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#1
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Posted to alt.home.repair,sci.physics
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IIUC, when water (or anything else) freezes, it emits heat, quite a bit
of heat, and that slows the freezing of the adjacent water. Right? |
#2
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On Saturday, February 20, 2021 at 3:11:16 PM UTC-6, micky wrote:
IIUC, when water (or anything else) freezes, it emits heat, quite a bit of heat, and that slows the freezing of the adjacent water. Right? Ya know, there are some good college basketball games on this afternoon. West Virginia beat Texas right at the end after being down 15 or 20 points. Stanford is going to triple overtime with Washington State tied at 76. https://www.smithsonianmag.com/smart-news/new-experiment-shows-why-sometimes-hot-water-cools-faster-cold-water-180975543/ |
#3
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micky wrote
IIUC, when water (or anything else) freezes, it emits heat, quite a bit of heat, Yes. and that slows the freezing of the adjacent water. Not necessarily, particularly if the adjacent water is moving. Right? Only half right. |
#4
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On Saturday, February 20, 2021 at 4:11:16 PM UTC-5, micky wrote:
IIUC, when water (or anything else) freezes, it emits heat, quite a bit of heat, and that slows the freezing of the adjacent water. Right? What exactly constitutes adjacent water? If it's container of water put into a freezer it's all cooling down together, some areas will cool faster than others and freeze first. |
#5
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![]() "trader_4" wrote in message ... On Saturday, February 20, 2021 at 4:11:16 PM UTC-5, micky wrote: IIUC, when water (or anything else) freezes, it emits heat, quite a bit of heat, and that slows the freezing of the adjacent water. Right? What exactly constitutes adjacent water? If it's container of water put into a freezer it's all cooling down together, some areas will cool faster than others and freeze first. But the water that is adjacent to the water that does freeze first will get the latent heat of freezing if the water isnt well stirred. |
#6
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In alt.home.repair, on Sun, 21 Feb 2021 12:28:58 -0800 (PST), trader_4
wrote: On Saturday, February 20, 2021 at 4:11:16 PM UTC-5, micky wrote: IIUC, when water (or anything else) freezes, it emits heat, quite a bit of heat, and that slows the freezing of the adjacent water. Right? What exactly constitutes adjacent water? I guess it depends on its mailing address. If one drop is at 3302 Water Drive and the other drop is at 3304, it's adjacent. If it's container of water put into a freezer it's all cooling down together, some areas will cool faster than others and freeze first. And what do you think happens when part freezes first? The part that freezes emits heat, enough heat to significantly warm the water next door and slow down its freezing. Even if the water is moving, there is always some water next door, unless of course the landlord hasn't been able to rent the property. |
#7
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On Sunday, February 21, 2021 at 6:01:42 PM UTC-6, micky wrote:
In alt.home.repair, on Sun, 21 Feb 2021 12:28:58 -0800 (PST), trader_4 wrote: On Saturday, February 20, 2021 at 4:11:16 PM UTC-5, micky wrote: IIUC, when water (or anything else) freezes, it emits heat, quite a bit of heat, and that slows the freezing of the adjacent water. Right? What exactly constitutes adjacent water? I guess it depends on its mailing address. If one drop is at 3302 Water Drive and the other drop is at 3304, it's adjacent. If it's container of water put into a freezer it's all cooling down together, some areas will cool faster than others and freeze first. And what do you think happens when part freezes first? The part that freezes emits heat, enough heat to significantly warm the water next door and slow down its freezing. Even if the water is moving, there is always some water next door, unless of course the landlord hasn't been able to rent the property. I was thinking along the lines of sewage lagoons for livestock operations. We just as well live in different worlds sometimes. |
#8
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On 2/21/2021 4:01 PM, micky wrote:
In alt.home.repair, on Sun, 21 Feb 2021 12:28:58 -0800 (PST), trader_4 wrote: On Saturday, February 20, 2021 at 4:11:16 PM UTC-5, micky wrote: IIUC, when water (or anything else) freezes, it emits heat, quite a bit of heat, and that slows the freezing of the adjacent water. Right? What exactly constitutes adjacent water? I guess it depends on its mailing address. If one drop is at 3302 Water Drive and the other drop is at 3304, it's adjacent. If it's container of water put into a freezer it's all cooling down together, some areas will cool faster than others and freeze first. And what do you think happens when part freezes first? The part that freezes emits heat, enough heat to significantly warm the water next door and slow down its freezing. Even if the water is moving, there is always some water next door, unless of course the landlord hasn't been able to rent the property. The heat released does not heat the nearby water. The nearby water passes it's heat to the colder water, which passes it to the colder surface that is cooling it. The frozen layer passes more heat through from the water after it freezes because it's temperature drops, since it does not have as much energy left to pass to the colder surface. |
#9
