On Sun, Oct 19, 2014 at 5:49 PM, Jed Rothwell <jedrothw...@gmail.com> wrote:
> H Veeder <hveeder...@gmail.com> wrote: > > >> Consider the difference between the sun at noon and the sun at dawn/dusk. >> The interior of the HotCat glows white but from the outside it glows red >> like a sunrise because it is shinning through an atmosphere of alumina. >> > > It does not work that way. If the outside surface temperature really is > 1400 deg C, then the outside surface material should be incandescent white. > It does not matter what the inside temperature is. All materials glow with > the same incandescent color at a given temperature. That is what the > textbooks claim. > > I doubt any light is shining through the alumina, but even if it is, the > light from incandescence of the outside alumina material itself should be > white. > > - Jed > > This is true for an incandescent body, but remember the reactor may not be an incandescent body. An incandescent body passively heats itself by receiving energy from an external energy source. e.g. clay pot in a hot kiln or a resistor with current flowing throw it. On the other hand the Sun actively heats itself, but if it is identified as a white incandescent body then its surface temperature will be underestimated by 4600C (6000C - 1400C). Similarly, if the HotCat actively heats itself but it is identified with a red incandescent body then its surface temperature will be underestimated. The Stephan-Blotzman law is valuable because it is agnostic on the issue of how a body comes to have a surface temperature. It is not a relationship between input power and output power. It is a relationship between the surface temperature and output power. Attaching the label "Incandescent" to a body comes with an assumption about the underlying dynamics which bring about a body's temperature. The presumption of incandescence has probably been true of most investigations of LENR/CF heat anomalies but this new report shows it is an inaccurate assumption. Harry
