wind chill factor

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randoskier
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Re: wind chill factor

Post by randoskier » Wed Feb 08, 2023 6:10 pm


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Krummholz
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Re: wind chill factor

Post by Krummholz » Wed Feb 08, 2023 7:18 pm

From SA: Your nerve endings and brain perceive the rapid drop in skin temperature as extreme, however. Scientists are not sure why this occurs, but they think it is a signal to close down blood vessels in the skin and extremities so more blood can flow to the body’s core, to keep your organs warm and keep you alive—even if you lose a finger or toe to frostbite in the process. Wind chill is all about perception, and the wind chill index is an attempt to gauge that perception.


What is the perception of losing a finger or toe? OK a toe would probably not be lost to wind chil or even a finger. But I did meet Captain Spongefoot who was missing the end of his nose, earlobes, ends of fingers, and his lower legs, his feet were made of wood so they wouldn’t feel cold.
Ok! So it was FKN cold and he was on a high mountain in a winter storm and got in trouble. What about evaporative cooling?

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bauerb
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Re: wind chill factor

Post by bauerb » Wed Feb 08, 2023 7:26 pm

so if windchill is no big deal, why do astronauts wear those big suits? when they go outside the space ship they are traveling at 50,000 miles per hour...and thats a lot of windchill! even more that Mt Washington last week.



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Re: wind chill factor

Post by mca80 » Wed Feb 08, 2023 7:32 pm

bauerb wrote:
Wed Feb 08, 2023 7:26 pm
so if windchill is no big deal, why do astronauts wear those big suits? when they go outside the space ship they are traveling at 50,000 miles per hour...and thats a lot of windchill! even more that Mt Washington last week.
I think it's just a fashion statement.



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Re: wind chill factor

Post by Stephen » Wed Feb 08, 2023 11:59 pm

Wind chill makes cable bindings more “active” which puts more pressure on the tip of the ski because the wind chill shrinks all the binding components, making the binding tighter, so this changes the physics of the whole thing.

Wind chill, cable bindings, physics, tip pressure.
Can we beat the 51 page record with any of this?
:twisted:

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bauerb
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Re: wind chill factor

Post by bauerb » Thu Feb 09, 2023 11:28 am

its my understanding that Asnes products are impervious to temperatures of any type, and therefore Asnes is the only brand of anything that anyone should be using.



mca80
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Re: wind chill factor

Post by mca80 » Thu Feb 09, 2023 2:34 pm

bauerb wrote:
Thu Feb 09, 2023 11:28 am
its my understanding that Asnes products are impervious to temperatures of any type, and therefore Asnes is the only brand of anything that anyone should be using.
Do they make fully breatheable, ultralight, yet water- and windproof shirts?



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bauerb
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Re: wind chill factor

Post by bauerb » Thu Feb 09, 2023 5:12 pm

you are either a believer or you're not.



mca80
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Re: wind chill factor

Post by mca80 » Thu Feb 09, 2023 5:40 pm

Regarding this whole discussion... some examples to consider:

A "drafty" house makes you feel a lot colder.

Creation of steam in a sauna makes you feel a lot hottwr (granted this is steam, but the idea of increased humidity still applies--add minimal amounts of water to the rocks to just increase humidity but not allow enough steam to gather and condense on your skin, same principle).

The ambient temp may be the same but the increase of, on the one hand, wind in cold temps, and, on the other, humidity in warm temps, has a marked affect.



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bauerb
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Re: wind chill factor

Post by bauerb » Thu Feb 09, 2023 7:50 pm

yeah, but does Asnes make steam saunas ?



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