"Richard Clark" wrote in message
...
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


.... but are randomly polarised, and I'd expect communication between a
randomly-polarised antenna and either a normal, polarised antenna or another
randomly polarised one to be lossy in comparison with the unusual case.

Nevertheless, the principle that heaters are highly efficient is an amusing,
occasionally useful one - standby dissipation contributing to heating your
house and all that.

Chris