What annoys you?

Britton30 said:

A chill factor of -65F, not uncommon here.

Very very simply sweat is warmed by the body / blood passing very close to the sweat glands and is carried to the surface of the body where the heat contained in the sweat is taken away.

Now at no wind conditions this would be just an "ambient" loss but given the increased passage of air across the skin surface more sweat is evaporated and the heat contained in it dissipated to the surrounding air.

If one could analogise that just think of the CPU heatsink if there were not a fan blowing air across the fins the the heatsink would cool much more slowly than when the air is flowing at a high rate across the fins. because the air current acros the fins "picks up" the heat and carries it away.

Air is more readily heated than harder or more dense materials because the lower number of atoms that are "agitated" because of that lower density.
To go to a ridiculously extreme and unlikely example if lead could be poured across the skin the high density of it would take some time to absorb any radiated heat. But I stand to be corrected.

ICit2lol said:

Britton30 said:

A chill factor of -65F, not uncommon here.

ICit2lol said:

Very very simply sweat is warmed by the body / blood passing very close to the sweat glands and is carried to the surface of the body where the heat contained in the sweat is taken away.

Now at no wind conditions this would be just an "ambient" loss but given the increased passage of air across the skin surface more sweat is evaporated and the heat contained in it dissipated to the surrounding air.

If one could analogise that just think of the CPU heatsink if there were not a fan blowing air across the fins the the heatsink would cool much more slowly than when the air is flowing at a high rate across the fins. because the air current across the fins "picks up" the heat and carries it away.

Air is more readily heated than harder or more dense materials because the lower number of atoms that are "agitated" because of that lower density.
To go to a ridiculously extreme and unlikely example if lead could be poured across the skin the high density of it would take some time to absorb any radiated heat. But I stand to be corrected.

It annoys me to have hot lead poured across my skin!

Oh, oh.. and there are guys that do that...with lead (they pre dip their hands in water, really thin layer, and do several dips into orange molten lead and even copper! I swearz it!

But to enter into your geekdom: you forgot to mention, the evaporation of sweat, or water/saline phase change from liquid to gas is exothermic, gives off heat - because it needs to exert so much energy (a.k.a. heat) to overcome the stronger bonds of the liquid phase molecules which are held tightly together, compared to vapor/gas phase loosely bonded phase. thought that might be better than "taken away"

BTW: ICit2lol, an analogy within an anology... nice touch! No idea how this is relevant, but I'm tired, and maybe when I get my 2 hrs sleep and wake up for work, there will be someone making fun of me by then!

Okay...back to your thread now....
Mike

Hopalong X said:

rubyrubyroo said:

BTW: ICit2lol, an analogy within an anology... nice touch! No idea how this is relevant, but I'm tired, and maybe when I get my 2 hrs sleep and wake up for work, there will be someone making fun of me by then!

Okay...back to your thread now....
Mike

I'll try to think of something appropriate by then.

Topper

Gettin' slow on the draw there are we? Or is it the whole X-mas spirit making ya' all warm inside!

Mike

That's mildly better, and I appreciate the effort!

(also is that a zebra without pajamas on? not speaking to anyone specific! )

Mike