H-Cat Resonance Puzzle

Here’s a video that I found interesting and thought I’d put it up here to see if anyone has any ideas about what might be going on. Thanks to David for sharing this. The video is from an H-Cat experimenter named Peter Bannister, who discovered in the course of putting together a h-cat system in which catalysts are placed in a metal pipe, that a strong resonance effect is found after the catalysts reach a certain temperature.

The effect was discovered completely by accident, and interestingly, the effect continues for five minutes or so after he turns off gas flow to his system. I was thinking that maybe the gas flow into the metal pipe was creating an organ pipe-like effect, but the effect seems to be coming from the catalyst itself.

The video is quite long — it begins with a demonstration of the resonance effect, then Peter backtracks and takes us through the details of the setup, and shows the steps he took to get the resonance. I thought this would be a nice brain-teaser for ECW readers!


  • note that graham hubler told in a synthetic slides that among the trigger of LENr there is ultrasounds…

    https://mospace.umsystem.edu/xmlui/bitstream/handle/10355/37370/SidneyKimmelInstituteOverviewPresentation.pdf?sequence=1

    • BroKeeper

      If these are multiple ultrasounds (beyond hearing range) at near frequencies could result with lower consonant and dissonant beats within our hearing range.

  • note that graham hubler told in a synthetic slides that among the trigger of LENr there is ultrasounds…

    https://mospace.umsystem.edu/xmlui/bitstream/handle/10355/37370/SidneyKimmelInstituteOverviewPresentation.pdf?sequence=1

    • Brokeeper

      If these are multiple ultrasounds (beyond hearing range) at near frequencies then they could result with lower consonant and dissonant beats tuned to the pipe’s frequency within our hearing range. It would be interesting to know if different pipe diameters/lengths cause different vibrations if any?

  • Andreas Moraitis

    That’s roughly a 220 Hz sine wave. It could be a harmonic of the utility frequency. Was that experiment done in Europe or in the USA? European countries use a utility frequency of about 50 Hz, the USA 60 Hz. In the present case, ca. 55 Hz (1/4 of 220) would fit. Since the pitch is pretty constant, I wouldn’t expect that the effect is related to pressure.

    • Andreas Moraitis

      I just read that the sound appears to come from the catalyzer. That’s indeed strange. I would like to know the utility frequency anyway.

  • Andreas Moraitis

    That’s roughly a 220 Hz sine wave. It could be a harmonic of the utility frequency. Was that experiment done in Europe or in the USA? European countries use a utility frequency of about 50 Hz, the USA 60 Hz. In the present case, ca. 55 Hz (1/4 of 220) would fit. Since the pitch is pretty constant, I wouldn’t expect that the effect is related to pressure.

    • Andreas Moraitis

      I just read that the sound appears to come from the catalyzer. That’s indeed strange. I would like to know the utility frequency anyway.

  • Dave

    Heated tubes will Resonate.

    • artefact

      maybe that is Focardis hammer.

      the contraction of the metal pushes the H and or D into the lattice.

      The e-cats have input for the heating element and input for “frequencies”.
      The frequency could be adjusted to have the peak when the contraction occurs.

  • Dave

    Heated tubes will Resonate.

    • artefact

      maybe that is Focardis hammer.

      the contraction of the metal pushes the H and or D into the lattice.

      The e-cats have input for the heating element and input for “frequencies”.
      The frequency could be adjusted to have the peak when the contraction occurs.

  • Rabbitduck

    The sound originating is thermoacoustic phenomenon.
    http://en.wikipedia.org/wiki/Thermoacoustic_heat_engine

  • Rabbitduck

    The sound source is thermoacoustic phenomenon.
    http://en.wikipedia.org/wiki/Thermoacoustic_heat_engine

  • Andreas Moraitis

    @disqus_u13Tu1NDEO:disqus (by some reason I can’t reply directly)

    Sorry, I don’t agree. Thermoacoustic heat engines create the sound
    artificially (with a loudspeaker, for instance), as is described in the
    article you have pointed to.

  • Andreas Moraitis

    @disqus_u13Tu1NDEO:disqus (by some reason I can’t reply directly)

    Sorry, I don’t agree. Thermoacoustic heat engines create the sound
    artificially (with a loudspeaker, for instance), as is described in the
    article you have pointed to.