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![]() "Bob F" wrote in message ... On 2/21/2021 4:01 PM, micky wrote: In alt.home.repair, on Sun, 21 Feb 2021 12:28:58 -0800 (PST), trader_4 wrote: On Saturday, February 20, 2021 at 4:11:16 PM UTC-5, micky wrote: IIUC, when water (or anything else) freezes, it emits heat, quite a bit of heat, and that slows the freezing of the adjacent water. Right? What exactly constitutes adjacent water? I guess it depends on its mailing address. If one drop is at 3302 Water Drive and the other drop is at 3304, it's adjacent. If it's container of water put into a freezer it's all cooling down together, some areas will cool faster than others and freeze first. And what do you think happens when part freezes first? The part that freezes emits heat, enough heat to significantly warm the water next door and slow down its freezing. Even if the water is moving, there is always some water next door, unless of course the landlord hasn't been able to rent the property. The heat released does not heat the nearby water. There is nowhere else for the heat to go. The nearby water passes it's heat to the colder water, which passes it to the colder surface that is cooling it. The frozen layer passes more heat through from the water after it freezes because it's temperature drops, since it does not have as much energy left to pass to the colder surface. Utterly mangled all over again. |
#10
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On Sunday, February 21, 2021 at 11:03:16 PM UTC-5, Bob F wrote:
On 2/21/2021 4:01 PM, micky wrote: In alt.home.repair, on Sun, 21 Feb 2021 12:28:58 -0800 (PST), trader_4 wrote: On Saturday, February 20, 2021 at 4:11:16 PM UTC-5, micky wrote: IIUC, when water (or anything else) freezes, it emits heat, quite a bit of heat, and that slows the freezing of the adjacent water. Right? What exactly constitutes adjacent water? I guess it depends on its mailing address. If one drop is at 3302 Water Drive and the other drop is at 3304, it's adjacent. If it's container of water put into a freezer it's all cooling down together, some areas will cool faster than others and freeze first. And what do you think happens when part freezes first? The part that freezes emits heat, enough heat to significantly warm the water next door and slow down its freezing. Even if the water is moving, there is always some water next door, unless of course the landlord hasn't been able to rent the property. The heat released does not heat the nearby water. The nearby water passes it's heat to the colder water, which passes it to the colder surface that is cooling it. The frozen layer passes more heat through from the water after it freezes because it's temperature drops, since it does not have as much energy left to pass to the colder surface. +1 That's why I asked for clarification on what Micky was talking about, with "adjacent water" but got a typical response. If we sit a plastic jug of water on top of a cold refrigeration plate, the bottom of the jug will freeze first, but it's not heating the water above it. |
#11
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![]() On Sun, 21 Feb 2021 19:01:35 -0500, micky posted for all of us to digest... In alt.home.repair, on Sun, 21 Feb 2021 12:28:58 -0800 (PST), trader_4 wrote: On Saturday, February 20, 2021 at 4:11:16 PM UTC-5, micky wrote: IIUC, when water (or anything else) freezes, it emits heat, quite a bit of heat, and that slows the freezing of the adjacent water. Right? What exactly constitutes adjacent water? I guess it depends on its mailing address. If one drop is at 3302 Water Drive and the other drop is at 3304, it's adjacent. If it's container of water put into a freezer it's all cooling down together, some areas will cool faster than others and freeze first. And what do you think happens when part freezes first? The part that freezes emits heat, enough heat to significantly warm the water next door and slow down its freezing. Even if the water is moving, there is always some water next door, unless of course the landlord hasn't been able to rent the property. Is this what you are referring to? Otherwise known as heat of sublimation? https://en.wikipedia.org/wiki/Enthalpy_of_sublimation -- Tekkie |
#12
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micky wrote:
IIUC, when water (or anything else) freezes, it emits heat, quite a bit of heat, and that slows the freezing of the adjacent water. Right? No, you have it backwards. Freezing (i.ee. thermal solidification) is the *consequence* of removing a sufficient amount of heat from a thermodynamic system. If you consider each unit volume of the substance as a thermodynamic system of its own, removing heat from one of those volumes can mean that it goes into the other instead of into the rest of the environment, preventing the other from freezing, or causing its freezing process to slow down. See also: BBC (1983): €śFUN TO IMAGINE€ť (with Richard Feynman) https://www.youtube.com/watch?v=nYg6jzotiAc PointedEars -- €śScience is empirical: knowing the answer means nothing; testing your knowledge means everything.€ť €”Dr. Lawrence M. Krauss, theoretical physicist, in €śA Universe from Nothing€ť (2009) |
#13
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micky wrote:
IIUC, when water (or anything else) freezes, it emits heat, quite a bit of heat, and that slows the freezing of the adjacent water. Right? No, you have it backwards. Freezing (i.e. thermal solidification) is the *consequence* of removing a sufficient amount of heat from a thermodynamic system. If you consider each unit volume of the substance as a thermodynamic system of its own, removing heat from one of those volumes can mean that it goes into the other instead of into the rest of the environment, preventing the other from freezing, or causing its freezing process to slow down. See also: BBC (1983): €śFUN TO IMAGINE€ť (with Richard Feynman) https://www.youtube.com/watch?v=nYg6jzotiAc PointedEars -- €śScience is empirical: knowing the answer means nothing; testing your knowledge means everything.€ť €”Dr. Lawrence M. Krauss, theoretical physicist, in €śA Universe from Nothing€ť (2009) |
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