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Posted: 1/2/2012 1:45:11 PM EDT
[#1]
Your friend doesnt understand physics.
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Posted: 1/2/2012 1:46:11 PM EDT
[#2]
Just pee in the pool to warm it up.
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Posted: 1/2/2012 1:46:56 PM EDT
[#3]
Your friend is stoopid
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Posted: 1/2/2012 1:47:23 PM EDT
[#4]
Paint one half black and the other half white and see which end is warmer.
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Posted: 1/2/2012 1:49:27 PM EDT
[#5]
Quoted:
Paint one half black and the other half white and see which end is warmer. If you do that, you will have two different densities of the water, which won't combine similar to water and oil. |
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Posted: 1/2/2012 1:49:38 PM EDT
[#6]
Quoted:
Paint one half black and the other half white and see which end is warmer. The end chupacabras peed in |
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Posted: 1/2/2012 1:51:29 PM EDT
[#7]
Quoted:
Your friend doesnt understand physics. |
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Posted: 1/2/2012 1:56:17 PM EDT
[#8]
Very interesting question. I don't know your answer. I'm curious about the topic as well.
When I was a kid my Dad decided to paint our house black to save money on heating bills. He was... eccentric. Being the enthusiastic-at-the-start-of-a-project kind of a guy, he only painted half. Or maybe he meant to only paint the east and west sides of the house. Of course he never felt the need to explain his idea to us kids.The end result was the same: A half black, half white house. People used our house to give directions to others in the area for years. ("Okay, you go straight, past the segregated house, then...") Did it save him money on heating bills? He never mentioned whether it did or not. |
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Posted: 1/2/2012 1:57:19 PM EDT
[#9]
Quoted:
Very interesting question. I don't know your answer. I'm curious about the topic as well. When I was a kid my Dad decided to paint our house black to save money on heating bills. Being the enthusiastic at the start of a project kind of a guy, he only painted half. Or maybe he meant to only paint the east and west sides of the house. Of course he never felt the need to explain his idea to us kids.The end result was the same: A half black, half white house. People used our house to give directions to others in the area for years. ("Okay, you go straight, past the segregated house, then...") Did it save him money on heating bills? He never mentioned whether it did or not. 
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Posted: 1/2/2012 1:57:48 PM EDT
[#10]
Quoted:
Paint one half black and the other half white and see which end is warmer. Yes, segregate your pool. 
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Posted: 1/2/2012 1:59:19 PM EDT
[#11]
he's probably thinking about a reflector for a campfire, and applying the concept laterally––radiant energy would heat the water on the way in, and also on the way out after being reflected from the bottom of the pool. but i'm pretty sure this would be dwarfed by effect of the black WRT heating the pool enclosure, and therefore the water. think albedo.
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Posted: 1/2/2012 1:59:30 PM EDT
[#12]
Tell your friend to go back to school and take a basic physics class. Tell him to pay attention when the instructor gets to the parts about light and colors, absorption, reflection, and basic thermodynamics.
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Posted: 1/2/2012 2:00:16 PM EDT
[#13]
We have a liner pool.
When we had a new liner installed, we went with a darker liner than we had originally. We no longer have to use a solar blanket as the water heats up nicely on it's own. |
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Posted: 1/2/2012 2:02:38 PM EDT
[#14]
Quoted:
Your friend doesnt understand physics. This. Oh, and your friend is an idiot. |
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Posted: 1/2/2012 2:05:08 PM EDT
[#15]
Quoted:
How does the color of the sustrate at the bottom of a shallow body of water affect the amount of heat the water absorbs from sunlight ? A friend of mine has an inground pool. He claims that if you want the water to be cold you paint the bottom of the pool black. If you want the water to be warm you paint the bottom white. This seems to me to be backwards. A darker bottom would absorb more heat from the sun and thus warm the water more then a lighter one right ? However he has had this pool for 30 years and has painted it many times so he may be right. What says the hive ? editted for spelling You actually think more than 1% of GD will know what this word means? 