    • Rabbitduck

      This link may be better.
      http://en.wikipedia.org/wiki/Thermoacoustics
      Look Fig. 2. a

      • Andreas Moraitis

        Thanks, that looks much better. Then, perhaps the air inside the metal tube would be the source of the sound. One could easily verify this by using tubes of different lengths. A shorter tube should give a higher tone, whereas a longer tube should produce a deeper tone. The same as with organ pipes.

    • Rabbitduck

      For some reason, my new account is behaving strangely.

    • Rabbitduck

      For some reason, my new account is behaving strangely…

  • Andreas Moraitis

    Thanks, that looks much better. Then, perhaps the air inside the metal tube would be the source of the sound. One could easily verify this by using tubes of different lengths. A shorter tube should give a higher tone, whereas a longer tube should produce a deeper tone. The same as with organ pipes.

  • Gerard McEk

    Something inside the tube starts to vibrate, probably the catalytic
    material. Could take out one of them to see if the vibration still
    continues. My guess is that water vapour is formed between the two
    peace’s and released frequently in a radial direction, lifting the upper
    one short and slightly. It seems that the resonance-frequency of the
    pipe is sort of the same as the vibration of the catalytic material, and
    so enhancing the sound, or that the sound of the standing wave in the
    pipe determines the vibration frequency of the material. I think the
    latter is the case.

  • Gerard McEk

    Something inside the tube starts to vibrate, probably the catalytic
    material. Could take out one of them to see if the vibration still
    continues. My guess is that water vapour is formed between the two
    peace’s and released frequently in a radial direction, lifting the upper
    one short and slightly. It seems that the resonance-frequency of the
    pipe is sort of the same as the vibration of the catalytic material, and
    so enhancing the sound, or that the sound of the standing wave in the
    pipe determines the vibration frequency of the material. I think the
    latter is the case.

  • Alan Smith

    This is another version of the ‘singing flame’ -well known to anyone who regularly played with old-style Bunsen burners. No magic involved, This article from 1874 explains the phenomenon.

    http://www.nature.com/nature/journal/v10/n247/abs/010233a0.html

  • Alan Smith

    This is another version of the ‘singing flame’ -well known to anyone who regularly played with old-style Bunsen burners. No magic involved, This article from 1874 explains the phenomenon.

    http://www.nature.com/nature/journal/v10/n247/abs/010233a0.html

  • georgehants

    There always seems to be a scramble by scientists to explain away an effect.
    This is very bad practice that has led to the fiasco of Cold Fusion and many other subjects in science.
    Giving “opinions” on possibilities is fine, but it must go along with advice to continue competent and open-minded Research to be sure that something important is not missed.
    The times of ridiculous “expert opinion” in science, hopefully are ending and the more responsible and professional methods of investigation and Research are to be now used and taught to our students.

  • georgehants

    There always seems to be a scramble by many scientists to explain away an effect.
    This is very bad practice that has led to the fiasco of Cold Fusion and many other subjects in science.
    Giving “opinions” on possibilities is fine, but it must go along with advice to continue competent and open-minded Research to be sure that something important is not missed.
    The times of ridiculous “expert opinion” in science, hopefully are ending and the more responsible and professional methods of investigation and Research are to be now used and taught to our students.

    • Vio Phile

      I’m getting tired of this all scientists are ignorant rant. What is your explanation of this phenomena then. And why is your opinion superior than the scientists that actually know something about something.

      • georgehants

        Vio Phile, do you have a problem with anything I have commented above.
        Please put clearly your factual objections.
        I don’t think your ranting is going to help clear up the many problems with science and scientists.
        Just to correct you, I above put “many” scientists and not “all” as you mistakenly did.
        To correct you again there is no “opinion” in my comment only clear Facts

      • GreenWin

        Clearly ALL scientists are not ignorant – or corrupt. But many scientists behave like sheeple, towing the orthodox barge. This is due to career concerns and funding. When we return to independent research & funding, and round up the corrupt responsible for debacles like hot fusion, suppression of CF, and AGW – public respect for mainstream science may climb above ten percent again!

