If you put a blanket over a cold rock, does it keep the rock warm?
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reminds me of my ex-wife. 🙂
Did we marry and divorce the same woman? 😉
Well, if it’s a rock hyrax it does.
You nailed it.
Please define the term ‘warm’.
🙂
Please define all of the initial conditions, unless this is just IPCC-type “science”.
Well now, according the IPCC, and the “greenhouse effect” hypothesis, the rock will continue to heat until a “tipping point” is reached, at such time, the Earth’s crust is no longer able to support the rock, giving way to a decent to the center of the Earth, whereby feedback mechanisms will cause a runaway feedback loop, destroying the Earth and all contents and inhabitants of this solar system. I think they made a movie like this once, The China Syndrome? …
squid – I think you’re mistaking the IPCC’s interpretation/exaggeration of the greenhouse effect, with the actual greenhouse effect.
That’s not what Tony is saying. He’s saying that, objectively, there is a greenhouse effect. It’s just that it doesn’t have the scary, positive forcings and feedbacks that would lead to the doomsday scenarios of which the catastrophists are so certain.
All evidence points to a climate sensitivity to a doubling of CO2 of less than natural variability.
Well that would depend. Is the blanket transparent and is the sun shining
Yes, you can create a structure that allows energy in as radiation, and prevents heat loss due to convection. Such a structure is generally called a “green house” or just a hot car parked in the sun.
The reason this works, is because convection it the primary mechanism for heat loss on the surface of the Earth. As a good first approximation, ignore everything other than convection.
(1) If the air surrounding the blanket is warmer than the rock, the blanket will keep the rock cooler for a longer period of time than if there was no blanket over the rock.
(2) If the air surrounding the blanket is cooler than the rock, the blanket will keep the rock warmer for a longer period of time than if there was no blanket over the rock.
(3) If the rock is naturally radioactive, the blanket shielding the rock will enable the rock to warm itself faster than if there was no blanket over the rock.
Liberal answer…..It’s all your fault, regardless of the outcome…. pay up.
I don’t like Blanket Statements. 😛
Andrew
ROFLMAO …. 🙂
Just another cover up operation, nothing to see here folks.
I guess now is a good time to throw in the towel
The blanket slows the rock from getting warmer and the air from getting colder. Remember the laws of thermo, heat flows from hotter to colder, not from colder to hotter. W/o the blanket the rock will gain heat and the air will lose heat at a given rate until they are at the same temperature. That will still happen, the blanket just slows it all down. All three will eventually end up the same temp.
If the air is hotter than your swimming pool, sensible heat will move from the air to the pool. So how come you need a heater? Because the latent heat of the water evaporating from the pool moves a thousand times more energy from the pool to the air than the sensible heat of the air heats the water. Latent heat doesn’t care about the temperature difference, only the concentration of water vapor.
The AGW CO2 loop works on sensible heat which means it makes a spits worth of heat difference to the ocean which is evaporating gazillion tons of water each day to feed the cloud-precipitation cycle.
For a small $8.75 million, we can study the question. The foregone conclusion is global warming is causing rocks to loose their heat more rapidly as the blanket test will prove, resulting in a positive feedback that makes global warming much worse than we thought. In the conclusion section of the abstract we will make a desperate plea underscoring the need to fund additional research.
No need as the UN has already decreed anthropological changes in rock morphology is catastropically happening now.
There is however huge funding allotments available to prove this so, and the link to anthropological CO2 generation.
I’ve got to make it over to grants.gov to get my fair share of that funding. 😀
Pshaw! I will conduct the study for only $7.5million. 😉
Anything that limits convection will reduce heat loss, including blankets, greenhouses, insulation in the attic, etc., but not gases free to adiabatically rise and cool.
What happens when you open the panes of glass at the top of a greenhouse? The temp equalizes with outdoors since convection is no longer limited.
But when you open the top vent in the greenhouse you let the cold in?
http://media-cache-ec0.pinimg.com/736x/fd/ae/fb/fdaefbb2dc8b31b1cc5ab674b47eb787.jpg
Reminds me of a physics professor who challenged us with this quizzical: If you open the door to a photographer’s darkroom, where do the darkons go once the photons invade the space?
Or as my niece in her innocent childhood asked me…
“But where does the flame go when you blow it out?”
I was stumped for a reply.
Cold air is more dense and will flow according to gravity. A physical property, not thermal.
In reality, Earth’s atmosphere (and oceans) act as a moderator – not as a greenhouse, in the sense that most people understand it. The Moon ranges from 120C to -170C day/night. Both receive the same daylight energy from the Sun and Earth’s albedo is only around 30% greater than the Moon.
So, the atmosphere acts like a greenhouse or blanket at night, but like an evaporative/convective cooler during the day.
Somebody here is overqualified to be elected to Congress–overqualified to make climate policy!
I have carefully read all the explanation here, and I believe despite all the pseudo science and calculations shown, the correct answer hasn’t been given yet. It is quite simple and plain to someone with even my limited education. I’m rather disappointed, frankly.
Electric blanket, duh!
Finanally someone got he right answer.
But did you plug in the electric blanket?
Yep, plugged into the solar panel for the night 🙂
I just want to know who the heck is Tony?
You really want to know who is Steven Goddard. Click the appropriate link in the site banner.
“Steven Goddard” is a pseudonym for Tony Heller, just like “Jason Calley” is a pseudonym for — just a moment…
(What? No, I am online at the moment… Really? Is it important? Ok…)
Sorry, just had something come up, I have to go.
Blanket Jackson?
No
Oddly enough, I’ve been thinking about that very question. If I understand the question correctly, the answer is “No”. If the stone is warmer than its surroundings to begin with, the blanket may reduce the rate at which it cools, but won’t stop it from assuming the temperature of its surroundings.
Now, if in imagination you replace the stone with something that produces heat (like you or me) you have a very different situation.