> I would have thought anything that can radiate heat slowly and consistently would by necessity also absorb heat slowly and consistently
Something like a ratio of flame-side heat absorption at flame temperatures, to room-side emissivity at room-side temperatures(wavelengths)?? This could fall out from material properties without appearing as an explicit design detail (e.g. a surface treatment).
Something like a ratio of flame-side heat absorption at flame temperatures, to room-side emissivity at room-side temperatures(wavelengths)?? This could fall out from material properties without appearing as an explicit design detail (e.g. a surface treatment).