    • AstralProjectee

      I think the problem is that no truth has really been able to smack mainstream scientists straight, thus it’s become too prideful of it’s ignorance, that shows sometimes. And I of course don’t mean a literal smack, but a metaphorical one. At least this has not happened in the last couple of decades, but with something like cold fusion or similar that would make them think twice before they become the creator and perpetrators of ignorance. I mean they were the ones that supposedly debunked it, so it’s their fault. Their the ones doing the bad science. Cold fusion would be perfect to change the automatic ranting, and the dogmatic propaganda that come from the scientific community at times.

  • Obvious

    Gets popcorn…

  • Obvious

    Gets popcorn…

  • Vio Phile

    Why was my comment to georgehants censored?

    • Frank Acland

      Hi, I didn’t change anything in it — I approved it as it was submitted.

  • georgehants

    Vio Phile, do you have a problem with anything I have commented above.
    Please put clearly your factual objections.
    I don’t think your ranting is going to help clear up the many problems with science and scientists.
    Just to correct you, I above put “many” scientists and not “all” as you mistakenly did.

  • Ophelia Rump

    Congratulations you have discovered the Rijke Tube, heat engine.
    This is an amazing heat engine, like the Stirling engine from a single sealed tube with some heated material in one end and a piston at the other, the piston is the only moving part.

    http://en.wikipedia.org/wiki/Rijke_tube

  • Ophelia Rump

    Congratulations you have discovered the Rijke Tube, heat engine.
    This is an amazing heat engine, like the Stirling engine from a single sealed tube with some heated material in one end and a piston at the other, the piston is the only moving part.

    http://en.wikipedia.org/wiki/Rijke_tube

    I am sincere in my congratulations, someone open and questioning will discover many things, most of which are already known to others but the discovery is no less their own for that.

    An unquestioning dullard can see the most amazing things and never discover anything at all from it.

    In short you have a good attitude, good hunting!

  • AdrianAshfield

    It is actually a Sondhauss tube (a tube closed at one end) making a1/4 wave resonator. The Rijke tube give a half wave. Both operate for much the same reason.

  • ecatworld

    Hi, I didn’t change anything in it — I approved it as it was submitted.

  • GreenWin

    Clearly ALL scientists are not ignorant – or corrupt. But many scientists behave like sheeple, towing the orthodox barge. This is due to career concerns and funding. When we return to independent research & funding, and round up the corrupt responsible for debacles like hot fusion, suppression of CF, and AGW – public respect for mainstream science may climb above ten percent again!

    • Sanjeev

      If you wind a coil at the top and place magnets around it, you will get electricity !
      Instant heat to electricity conversion with spare heat….it can be used, whatever it is.

  • nickec

    I wonder what a wire coil wrapped around the system might show? Such a coil might detect moving charge. This is, of course, pure conjecture.

    • Ophelia Rump

      It is actually a standing wave front which oscillates at high frequency, if I am not mistaken.
      Now if that standing wave occured in a suspension of magnetic particles you could very well design a generator like that. Straight from heat to electric, I believe there is a Danish or Swedish company that makes them for geothermal to electric conversion.

      I believe they just oscillate a large magnet, like a piston.

  • nickec

    I wonder what a wire coil wrapped around the system might show? Such a coil might detect moving charge. This is, of course, pure conjecture.

    • Ophelia Rump

      It is actually a standing wave front which oscillates at high frequency, if I am not mistaken.
      Now if that standing wave occured in a suspension of magnetic particles you could very well design a generator like that. Straight from heat to electric, I believe there is a Danish or Swedish company that makes them for geothermal to electric conversion.

      I believe they just oscillate a large magnet, like a piston.

  • dickyaesta

    Found this pdf link interesting in explaining and visualizing the Rijke Tube as Thermoacoustic Energy Converter: http://ecs.utdallas.edu/news-events/events/deanspong/documents/Experiments%20with%20Rijke%20Tubes-%20Investigating%20Thermoacoustic%20Dynamics%20and%20Control.pdf

  • dickyaesta

    Found this pdf link interesting in explaining and visualizing the Rijke Tube as Thermoacoustic Energy Converter: http://ecs.utdallas.edu/news-events/events/deanspong/documents/Experiments%20with%20Rijke%20Tubes-%20Investigating%20Thermoacoustic%20Dynamics%20and%20Control.pdf

  • MMK
  • Sanjeev

    If you wind a coil at the top and place magnets around it, you will get electricity !
    Instant heat to electricity conversion with spare heat….it can be used, whatever it is.