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Posted: 1/2/2012 2:13:49 PM EDT
[#16]
Quoted:
he's probably thinking about a reflector for a campfire, and applying the concept laterally––radiant energy would heat the water on the way in, and also on the way out after being reflected from the bottom of the pool. but i'm pretty sure this would be dwarfed by effect of the black WRT heating the pool enclosure, and therefore the water. think albedo. I was also thinking maybe this made sense. Also if a darker bottom makes a pool warmer, then why are 99% of pools painted a light color on the bottom ? |
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Posted: 1/2/2012 2:23:35 PM EDT
[#17]
Look up blackbody heat absorbtion and radiation in a Thermodynamics book and you will find your answer. I will dig mine up and see if I can find you a good answer. A perfectly black body will absorb heat in air, but I am not sure about water.
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Posted: 1/2/2012 2:30:43 PM EDT
[#18]
Quoted:
Quoted:
he's probably thinking about a reflector for a campfire, and applying the concept laterally––radiant energy would heat the water on the way in, and also on the way out after being reflected from the bottom of the pool. but i'm pretty sure this would be dwarfed by effect of the black WRT heating the pool enclosure, and therefore the water. think albedo. I was also thinking maybe this made sense. Also if a darker bottom makes a pool warmer, then why are 99% of pools painted a light color on the bottom ? Because most people find it more attractive. |
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Posted: 1/2/2012 2:32:14 PM EDT
[#19]
Quoted:
Quoted:
How does the color of the sustrate at the bottom of a shallow body of water affect the amount of heat the water absorbs from sunlight ? A friend of mine has an inground pool. He claims that if you want the water to be cold you paint the bottom of the pool black. If you want the water to be warm you paint the bottom white. This seems to me to be backwards. A darker bottom would absorb more heat from the sun and thus warm the water more then a lighter one right ? However he has had this pool for 30 years and has painted it many times so he may be right. What says the hive ? editted for spelling You actually think more than 1% of GD will know what this word means?
Given that it is not an actual word . . . |
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Posted: 1/2/2012 2:37:54 PM EDT
[#20]
Quoted:
Quoted:
How does the color of the sustrate at the bottom of a shallow body of water affect the amount of heat the water absorbs from sunlight ? A friend of mine has an inground pool. He claims that if you want the water to be cold you paint the bottom of the pool black. If you want the water to be warm you paint the bottom white. This seems to me to be backwards. A darker bottom would absorb more heat from the sun and thus warm the water more then a lighter one right ? However he has had this pool for 30 years and has painted it many times so he may be right. What says the hive ? editted for spelling You actually think more than 1% of GD will know what this word means?
Good question. I know I sure don't know what "sustrate" means. __________________________________________________________________ Cross-platform gun database/electronic bound book (v1.2) (and the original thread). «nolite confidere in principibus, in filiis hominum quibus non est salus» |
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Posted: 1/2/2012 2:38:45 PM EDT
[#21]
Water absorbs poorly in the visible part of the spectrum (which is why it's transparent...) and this accounts for about half of the available solar energy. A black pool bottom will absorb nearly all the energy in the spectrum.
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Posted: 1/2/2012 2:39:59 PM EDT
[#22]
Regardless of the heating or cooling, what kind of retard would paint a fucking pool bottom black anyway?
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Posted: 1/2/2012 2:40:49 PM EDT
[#23]
Quoted:
Quoted:
he's probably thinking about a reflector for a campfire, and applying the concept laterally––radiant energy would heat the water on the way in, and also on the way out after being reflected from the bottom of the pool. but i'm pretty sure this would be dwarfed by effect of the black WRT heating the pool enclosure, and therefore the water. think albedo. I was also thinking maybe this made sense. Also if a darker bottom makes a pool warmer, then why are 99% of pools painted a light color on the bottom ? To make them look clearer and more inviting. At least that's what I've always thought. Who wants to jump into a murky black pool, anyhow? Also, drowndeded kids are easier to spot in pools that are painted a light color. I think. __________________________________________________________________ Cross-platform gun database/electronic bound book (v1.2) (and the original thread). «nolite confidere in principibus, in filiis hominum quibus non est salus» |
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Posted: 1/2/2012 2:41:31 PM EDT
[#24]
Quoted:
Quoted:
Paint one half black and the other half white and see which end is warmer. If you do that, you will have two different densities of the water, which won't combine similar to water and oil. Might forma thunder storm over his pool. 
