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Blanket does not warm an object underneath it. So why would air warm surface?


Blanket does not warm an object underneath it. So why would air warm surface?23-05-2019 04:10
Tai Hai Chen
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(1061)
If you put a cup on the ground with no blanket on it. If you put another cup on the ground with blanket on it. Both cups will end up with the same temperature. So blanket does not change temperature of cup. So why would air change temperature of cup?
24-05-2019 01:56
James___
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(1468)
Tai Hai Chen wrote:
If you put a cup on the ground with no blanket on it. If you put another cup on the ground with blanket on it. Both cups will end up with the same temperature. So blanket does not change temperature of cup. So why would air change temperature of cup?




Both cups wouldn't be the same temperature. The blanket is a barrier/insulation. It's R rating would need to be considered. Same thing as any home a person lives in.
24-05-2019 03:45
Into the Night
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(9226)
James___ wrote:
Tai Hai Chen wrote:
If you put a cup on the ground with no blanket on it. If you put another cup on the ground with blanket on it. Both cups will end up with the same temperature. So blanket does not change temperature of cup. So why would air change temperature of cup?




Both cups wouldn't be the same temperature. The blanket is a barrier/insulation. It's R rating would need to be considered. Same thing as any home a person lives in.


They will both reach the same temperature, James. Blankets are not a source of energy. R rating is irrelevant.


The Parrot Killer
Edited on 24-05-2019 03:47
24-05-2019 04:36
James___
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(1468)
Into the Night wrote:
James___ wrote:
Tai Hai Chen wrote:
If you put a cup on the ground with no blanket on it. If you put another cup on the ground with blanket on it. Both cups will end up with the same temperature. So blanket does not change temperature of cup. So why would air change temperature of cup?




Both cups wouldn't be the same temperature. The blanket is a barrier/insulation. It's R rating would need to be considered. Same thing as any home a person lives in.


They will both reach the same temperature, James. Blankets are not a source of energy. R rating is irrelevant.



You seem to have forgotten that the Sun both rises and sets. The question really had no value. R rating is relevant. It would slow both heating and cooling. A thermal blanket would significantly restrict something underneath it to warm or slow it's ability to cool.
24-05-2019 18:38
Into the Night
★★★★★
(9226)
James___ wrote:
Into the Night wrote:
James___ wrote:
Tai Hai Chen wrote:
If you put a cup on the ground with no blanket on it. If you put another cup on the ground with blanket on it. Both cups will end up with the same temperature. So blanket does not change temperature of cup. So why would air change temperature of cup?




Both cups wouldn't be the same temperature. The blanket is a barrier/insulation. It's R rating would need to be considered. Same thing as any home a person lives in.


They will both reach the same temperature, James. Blankets are not a source of energy. R rating is irrelevant.



You seem to have forgotten that the Sun both rises and sets. The question really had no value. R rating is relevant. It would slow both heating and cooling. A thermal blanket would significantly restrict something underneath it to warm or slow it's ability to cool.

A constant temperature was assumed. Both cups will reach the same temperature. You also seem to forget that blankets have a low R value.


The Parrot Killer
24-05-2019 19:44
IBdaMann
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(4611)
James___ wrote: Both cups wouldn't be the same temperature. The blanket is a barrier/insulation. It's R rating would need to be considered. Same thing as any home a person lives in.

James, the important question is ... if you wrap a cup of coffee in a blanket, when does the coffee's temperature increase? When do you get "Coffee Warming"?

The follow-on question becomes: How is the "Coffee Warming" accelerated if CO2 is added?


Global Warming: The preferred religion of the scientifically illiterate.

Ceist - I couldn't agree with you more. But when money and religion are involved, and there are people who value them above all else, then the lies begin. - trafn

You are completely misunderstanding their use of the word "accumulation"! - Climate Scientist.

The Stefan-Boltzman equation doesn't come up with the correct temperature if greenhouse gases are not considered - Hank

:*sigh* Not the "raw data" crap. - Leafsdude

IB STILL hasn't explained what Planck's Law means. Just more hand waving that it applies to everything and more asserting that the greenhouse effect 'violates' it.- Ceist




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