On 2012-04-01, David DeLaney wrote:
> J. Waldby <wichitajayha...@REMOVETHISmsn.com> wrote:Isn't gross transfer Q from body 1 to body 2 proportional to (T_1)^4,
>>Adam Funk wrote:
>>> Following the one about the idea that forces are proportional to
>>> 1/(r^2) because there are 3 spatial dimensions: is there any similar
>>> explanation for why radiation from one body is proportional to T^4?
>>Can you bring me up to speed? What is T here? Also, are we talking
> T is the temperature, though technically you get that it's the difference
so *net* transfer from body 1 to body is proportional to
(T_1)^4 - (T_2)^4
where T is absolute temperature? (Let's be honest: I'm trying to
> This is, in part, why it's so much more dangerous to beI thought convection was the most important form of heat transfer from
> out in zero-degree weather than in 30-degree weather (Fahrenheit, fondly),
> and so much more dangerous again to be out in -30 -degree weather; if you
> double the temperature difference, heat loss by radiation goes up by a factor
> of 16. (Of course for weather, convection & conduction also play large parts.)
the human body in a cold environment.
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