Righved K - 5 years, 6 months ago

@Righved K – Why? is nitrogen a cool guy even without cooling?:) Also I was not talking about packets.

Shyambhu Mukherjee - 5 years, 6 months ago

@Shyambhu Mukherjee – Nah nitrogen gas is present at temperatures a little below the room temperature...in the packet of lays so maybe in the cookie box too that is why again I mentioned 'maybe'....anyways if u r having any dillema for lays being half filled I gave u the answer...it may fit in ur problem I don't know about that... Anyways. keep thinking:P

Righved K - 5 years, 6 months ago

@Righved K – Thanks for sharing ur view.

Shyambhu Mukherjee - 5 years, 6 months ago

Follow me for a follow back!!

Pauline Fwalter - 5 years, 6 months ago

Hey this user has been removed!!

Shyambhu Mukherjee - 5 years, 6 months ago

Math	Appears as
Remember to wrap math in `\(` ... `\)` or `\[` ... `\]` to ensure proper formatting.
`2 \times 3`	$2 \times 3$
`2^{34}`	$2^{34}$
`a_{i-1}`	$a_{i-1}$
`\frac{2}{3}`	$\frac{2}{3}$
`\sqrt{2}`	$\sqrt{2}$
`\sum_{i=1}^3`	$\sum_{i=1}^3$
`\sin \theta`	$\sin \theta$
`\boxed{123}`	$\boxed{123}$