Hi Terry, All, Isn't air close to a vacuum which is close to 377 Ohms? ----- Original Message ----- From: Tesla List <tesla-at-pupman-dot-com> To: <tesla-at-pupman-dot-com> Sent: Tuesday, May 18, 1999 8:55 PM Subject: Re: Wireless Energy Transmission Original Poster: Terry Fritz <twftesla-at-uswest-dot-net> Since the air has an intrinsic impedance of ~50 ohms Terry