On Sun, 13 Sep 2009 02:08:20 +0100, "christofire"
wrote:

I had understood it to be impossible on the basis of normal physics but Art
Unwin's claim wasn't clear in respect of polarisation.

Hi Chris,

Black body radiators do qualify as Isotropic; and as Art has claimed
high efficiencies for RF impracticalities, it must be for efficient
Infrared emission.

73's
Richard Clark, KB7QHC