On 6/5/2008 1:40 PM, Harry Veeder wrote: > > > On 6/5/2008 12:09 PM, Jones Beene wrote: > >> --- Charles M. Brown wrote: >> >>> Paul Lowrance calculated that ambient IR blackbody >> radiation was ~ 400 watts/ M^2. >> >> Even if this figure were to be correct, and I think it >> is high - >> >> ... the problem is not the absolute level of blackbody >> irradiation, per se, BUT instead it is finding the >> proper "sink" in close proximity to that radiation. > > the underside of a aeroplane? > > Harry >
since at night there is presumably more IR from the ground then from space. Harry
