Why does moving air feel cold?
- Thread starter aphex
- Start date
Because when things move, it causes friction, thus reducing temperature. Friction causes the cold.
It doesen't....
It will depend on many things. If the air is warmer than the surface temperature of your skin, and humid enough so that it doesen't evaporate your sweat, it will feel warm.
That's probably the answer to your question; sweat.
It will depend on many things. If the air is warmer than the surface temperature of your skin, and humid enough so that it doesen't evaporate your sweat, it will feel warm.
That's probably the answer to your question; sweat.
wind pushed the heat near your body away. also, when wind passes over moisture, it evaporates, taking the energy/heat near your skin (wind chill).
If if is a dry, hot wind, it will potentially feel cooler because it will evaporate your sweat more rapidly.
Just think Wind Chill and Heat Index.
HardcoreRobot
Lifer
- Nov 7, 2000
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I'm trying to get to the bottom of the OP's question.
He's obviously talking about specific circumstances in which he thought the air was warm, but it felt cool.
It just depends on too many things, one of the most important being the state of your internal thermometer.(ie: one person can feel cool and one person can feel hot in the same room).
I've felt plenty of hot, dry winds. That's why I said "potentially" feel cooler.
I've felt 100 degree breezes, and they aren't exactly soothing.
This is a good point, except that a blow dryer gets much hotter than the outside air temperature ever will.
It will always feel hot, because the air's temperature is always well above that of your skin's.Need more info OP. What were the circumstances that caused you to ask the question?
The most likely answer is your sweat though.
scorpmatt
Diamond Member
- Feb 8, 2001
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Originally posted by: Eli
This is a good point, except that a blow dryer gets much hotter than the outside air temperature ever will.
Need more info OP. What were the circumstances that caused you to ask the question?
The most likely answer is your sweat though.
threads, meet
wind causes moisture (sweat molecules) to evaporate. the change from liquid to gas takes energy, most of which comes from the heat on your skin.
heat transfer.
The air around you is being heated by you and vice versa. If air that is not around you is moved to around you, it starts balancing out the heat. If air that was once around you is moved away, the heat it took from you is no longer present.
Of course, I did, in fact, just pull that out of my ass, but it may be right.
The air around you is being heated by you and vice versa. If air that is not around you is moved to around you, it starts balancing out the heat. If air that was once around you is moved away, the heat it took from you is no longer present.
Of course, I did, in fact, just pull that out of my ass, but it may be right.
Ah, the power of evaporative cooling.
Sweat. Got any rubbing alcohol? Soak your hair in that and then go sit infront of the fan.
HardcoreRobot
Lifer
- Nov 7, 2000
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in a related note, if you are trying to cool yourself off by blowing air on yourself, make your mouth as narrow as possible. forcing the air through a smaller hole takes the heat out of the air. you can try it on your hand, if your mouth is open wide it is hot and sticky
also, i love this quote "friction causes the cold" hahahahahahahaha
also, i love this quote "friction causes the cold" hahahahahahahaha
HardcoreRobot
Lifer
- Nov 7, 2000
- 16,403
- 3
- 81
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