Bob, I was unaware of the fact that superconductors only work at DC. I knew they were used in microwave cavities so I assumed that the effect was more broadband than you are suggesting. What is the theory that leads to them loosing their capabilities as frequency is increased?
Dave -----Original Message----- From: Bob Higgins <[email protected]> To: vortex-l <[email protected]> Cc: Bob Higgins <[email protected]> Sent: Mon, Jan 27, 2014 7:53 pm Subject: Re: [Vo]:"energy driven superconductivity" and IR coherence for LENR Note that superconductors are only zero resistance for DC. As the frequency goes up, there is a finite resistance that increases with frequency. At 1 GHz RF, the superconductor still has some advantage over copper at the same frequency. As you start going beyond 10 GHz superconductors become less useful and at some frequency, there is a cross-over and copper is better. For the upper microwave bands, resonators with highest Q are pure dielectric devices with no conductor at all. So using a "superconductor" for THz or optical resonators is not practical. HTC superconductors are worse than type 1 superconductors in this respect. Otherwise superconductors would always look white (or mirror if polished) if they were zero resistance at optical frequencies because they would have perfect reflectance. HTC superconductors are black. 1D systems will behave differently, and there may be some opportunity there. I don't believe SPPs are 1D. On Mon, Jan 27, 2014 at 7:26 PM, David Roberson <[email protected]> wrote: The superconducting regions might be detectable by the way they interact with electromagnetic waves. There is discussion about trapped photons from time to time and that might be due to the zero loss walls of a superconducting cavity. I can't think of a better method of trapping energy for a significant amount of time. This process may appear somewhat like what happens when a photon impacts an atom and its energy is stored within. The superconducting cavity could behave like a much larger version that can trap many photons at the same time. Dave -----Original Message----- From: Jed Rothwell <[email protected]> To: vortex-l <[email protected]> Sent: Mon, Jan 27, 2014 1:55 pm Subject: Re: [Vo]:"energy driven superconductivity" and IR coherence for LENR Edmund Storms <[email protected]> wrote: The claims are based on assumptions, not on direct measurements normally used to identify a superconductor. Yes, the claims are speculation. It would be impossible to make direct measurements across microscopic domains. - Jed
