How stuff in empty space cools down?

  • #1
If a body have heat and floating in space do it loss heat?
If it does loss heat and the how?
Thanks!
 

Answers and Replies

  • #2
russ_watters
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If a body have heat and floating in space do it loss heat?
If it does loss heat and the how?
Thanks!
Radiation.
 
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  • #3
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I don't think it does. Heat loss requires something for the energy to transfer too.
 
  • #4
anorlunda
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I don't think it does. Heat loss requires something for the energy to transfer too.
The light radiation streaming out in all directions carries energy away as @russ_watters said. Where the light goes to is irrelevant to the body.
 
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  • #5
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The light radiation streaming out in all directions carries energy away as @russ_watters said. Where the light goes to is irrelevant to the body.
Face palm

Forgot about light
 
  • #6
russ_watters
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Face palm

Forgot about light
We can't forget about light(EM radiation) and still answer your question.
 
  • #7
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We can't forget about light(EM radiation) and still answer your question.
I didn't ask a question. I said I forgot about Em when I replied. Completely slipped my mind. Did you mean his question?
 
  • #8
anorlunda
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Actually there is one case where you can forget about light. Dark mattter.

Dark matter does not emit light. Dark matter near a galaxy does not cool down, nor does it transfer heat to regular matter.

But if the OP question is about ordinary matter rather than dark matter, the answer radiation stands.
 
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  • #9
russ_watters
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I didn't ask a question. I said I forgot about Email when I replied. Completely slipped my mind. Did you mean his question?
Sorry, misread forget for forgot and forgot who was who...
 
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  • #10
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Sorry, misread forget for forgot and forgot who was who...
No problem. My autocorrect changed Em to email. Just not my day, I think.
 
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  • #11
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Actually there is one case where you can forget about light. Dark mattter.

Dark matter does not emit light. Dark matter near a galaxy does not cool down, nor does it transfer heat to regular matter.

But if the OP question is about ordinary matter rather than dark matter, the answer radiation stands.
Hah, totally what I meant.

xD
 
  • #13
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But if there is no light around the object
The more energy something has, the more photons it releases. Like fire, which is effectively really hot air, so hot it is red. Hence Red Hot.
 
  • #14
davenn
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But where the light come from
The more energy something has, the more photons it releases. Like fire, which is effectively really hot air, so hot it is red. Hence Red Hot.

lets be really clear here
anorlunda said ....

The light radiation streaming out in all directions carries energy away as @russ_watters said. Where the light goes to is irrelevant to the body.
light radiation --- probably not the best choice of words as to the unwary that may mean specifically visible light
as @BL4CKB0X97 's response came back with

Everything above 0K emits infrared radiation ... you, me, everything, but we sure don't radiate heat as visible light
only when the object gets to a certain temperature will it start emitting visible light as well


D
 
  • #15
anorlunda
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light radiation --- probably not the best choice of words as to the unwary that may mean specifically visible light
as @BL4CKB0X97 's response came back with

Everything above 0K emits infrared radiation ... you, me, everything, but we sure don't radiate heat as visible light
only when the object gets to a certain temperature will it start emitting visible light as well
Right @davenn . My choice of words was poor if the word "body" in the OP is a human body. But when I read it, I thought of a star as the body in space. @russ_watters one word answer "radiation" turns out to be most eloquent answer. :woot:
 
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  • #18
Drakkith
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great minds think alike
thanks for the backup :smile:
I do what I can. :-p
 
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  • #19
Well thank all of you for helping me now i understand and found what im looking for.
Thank you verry much!!!
 
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