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Posted: 1/2/2012 2:41:35 PM EDT
[#25]
Quoted:
Quoted:
Paint one half black and the other half white and see which end is warmer. If you do that, you will have two different densities of the water, which won't combine similar to water and oil. This is combined excellence. 
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Posted: 1/2/2012 2:42:32 PM EDT
[#26]
Quoted:
Quoted:
Very interesting question. I don't know your answer. I'm curious about the topic as well. When I was a kid my Dad decided to paint our house black to save money on heating bills. Being the enthusiastic at the start of a project kind of a guy, he only painted half. Or maybe he meant to only paint the east and west sides of the house. Of course he never felt the need to explain his idea to us kids.The end result was the same: A half black, half white house. People used our house to give directions to others in the area for years. ("Okay, you go straight, past the segregated house, then...") Did it save him money on heating bills? He never mentioned whether it did or not. [loll] |
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Posted: 1/2/2012 2:45:20 PM EDT
[#27]
Quoted:
Quoted:
How does the color of the sustrate at the bottom of a shallow body of water affect the amount of heat the water absorbs from sunlight ? A friend of mine has an inground pool. He claims that if you want the water to be cold you paint the bottom of the pool black. If you want the water to be warm you paint the bottom white. This seems to me to be backwards. A darker bottom would absorb more heat from the sun and thus warm the water more then a lighter one right ? However he has had this pool for 30 years and has painted it many times so he may be right. What says the hive ? editted for spelling You actually think more than 1% of GD will know what this word means?
Well I think he meant substrate which doesn't make sense either, but hey this is a thread full of fail anyway. Try this OP, the bottom of the pool is painted black. Is English a second language? |
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Posted: 1/2/2012 2:47:09 PM EDT
[#28]
Quoted:
Quoted:
Quoted:
How does the color of the sustrate at the bottom of a shallow body of water affect the amount of heat the water absorbs from sunlight ? A friend of mine has an inground pool. He claims that if you want the water to be cold you paint the bottom of the pool black. If you want the water to be warm you paint the bottom white. This seems to me to be backwards. A darker bottom would absorb more heat from the sun and thus warm the water more then a lighter one right ? However he has had this pool for 30 years and has painted it many times so he may be right. What says the hive ? editted for spelling You actually think more than 1% of GD will know what this word means?
Given that it is not an actual word . . . If you live in Brazil and have a heart problem it's a word... Propatyl nitrate. May be a little expensive to line the bottom of a pool with.... And being a vasodilator funny things may happen to your guests. |
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Posted: 1/2/2012 2:49:10 PM EDT
[#29]
While the sun is shining, the pool will heat up with a black bottom.
However, at night a black bottom will radiate back out into space thus cooling the water more than a white bottom. The ideal situation would be to have a black bottom during the day and an aluminum surface at night. |
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Posted: 1/2/2012 2:50:12 PM EDT
[#30]
Heat is long wave radiation which is emitted at a higher rate from a dark colored surface than a light relective surface see albedo.
