- #1
Quantum Velocity
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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!
If it does loss heat and the how?
Thanks!
Radiation.Quantum Velocity said:If a body have heat and floating in space do it loss heat?
If it does loss heat and the how?
Thanks!
BL4CKB0X97 said:I don't think it does. Heat loss requires something for the energy to transfer too.
Face palmanorlunda 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.
We can't forget about light(EM radiation) and still answer your question.BL4CKB0X97 said:Face palm
Forgot about light
I didn't ask a question. I said I forgot about Em when I replied. Completely slipped my mind. Did you mean his question?russ_watters said:We can't forget about light(EM radiation) and still answer your question.
Sorry, misread forget for forgot and forgot who was who...BL4CKB0X97 said:I didn't ask a question. I said I forgot about Email when I replied. Completely slipped my mind. Did you mean his question?
No problem. My autocorrect changed Em to email. Just not my day, I think.russ_watters said:Sorry, misread forget for forgot and forgot who was who...
Hah, totally what I meant.anorlunda said: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.
Quantum Velocity said:But if there is no light around the object
Quantum Velocity said:But where the light come from
lets be really clear hereBL4CKB0X97 said: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.
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.
davenn said: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
Quantum Velocity said:But where the light come from
Drakkith said:Thermal radiation (which includes light if the object is hot enough) is emitted from any object warmer than absolute zero: https://en.wikipedia.org/wiki/Thermal_radiation
davenn said:great minds think alike
thanks for the backup
Heat moves in empty space through a process called radiation. This involves the transfer of thermal energy through electromagnetic waves, such as infrared radiation.
Hot matter in empty space loses heat because it radiates thermal energy in the form of electromagnetic waves. These waves carry thermal energy away from the hot matter, causing it to cool down.
The temperature of a substance directly affects the rate at which it cools down in empty space. The higher the temperature, the more thermal energy is radiated and the faster it will cool down. As the substance cools down, the rate of heat loss also decreases.
Larger objects take longer to cool down in empty space because they have a larger mass and therefore, more thermal energy to lose. It takes more time for the thermal energy to radiate away from the larger object compared to a smaller object with less thermal energy.
No, objects cannot cool down to absolute zero in empty space. This is because even in the emptiest regions of space, there is still some leftover radiation, known as the cosmic microwave background, which has a temperature of 2.7 Kelvin. This prevents objects from cooling down to absolute zero.