• "Icy Hell" - New Hampshire Can Reach -100°F tonight via Wind Chill.
    108 replies, posted
[QUOTE=paindoc;53029579]You're still missing some fairly basic points of thermodynamics, though. Even if the actual model is complex, I fail to understand why you continue to argue when the concept is so simple: your skin is a heat source. Wind acts like a fan on a CPU cooler, accelerating the rate of energy transfer between your skin (a heat source) and the air. Granted, it gets more complex when you include the lowered specific heat (and thus reduced heat "capacity") of cold dry air. But that doesn't make wind chill any less real. Have you ever actually been out in 14F temperatures? Better have a damn nice jacket because that's about when it's cold enough that your face just hurts going outside. In North Dakota I got to experience -20 and at that point it just hurts to [I]breathe[/I]. Looking back, it seems you have experienced cold temepratures but the way you approach it makes it seem like you're continuing this for the sake of dickwaving, I.E. "that's not real cold, up here in bumfuck nowhere it gets down to..."[/QUOTE] If you think thermodynamics is simple, there's your problem; it's almost always stated in an incredibly misleading way and rarely explained properly. In case of a CPU cooler, you're (ideally) not performing any work, only transfering energy between a solid and a fluid (meaning entropy is constant). So you're only dealing with heat conduction and fluid mechanics, and you don't need thermodynamics for those in this case (other than the ideal gas law). Point being that thermodynamics is (in practice) mainly about heat performing mechanical work. It's got about as much to do with this situation as it does to tuning your car. And well, yes I have? I wrote that just after coming indoors, though it's apparently 21F out right now. I don't even live in bumfuck, nowhere, it's a big university city - not exactly interesting.
NH resident here, its been pretty bitter around 5 to -10 all week. Excited for today though, winter up here is gorgeous and bitter subzero days are exciting. I heard its gonna be about -25 in my area
[QUOTE=Tobba;53029514]My point is that it's a question of heat transfer, extremely complicated heat transfer. That has relatively little to do with thermodynamics, and the temperature they assign doesn't even make sense therrmodynamically.[/QUOTE] Wind chill is calculated using an empirically determined equation and it works for its intended purpose. It has everything to do with thermodynamics; it's literally in the name: the dynamics of heat.
[QUOTE=Headhumpy;53029682]Wind chill is calculated using an empirically determined equation and it works for its intended purpose. It has everything to do with thermodynamics; it's literally in the name: the dynamics of heat.[/QUOTE] Are you implying Tobba, some random internet dweller, [I]doesn't[/I] know better than trained scientists??? Nah, it's definitely the scientists that are wrong and not Tobba as has been repeatedly explained at length. Edit: to elaborate though, Tobba, as Gmod4ever explained wind chill is an objective measurement of perceived temperature on exposed skin at a specific elevation. Thus all your arguments are completely off-base so quit digging your heels in already. You're only making yourself look worse.
I live too far south for it to be this bad, but goddamn, the wind was fucking brutal today. Roads were a bitch as well.
[QUOTE=gufu;53029701]I live too far south for it to be this bad, but goddamn, the wind was fucking brutal today. Roads were a bitch as well.[/QUOTE] I was heading towards manchester around noon and i was getting bullied by the wind HARD on 93. Be safe out there today my guy
[QUOTE=Alice3173;53029697]Are you implying Tobba, some random internet dweller, [I]doesn't[/I] know better than trained scientists??? Nah, it's definitely the scientists that are wrong and not Tobba as has been repeatedly explained at length. Edit: to elaborate though, Tobba, as Gmod4ever explained wind chill is an objective measurement of perceived temperature on exposed skin at a specific elevation. Thus all your arguments are completely off-base so quit digging your heels in already. You're only making yourself look worse.[/QUOTE] Tobba would be right if human beings had completely dry skin and were cold-blooded. Unfortunately we are warm-blooded and thus constantly lose heat to the environment. Not to mention we have moisture on our skin that takes away heat when it evaporates; it's what allows us to survive even when the air is hotter than our internal body temperature.
