except that the feathers are externally insulative, but internally
conductive. So the body feathers will then warm the top feathers, and heat
keeps moving till equilibrium.
On Sat, Mar 16, 2013 at 2:24 PM, Harry Veeder wrote:
> On Sat, Mar 16, 2013 at 4:57 PM, Alexander Hollins
> wrote:
> > Bec
Sorry guys,
I read the paper, and it said the ice temperature was also far below
the air temperature.
So that explains why on balance their coats can be colder all over and
not just on the tops of their shoulders and heads.
Nothing to see here.
harry
On Sat, Mar 16, 2013 at 5:09 PM, Jones Beene
Never mind. The paper says the temperature of the ice was -45C which
was also well below the air temperature of -20C. All directions are
colder from a radiative standpoint, so that explains it.
Sorry, to drag you into my confusion.
Harry
On Sat, Mar 16, 2013 at 5:24 PM, Harry Veeder wrote:
> O
On Sat, Mar 16, 2013 at 4:57 PM, Alexander Hollins
wrote:
> Because up is colder.
Then only the the tops of their shoulders and the tops of their head
should be colder.
Harry
>
> On Sat, Mar 16, 2013 at 12:11 PM, Harry Veeder wrote:
>>
>> So why is the surface preferentially emitting radiati
Exactamundo, Robin - where is Fred Sparber when we need him?
http://en.wikipedia.org/wiki/Swamp_cooler
... I sense the smile of the Cheshire cat somewhere out there in Neverland
:)
-Original Message-
From: mix...@bigpond.com
In reply to Harry Veeder's message of Sat, 16 Mar 201
Because up is colder.
On Sat, Mar 16, 2013 at 12:11 PM, Harry Veeder wrote:
> So why is the surface preferentially emitting radiation in the up
> direction?
>
> As an aside, I would like to remark that it is possible to invent
> models which work according to the laws of physics which predict th
In reply to Harry Veeder's message of Sat, 16 Mar 2013 13:22:03 -0400:
Hi,
[snip]
>Does the explanation make sense to you?
>harry
>
>Emperor penguin body surfaces cool below air temperature
>
>http://royalsociety.org/news/2013/cool-penguins/
>
>Harry
I can't be due to radiative cooling. Wind chil
So why is the surface preferentially emitting radiation in the up direction?
As an aside, I would like to remark that it is possible to invent
models which work according to the laws of physics which predict the
measured behaviour of a given system. However, upon reflection and
further study the
yes, because the feathers let heat flow internally. the heat is all leaving
in the up direction.
On Sat, Mar 16, 2013 at 11:11 AM, Harry Veeder wrote:
> here is the paper
> http://www.ipev.fr/pages/bio%20lettersl
>
> the back and sides of the peguin are cooler too.
>
> Harry
>
> On Sat, Mar 16,
If it is so straightforward, then it should be possible to build a
thermal model of perguin with a heater covered in some insulation
which replicates the surface temperatures of a living peguin.
Harry
On Sat, Mar 16, 2013 at 2:11 PM, Harry Veeder wrote:
> here is the paper
> http://www.ipev.fr/p
here is the paper
http://www.ipev.fr/pages/bio%20lettersl
the back and sides of the peguin are cooler too.
Harry
On Sat, Mar 16, 2013 at 2:04 PM, Alexander Hollins
wrote:
> wear a well insulated jacket outside at night someplace cold (no clouds) for
> a couple of hours. Feel the shoulders of th
wear a well insulated jacket outside at night someplace cold (no clouds)
for a couple of hours. Feel the shoulders of the jacket. They will be
colder than the sides. Same thing. your "outer shell" becomes colder than
the surrounding air.
On Sat, Mar 16, 2013 at 10:22 AM, Harry Veeder wrote:
> D
Does the explanation make sense to you?
harry
Emperor penguin body surfaces cool below air temperature
http://royalsociety.org/news/2013/cool-penguins/
Harry
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