However since water will absorb most of its heat from direct sunlight at the surface the color of the bottom is of little importance. |
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Posted: 1/2/2012 2:51:43 PM EDT
[#31]
Quoted:
Very interesting question. I don't know your answer. I'm curious about the topic as well. When I was a kid my Dad decided to paint our house black to save money on heating bills. He was... eccentric. Being the enthusiastic-at-the-start-of-a-project kind of a guy, he only painted half. Or maybe he meant to only paint the east and west sides of the house. Of course he never felt the need to explain his idea to us kids.The end result was the same: A half black, half white house. People used our house to give directions to others in the area for years. ("Okay, you go straight, past the segregated house, then...") Did it save him money on heating bills? He never mentioned whether it did or not. I've never met your dad, and yet I feel a deep and abiding respect for the man. |
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Posted: 1/2/2012 3:00:28 PM EDT
[#32]
Quoted:
Quoted:
Very interesting question. I don't know your answer. I'm curious about the topic as well. When I was a kid my Dad decided to paint our house black to save money on heating bills. He was... eccentric. Being the enthusiastic-at-the-start-of-a-project kind of a guy, he only painted half. Or maybe he meant to only paint the east and west sides of the house. Of course he never felt the need to explain his idea to us kids.The end result was the same: A half black, half white house. People used our house to give directions to others in the area for years. ("Okay, you go straight, past the segregated house, then...") Did it save him money on heating bills? He never mentioned whether it did or not. I've never met your dad, and yet I feel a deep and abiding respect for the man. I'm going to repeat this experiment with a black and white cookie in the sun tomorrow. |
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Posted: 1/2/2012 3:15:05 PM EDT
[#33]
Quoted:
While the sun is shining, the pool will heat up with a black bottom. However, at night a black bottom will radiate back out into space thus cooling the water more than a white bottom. The ideal situation would be to have a black bottom during the day and an aluminum surface at night. There will be a greenhouse effect. |
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Posted: 1/4/2012 7:50:14 PM EDT
[#34]
Quoted:
Quoted:
Quoted:
Very interesting question. I don't know your answer. I'm curious about the topic as well. When I was a kid my Dad decided to paint our house black to save money on heating bills. He was... eccentric. Being the enthusiastic-at-the-start-of-a-project kind of a guy, he only painted half. Or maybe he meant to only paint the east and west sides of the house. Of course he never felt the need to explain his idea to us kids.The end result was the same: A half black, half white house. People used our house to give directions to others in the area for years. ("Okay, you go straight, past the segregated house, then...") Did it save him money on heating bills? He never mentioned whether it did or not. I've never met your dad, and yet I feel a deep and abiding respect for the man. I'm going to repeat this experiment with a black and white cookie in the sun tomorrow. Well? How'd the cookies experiment go? or did you eated them? |
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Posted: 1/5/2012 5:29:38 PM EDT
[#35]
Quoted:
Quoted:
Quoted:
Quoted:
How does the color of the sustrate at the bottom of a shallow body of water affect the amount of heat the water absorbs from sunlight ? A friend of mine has an inground pool. He claims that if you want the water to be cold you paint the bottom of the pool black. If you want the water to be warm you paint the bottom white. This seems to me to be backwards. A darker bottom would absorb more heat from the sun and thus warm the water more then a lighter one right ? However he has had this pool for 30 years and has painted it many times so he may be right. What says the hive ? editted for spelling You actually think more than 1% of GD will know what this word means?
Given that it is not an actual word . . . If you live in Brazil and have a heart problem it's a word... Propatyl nitrate. May be a little expensive to line the bottom of a pool with.... And being a vasodilator funny things may happen to your guests. "Come over and swim in my pool - it'll improve your circulation, I guarantee it!" |
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Posted: 1/5/2012 5:32:31 PM EDT
[#36]
Quoted: Quoted: Paint one half black and the other half white and see which end is warmer. If you do that, you will have two different densities of the water, which won't combine similar to water and oil. This makes the most sense to Deepak Chopra. |
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Posted: 1/5/2012 5:34:35 PM EDT
[#37]
Quoted:
he's probably thinking about a reflector for a campfire, and applying the concept laterally––radiant energy would heat the water on the way in, and also on the way out after being reflected from the bottom of the pool. but i'm pretty sure this would be dwarfed by effect of the black WRT heating the pool enclosure, and therefore the water. think albedo. Bingo. |
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