[QUOTE=kingstead;53029154]What? No they're not. :v: There's a HUGE difference when it's dead still 0 degrees outside and then when the wind is whipping all the snow and cold air. It can make it feel like its -20 degrees depending on how fast the wind is going. Tonight in Minnesota where I live it's -7 degrees right now, but that's because there's no wind whipping right now. If there was I wouldn't have even gone out tonight to get snacks.[/QUOTE] I'm just excited for the 30F heat wave we're supposed to get in the Twin Cities this coming week. I was out shooting last Friday in -2F temps and I couldn't have my gloves off for more than 2-3 minutes before the cold became painful. Thank jebus I didn't decide to go the following day with -15F temps and -25-30 wind-chill. I know we had -75F wind-chill in Northern Minnesota not too long ago, fuck that yo.
[QUOTE=Sims_doc;53029455]Belly slide anyone?[/QUOTE] I believe your skin would instantly stick(like a tongue on a pole) and either you will be stuck there or peel off a nice layer of skin before getting stuck again. Literally a frozen fly trap.
Meanwhile here in Australia we are on the other end of the spectrum with 42°C heatwaves Stay hydrated nerds, heatstroke sucks
[quote]...the temperature here in the high peaks of New Hampshire’s White Mountains was forecast to drop to 40 degrees below zero overnight Friday. The wind chill could make the air feel as cold as 100 below zero.[/quote] Ah, so not actually -100 F
[QUOTE=gman003-main;53029142]It was -10C this morning, I was shivering even in two layers of coats and a pair of gloves. For -40C (plus 100kmh winds), you absolutely need cold-weather gear to survive going outdoors. NH natives will probably have that, but I would not be surprised if some idiot tourist is going to freeze to death.[/QUOTE] two coats and freezing at -10C? you might need to buy a single real coat
[QUOTE=Zezibesh;53029930]two coats and freezing at -10C? you might need to buy a single real coat[/QUOTE] Coats dont do much if you dont have proper leg-wear Also finally, been too darn hot around here..
[QUOTE=Tobba;53029143]-100°F is ~5°C hotter than dry ice, and ammonia would be liquid at that temperature. The -100°F number is bullshit though, it's going to be -48°F; there isn't such a thing as "feeling like -100°F" because that's neither how temperature works nor survivable.[/QUOTE] That's weird because theres a literal formula for calculating wind chill temps
[QUOTE=Zezibesh;53029930]two coats and freezing at -10C? you might need to buy a single real coat[/QUOTE] I don't think the problem was the coats - I attribute it to the lack of winter legwear and a pretty poor set of gloves. Fortunately, all I was doing was sitting in my car as it warmed up - once the heater kicked in, things were fine. Either way, it underlines my point about needing proper equipment for low temperatures. I'd probably replace the coats anyways if I found myself needing to be outside in subzero temperatures for extended periods.
What the hell that is anything but normal.
[QUOTE=Renderman;53029086]I cannot even begin to imagine how that feels.[/QUOTE] I'd say it probably won't feel like anything after a short amount of time. First you'd be warm from the inside and then in about 3 seconds that all gets drained right out of you as you suffer from the shock of a drastic temperature change. Frostbite would set in within about a minute on anything exposed and then you'd be stiff and numb
[QUOTE=gman003-main;53030249]I don't think the problem was the coats - I attribute it to the lack of winter legwear and a pretty poor set of gloves. Fortunately, all I was doing was sitting in my car as it warmed up - once the heater kicked in, things were fine. Either way, it underlines my point about needing proper equipment for low temperatures. I'd probably replace the coats anyways if I found myself needing to be outside in subzero temperatures for extended periods.[/QUOTE] Legwear is exactly the key. All my friends have been bitching about the cold lately so i put them onto a tactical upgrade, wear PJ pants under your normal pants. Honestly makes more of a difference than any other piece of winter wear
[QUOTE=The golden;53029146]Wind chill measurements are bogus bullshit [/QUOTE] no. allow me to explain. when the air is cold but still, body heat radiates off your body and heats up the air around it. this creates a sort of "bubble" of warmth around you, air is a really good insulator (thats why the warmest jackets tend to be poofy, they have a lot of air trapped inside). The big point is that this slows heat loss. but, if the air is moving, in this case due to wind, whatever bubble of warmth you form gets stripped away immediately, and faster if the wind is fast. this means that there is nothing slowing heat loss from your body, and your core temperature plummets faster, as if it would be if the air itself were still but colder (hence wind shear measurements). so yes, technically air temperature is the same with wind shear, but the rate at which your body looses heat is not.
