Peter Hagelstein Discusses Latest Theoretical Modeling for Cold Fusion Effects
1:3:02
1,838
ColdFusionNow
Reddit
Peter Hagelstein, MIT "Anomalies associated with Fracture Experiments"
March 23, 2014 at the CF/LANR Colloquium at MIT
See more CF/LANR Colloquium at MIT presentation files
coldfusionnow.org/interviews/2014-cflanr-colloquium-at-mit-full-coverage/

Commenti
  • Barry Kort
    Barry Kort

    About a year after CBS 60 Minutes aired their episode on Cold Fusion, I followed up with Rob Duncan to explore Richard Garwin's thesis that McKubre was measuring the input electric power incorrectly. It turns out that McKubre was reckoning only the DC power going into his cells, and assuming (for arcane technical reasons) there could not be any AC power going in, and therefore he didn't need to measure or include any AC power term in his energy budget model. Together with several other people, I helped work out a model for the omitted AC power term in McKubre's experimental design. Our model showed that there was measurable and significant AC power, arising from the fluctuations in ohmic resistance as bubbles formed and sloughed off the surface of the palladium electrodes. Our model jibed with both the qualitative and quantitative evidence from McKubre's reports: 1) McKubre (and others) noted that the excess heat only appeared after the palladium lattice was fully loaded. And that's precisely when the Faradaic current no longer charges up the lattice, but begins producing gas bubbles on the surfaces of the electrodes. 2) The excess heat in McKubre's cells was only apparent, significant, and sizable when the Faradaic drive current was elevated to dramatically high levels, thereby increasing the rate at which bubbles were forming and sloughing off the electrodes. 3) The effect was enhanced if the surface of the electrodes was rough rather than polished smooth, so that larger bubbles could form and cling to the rough surface before sloughing off, thereby alternately occluding and exposing somewhat larger fractions of surface area for each bubble. The time-varying resistance arising from the bubbles forming and sloughing off the surface of the electrodes - after the cell was fully loaded, enhanced by elevated Faradaic drive currents and further enhanced by a rough electrode surface - produced measurable and significant AC noise power into the energy budget model that went as the square of the magnitude of the fluctuations in the cell resistance. To a first approximation, a 17% fluctuation in resistance would nominally produce a 3% increase in power, over and above the baseline DC power term. Garwin and Lewis had found that McKubre's cells were producing about 3% more heat than could be accounted for with his energy measurements, where McKubre was reckoning only the DC power going into his cells, and (incorrectly) assuming there was no AC power that needed to be measured or included in his energy budget model. I suggest slapping an audio VU meter across McKubre's cell to measure the AC burst noise from the fluctuating resistance. Alternatively use one of McKubre's constant current power supplies to drive an old style desk telephone with a carbon button microphone. I predict the handset will still function: if you blow into the mouthpiece, you'll hear it in the earpiece, thereby proving the reality of an AC audio signal riding on top of the DC current.

  • Richard Pollack
    Richard Pollack

    Happy to see Alberto Carpinteri's work being discussed. There is something important going on there.

Prossimi video