On 08/26/2016 06:31 PM, David Roberson wrote:
I am referring to the famous HotCat test where the three scientists wrote a nice long report. I believe it was the last demonstration before the year long test. Perhaps someone can find the exact reference, but it has been a while now. Jed, give me a hand here.


Thanks -- this actually sounds interesting. I had long since stopped following Rossi at that point (after concluding that his tests four or five years back were clearly fraudulent) and so I missed it.

If you can find a report on it I'd appreciate it. No rush, though! I have other stuff I'm supposed to be doing tonight, rather than dissecting one of Rossi's old tests.

Anyhow I'd actually find deconstructing that a lot more interesting than deconstructing the year-long test. If you know of a paper on it, with things like graphs and tables and actual data, that would be great.

(For the record I do not doubt that the test took place! I doubt the results were as they appeared, but that's something else again, and it's based on the Uri Geller effect -- once someone is proved a liar I doubt everything they say, so if Uri Geller claims something now, I doubt it's true. If he does a demo for some scientists, and they believe it's all true, I doubt they're right. But that doesn't mean it's not interesting to go over it and try to find the glitches.)

It was well publicized and included a several day period during which the output was set to a fixed power. During the test the input power being supplied to the device was slowly dropping as presumably more excess power was being generated. A temperature sensor was attached to one end of the device which fed back that information into his control box. Does this ring any bells?

I suppose we can search further if you really doubt that the test took place. I feel a bit lazy at the moment.

Dave



-----Original Message-----
From: Stephen A. Lawrence <sa...@pobox.com>
To: vortex-l <vortex-l@eskimo.com>
Sent: Fri, Aug 26, 2016 5:59 pm
Subject: Re: [Vo]:Interesting Steam Calculation



On 08/26/2016 05:40 PM, David Roberson wrote:

I recall Rossi discussing power control on numerous occasions. Why would he hire control experts if that were not the reason?


I don't know why he does anything. I was asking for a specific assertion. AFAIK he never made such an assertion.


    Do you think that anyone would have taken him seriously for any
    significant period of time had he not discussed that issue?


People who looked seriously at his output power curves stopped taking him seriously years ago. So, this objection is not relevant.

    It seems a bit unfair for anyone to state that Rossi runs his
    systems open loop especially when you should recall the HotCat
    test performed by respected scientists.  They took notes which
    clearly showed the input power being throttled back in time as the
    output power was maintained at a constant level.  This is the
    obvious finger print of negative feedback.


No, I recall no such thing. In fact Rossi did indeed supposedly run his demos open loop four or five years ago. He set the input power to a fixed value and then showed the output power ramping up to a value several times the input.

And this appears to be the same, exact system, just replicated many times. So, the assumption that there's feedback in it now seems unsupported, just like the assertion that there's a recirc pump which is pulling the pressure below 1 atm at the other end of the steam pipe.

And no, I don't recall any clear report by independent parties that the input power was definitely throttled back while the output power remained fixed. Please give a specific example -- I really recall no such thing.

There were a handful of more or less independent tests; presumably you have one in mind. Which?



    Dave



    -----Original Message-----
    From: Stephen A. Lawrence <sa...@pobox.com>
    To: vortex-l <vortex-l@eskimo.com>
    Sent: Fri, Aug 26, 2016 4:17 pm
    Subject: Re: [Vo]:Interesting Steam Calculation



    On 08/23/2016 12:27 AM, David Roberson wrote:
    > Rossi is using a feedback system to control the heating of his
    modules

    Is this known to be a fact? Has Rossi actually described in some
    reasonably clear way, rather than just giving a handwave to a leading
    question about feedback?

    Where does this information come from? What was the feedback
    parameter
    (i.e., what temperature probes were used) and what, exactly, did it
    control, and how?

    I know a lot of people have assumed this, but I have never seen it
    stated as a fact, and I have never seen it claimed by Rossi.



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