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??? for old

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Sid

12-30-2006 10:45:28




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About your reply to the cold post earlier. "You think thats cold you should go to the artic circle, now thats cold. BTDT yep been up that way once. I was in a sub and we where 150 feet under water and frost would form on the inside of the sub even at 150 feet under. We couldn't surface because it was solid ice above us but it sure was cold inside that sub I was told it was around -60-80 out side of the sub" What kind of anti-freeze is in those artic waters?

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MarkB_MI

12-30-2006 16:51:15




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 Re: ??? for old in reply to Sid, 12-30-2006 10:45:28  
The salt content lowers the freezing point of the ocean a bunch, but the main reason the oceans don't freeze at depth is that water has a very unique characteristic: Water is just about the only substance that expands when it freezes. If the oceans were filled with any liquid other than water, they would freeze from the bottom up. Because water has to expand to freeze, the pressure at depth prevents freezing.

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John T

12-30-2006 11:52:10




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 Re: ??? for old in reply to Sid, 12-30-2006 10:45:28  
As I posted before like I told my kids when they were in science class yearsssss s ago, theres NO SUCH THING AS COLD only the absence of heat, up in the sky theres the sun to provide heat but no ice cubes for cold lol

You werent cold, you just didnt haqve much heat

John T (with tongue in cheek n foot in mouth lol)



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IBorange in TX

12-30-2006 12:54:13




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 Re: ??? for old in reply to John T, 12-30-2006 11:52:10  
John T, explain about the HEAT OF FUSION between water at 32 degrees and ice at the same temp. I, too, told my students the same thing, NO Cold, just the absence of heat. Of course, there is the heat of vaporation, but that will fit here, now. Good Luck.....



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old

12-30-2006 12:20:56




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 Re: ??? for old in reply to John T, 12-30-2006 11:52:10  
Ok teacher explain how theres water that doesn't freeze but also a layer of ice in that area. I understand it but can you explain it. I know it has to do with the temp. of the water and the temp of the air and that because of the diffrance in the 2 that the water sort of steams and thats where the ice if formed from

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John T

12-30-2006 16:55:04




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 Re: ??? for old in reply to old, 12-30-2006 12:20:56  
Hey you rascals, I told ya above my answer was with "tongue in cheek" wayyyyy back when I was a pimpled Nerd in EE at Old Purdue Thermodynamics was my WORST subject and Im NOT smart enough to answer these questions, heres about alllll ll I do remember.

Heat lost = heat gained

I dont know beans about heat of fusion or that ice thing. I do know if you stick hot n cold water in the freezer the hot freezes first for some darn reason???? I do know when you step out of the shower the water evaporatign off your body makes you feel colddddd cuz of something about the heat of vaporization and how changing from the liquid drops to water vapor carries away heat off the body so you feel that cold??

Told ya Im NOT smart enough to answer this heat stuff lol ask me about electricity !!!!! !!

You guys take care now n Happy New year

Ol John T (NOT a thermodynamocs kinda guy)

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old

12-30-2006 17:08:52




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 Re: ??? for old in reply to John T, 12-30-2006 16:55:04  
Well I figure it works like my pond does in the winter. The warmer water of the pond makes steam, the steam goes up and then hits the colder air and freezes on tree libs etc. I figue it has to work the same way up north and thats way you have all that ice since salt water doesn't freeze but the steam wouldn't have salt in it so it freezes and then you get a lot of ice

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old

12-30-2006 10:51:50




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 Re: ??? for old in reply to Sid, 12-30-2006 10:45:28  
Thats an easy one SALT.



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CHris(WA)

12-30-2006 11:44:24




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 Re: ??? for old in reply to old, 12-30-2006 10:51:50  
I would imagine that pressure due to depth would be a factor as well as the salinity. I bet it was cold enough to frost Neptune's balls,Old!!



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old

12-30-2006 12:17:14




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 Re: ??? for old in reply to CHris(WA), 12-30-2006 11:44:24  
Well as I said there was frost on the inside of the sub. In places it was as much as a 1/4 inch thick.



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730virgil

12-30-2006 20:21:13




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 Re: ??? for old in reply to old, 12-30-2006 12:17:14  
that had to be miserable



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old

12-30-2006 21:31:22




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 Re: ??? for old in reply to 730virgil, 12-30-2006 20:21:13  
Yep it was. We had water dripping all over the place and we where also cold as H#ll. Mind you this is a nuke sub and even with that we couldn't keep warm. We where wearing coats in amd out of bed



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