Why Does Adding A Spoon Make This Coffee Cool Quicker ?

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Offline neilep

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Dear Coffee Luffers,

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

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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 !!
Men are the same as women, just inside out !

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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. »

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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"  [:)]

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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.
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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

"Life is not measured by the number of Breaths we take, but by the moments that take our breath away."

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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 !!
Men are the same as women, just inside out !

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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!

"Life is not measured by the number of Breaths we take, but by the moments that take our breath away."

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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).
"It has been said that the primary function of schools is to impart enough facts to make children stop asking questions. Some, with whom the schools do not succeed, become scientists." - Schmidt-Nielsen "Memoirs of a curious scientist"

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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.

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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 »

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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!

"Life is not measured by the number of Breaths we take, but by the moments that take our breath away."