[QUOTE=Dadman;53029429]and yet, we press on. Man is a notoriously stubborn motherfucker, we'll power through this.[/QUOTE] the homeless won't usually churches, shelters, and public service departments open up for them but there's only so many they can take in. Another problem is making the homeless aware that shelters exist.
I live in Alaska and it’s not even [I]that[/I]cold here
that's as cold as a day in the martian winter...
[QUOTE=No Party Hats;53030296]Legwear is exactly the key. All my friends have been bitching about the cold lately so i put them onto a tactical upgrade, wear PJ pants under your normal pants. Honestly makes more of a difference than any other piece of winter wear[/QUOTE] The worst part is getting it so your PJ pant legs don't ride up too high when putting your jeans over them. Such a pain in the ass pulling them down.
I live in Indiana and a severe winter for us can reach -20, more with wind chill and even that's brutal, freezes my breaths moisture to my moustache, I can't imagine -100.
[QUOTE=No Party Hats;53030296]Legwear is exactly the key. All my friends have been bitching about the cold lately so i put them onto a tactical upgrade, wear PJ pants under your normal pants. Honestly makes more of a difference than any other piece of winter wear[/QUOTE] Invest in thermal underwear, you'll thank me later.
[QUOTE=TectoImprov;53030663]The worst part is getting it so your PJ pant legs don't ride up too high when putting your jeans over them. Such a pain in the ass pulling them down.[/QUOTE] that's why you wear tights
[QUOTE=TheBorealis;53029107]Easy F/C conversion. For F to C, take 32 from the F and multiply by 5/9 For C to F, multiply by 9/5 and add 32 to the result[/QUOTE] Easy? Who do you think I am? Albert Einstein?
[QUOTE=No Party Hats;53030296]Legwear is exactly the key. All my friends have been bitching about the cold lately so i put them onto a tactical upgrade, wear PJ pants under your normal pants. Honestly makes more of a difference than any other piece of winter wear[/QUOTE] can confirm, this is how I survive every canadian winter [editline]6th January 2018[/editline] [QUOTE=TectoImprov;53030663]The worst part is getting it so your PJ pant legs don't ride up too high when putting your jeans over them. Such a pain in the ass pulling them down.[/QUOTE] you have to put your pj pants on and tuck them into your socks, that way they won't ride up when you put your other pants on once you have both layers on you can just untuck the PJs from your socks if you feel like it. doubling up on socks is a good tip too
[QUOTE=The golden;53029146]Wind chill measurements are bogus bullshit unfortunately but that's still pretty damn cold.[/QUOTE] You've never lived anywhere cold, have you? [editline]6th January 2018[/editline] The difference between -45 below, and -45 below with windchill is fucking astonishing. Nobody would bitch about the cold here in ND if we didn't get such brutal winds. [editline]6th January 2018[/editline] [QUOTE=TectoImprov;53030663]The worst part is getting it so your PJ pant legs don't ride up too high when putting your jeans over them. Such a pain in the ass pulling them down.[/QUOTE] Buy a set of long johns. You can buy severe cold weather ones from an army surplus store for cheap.
[QUOTE=Cyke Lon bee;53030899]You've never lived anywhere cold, have you?[/QUOTE] Weird thing is The Golden is Canadian pretty sure, not sure how they don't know what windchill feels like :thinking:
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