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Author Topic: Why Does Adding A Spoon Make This Coffee Cool Quicker ?  (Read 8620 times)

Offline neilep

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Dear Coffee Luffers,

Here, enjoy this coffee.....hmmm..it's a thing if beauty isn't it ?






I've been told that if I put a spoon in it, (or even make it with the spoon already in)...then the spoon will make the coffee cool a lot quicker !!

Why's that then ?


Guess I better drink it before it gets cold !!....

slurrrrrrrrrrrp !!.......yeuch !!!!....too late !!


 

Offline Karen W.

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Why Does Adding A Spoon Make This Coffee Cool Quicker ?
« Reply #1 on: 14/11/2007 14:16:56 »
I think the metal spoon would act like wick drawing the heat into the metal as a conductor and then allowing it to cool off faster as the unexposed end of the spoon would be cooling it down with the room temperature air. Like a cooler, in comparison to the hot coffee,At least thats my guess!
« Last Edit: 14/11/2007 18:39:53 by Karen W. »
 

Offline lightarrow

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Why Does Adding A Spoon Make This Coffee Cool Quicker ?
« Reply #2 on: 14/11/2007 15:41:20 »
I think the metal spoon wouldact like wick drwing the het into the metal as a conductorand then allowing it to cool off faster as the unexposed end of the spoon would be coling it dow with the room tempetature air.like a cooler i comparrison to the hot coffee.thats my guess!
You are reaching a degree in physics "Honoris Causa"  :)
 

Offline Bored chemist

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Why Does Adding A Spoon Make This Coffee Cool Quicker ?
« Reply #3 on: 14/11/2007 18:21:59 »
I doubt it's a big effect. You could always try an experiment.
 

Offline Karen W.

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Why Does Adding A Spoon Make This Coffee Cool Quicker ?
« Reply #4 on: 14/11/2007 18:47:30 »
I think the metal spoon would act like wick drawing the heat into the metal as a conductor and then allowing it to cool off faster as the unexposed end of the spoon would be cooling it down with the room temperature air. Like a cooler, in comparison to the hot coffee. At least thats my guess!
You are reaching a degree in physics "Honoris Causa"  :)

Is that your way of telling me I finally got something right??? LOL If so YAYYYYYYYYYY! LOL! Sorry I have gone in and corrected all the typos I made woooo whoooo I was a tired girl! LOL Sorry it was hard to read even for me ... LOL
 

Offline neilep

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Why Does Adding A Spoon Make This Coffee Cool Quicker ?
« Reply #5 on: 14/11/2007 19:49:48 »
THANK EWE ALL for your kind replies !!

Hmmm..I dunno about this Karen girl !!...I think she knows more than she realizes !!... ;)


....ewe have a great way of rationalizing the reasons Karen !!
 

Offline Karen W.

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Why Does Adding A Spoon Make This Coffee Cool Quicker ?
« Reply #6 on: 14/11/2007 20:43:33 »
Thats the big problem..! She knows more then she realizes she knows, you know? Meaning she doesn't even know what she knows, she knows, you know! LOL LOL!
 

Offline techmind

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Why Does Adding A Spoon Make This Coffee Cool Quicker ?
« Reply #7 on: 14/11/2007 22:57:56 »
I've been told that if I put a spoon in it, (or even make it with the spoon already in)...then the spoon will make the coffee cool a lot quicker !!

Why's that then ?

rrrrrrp !!.......yeuch !!!!....too late !!

I'm with Bored Chemist on this. I don't think it will make a huge difference. If you put a fairly heavy spoon in there, then that will absorb some heat initially until it reaches thermal equibrium. I doubt the rest of the spoon will have much of a wicking effect - compare the area of the exposed spoonhandle to the exposed top-surface of the coffee (and the cup/mug).
While you stir the drink then it should cool down quicker as you keep mixing/bringing the hottest liquid to the periphery (without stirring you'll get a more gradual thermal gradient which will reduce the rate of cooling).
 

lyner

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Why Does Adding A Spoon Make This Coffee Cool Quicker ?
« Reply #8 on: 14/11/2007 23:02:05 »
I'd go for the 'stirring' explanation. Evaporation on the surface is probably going to remove more heat than a bit of convection around the spoon handle - keeping the surface as warm as possible, by stirring, will produce more evaporation over the whole surface.
 

Offline lightarrow

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Why Does Adding A Spoon Make This Coffee Cool Quicker ?
« Reply #9 on: 15/11/2007 18:32:37 »
I think the metal spoon would act like wick drawing the heat into the metal as a conductor and then allowing it to cool off faster as the unexposed end of the spoon would be cooling it down with the room temperature air. Like a cooler, in comparison to the hot coffee. At least thats my guess!
You are reaching a degree in physics "Honoris Causa"  :)

Is that your way of telling me I finally got something right???
Yes.
Quote
LOL If so YAYYYYYYYYYY! LOL! Sorry I have gone in and corrected all the typos I made
Then, no degree in literature honoris causa. ;)
« Last Edit: 15/11/2007 18:35:48 by lightarrow »
 

Offline Karen W.

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Why Does Adding A Spoon Make This Coffee Cool Quicker ?
« Reply #10 on: 15/11/2007 18:48:23 »
HEE HEE HEE.. Have a great day Alberto!
 

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Why Does Adding A Spoon Make This Coffee Cool Quicker ?
« Reply #10 on: 15/11/2007 18:48:23 »

 

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