Yes and the thickness of the alumina and the "time constants" of heat transfer dTouter/dt = K(Tinner - Touter) or similare suitable equation.
On Sat, Oct 11, 2014 at 12:44 AM, Alan Fletcher <[email protected]> wrote: > Not scientific -- but a search of google images for "alumina transmission" > indicates that you can get pretty much any profile you want (Include > transparent sapphires, of course), and that the actual profiles vary wildly. > > One would thus have to characterize the ceramic actually used, and then > calculate the power (as Goat & Jones suggested) based on a mixture of > transmitting and conducting. > > I think that this could be modelled as a radiating cylinder enclosed by a > transmitting/conducting cylinder, but you'd have to know ALL the parameters > to do it. Complicated by the fins, of course. > > I'm still inclined to say that the quantitative numbers are suspect. > > We really shouldn't have to look at un-annotated photos to figure out how > even the coloring is. > >
