Gord_in_Toronto
Penultimate Amazing
- Joined
- Jul 22, 2006
- Messages
- 26,457
What struck me about the article was how elaborately they investigated any possible physics means of influencing the recorder and how quickly, and vaguely, they rule out trickery.
In this case: What mechanical restraints are they talking about?
Unfortunately the article as posted by Kuko is missing several pages.
Page 119:
[NB:this only talks about one specific recording!]
"Ein Betrachter, der die Vorgeschichte der Messstreifen nicht kennt, würde zu dem Schluss kommen, dass die Ausschläge eher durch Führen der Schreiberfeder mit der Hand als durch elektrische Einwirkung zustande gekommen seien."
My translation:
"An observer who does not know the previous history of the chart recording would come to the conclusion that the spikes have come to be by leading the writing pen with a hand rather than by electrical influence."
Furthermore, they seem to be making the implicit assumption that all recorded spikes should have the same cause. Yet it does seem quite plausible that, assuming trickery, that only a part of the spikes was caused by manually leading the pen, but those spikes which were witnessed in the making by different means.
On the diagram we can see that the chart recorder and the oscillograph were placed in different rooms. This would seem to make various manipulations possible which could potentially explain discongruent readings.
The lack of explicit attempts to catch lo-tech human manipulation constitutes a serious omission. One can excuse the physicists insofar as they were tasked with finding a fault in the electrical grid while it would have been up to the police to catch fraudulent manipulation. Still, given that omission, the conclusions Karger and Zicha draw are quite unwarranted.
Thank you GnaGnaMan. This confirms what I said in my previous post, that the description "arouse(d) a degree of suspicion in my mind".
And welcome to the Forum!