The Principle experiment was performed by Paul Baumann during a demonstration with over 30 engineers. Here is the relevant text extracted from a translation by Stefan Hartmann and Hans Holzherr on August 4, 1999.

As Adolf Schneider already mentioned, my colleague Bernhard XXX and I want to try to copy the principle experiment shown by Baumann - without much hope to find anything extraordinary, though. The device consists of a horizontal swiveling plexiglass arm with a small rectangular plexiglass plate at both ends glued to the lower side of the arm. The lower side of the arm is covered with perforated aluminum sheets (square holes), while the bottom of the plates is covered with brass wire mesh. Beneath each plate five additional plates are glued onto the base plate. There is also wire mesh between each pair of plates in the two blocks. From the mesh layer between the lowest plate and the base a wire goes to the two capacitors, which are connected in parallel . Baumann SEIZED the arm with both hands and turned it about ten times back and forth (a full rotation was not possible, because the capacitors were in the way), then measured the DC voltage with a digital measuring instrument: 60 Volts. Then, as he short-circuited the condensers a loud crack could be heard. I donīt know if that already is an abnormal result... On my question Baumann replied that with metal foil (instead of wire mesh) the device would not produce that effect. Picture copyright 1999 by Hans Holzherr. ... After my visit I made a diagram of the 'PRINCIPLE EXPERIMENT' - see the piction below!

Further information - The flattened hemisphere/bell base

What is not generally known and was left out of the above diagram as unimportant was that the base for the arm was a "flattened hemisphere that seemed to be half of an electric bell". The following is from some additional private correspondance. The lines beginning with ">" are questions being asked of the visitor.

> You described capacitors > in front of it. Did these look to be Philips made (blue type) el. caps.? They were about 8 cm high, 3 to 4 cm diameter, and looked like inductrial-type capacitors. There were some other capacitors lying on the table. Baumann said some had been bought, some had been made on the premises - he said it wouldn't matter. > What confuses me is that > this other machine had a horseshoe magnet on the center post and moved over > aluminium containers instead of flat capacitors. Have you herd of this > other type of arm machine before? I didn't see a horseshoe magnet, but what I didn't include in the drawing was a flattened hemisphere that seemed to be half of an electric bell. My friend the ____ felt it didn't have any significance except holding the central post of the arm. I just don't know. Your description is reminiscent of a device my friend's friend once saw. It may have been an even older device. But according to that source, it wasn't a magnet (?), but the arm had an extension at both ends pointing downward and traveling in a circular "trough", not touching it. Maybe that corresponds to the aluminium containers of your source. My friend did that experiment as well without success.

The references above to another arm machine seem to be refering to the panning arm machine or Ruck-Zuck (back and forth) machine.

A little theorizing...

For a long time it was speculated that the source of the high voltage (if needed) for the principle experiment may have been Paul Baumann himself, as it's commonly known that a person can easily build up a charge of 10,000V by walking across a carpet. However, the above new information that a bell shaped base was involved brings up the possibilty that the bell may have acted as a means of charge separation thereby producing a high voltage when the arm was rotated. The same principle used by the top dome of a Van de Graaff generator to collect charge from its belt may be involved. The shaft for the arm could have been metalic and played the part of an electrical conductor. Where the shaft went through the bell it may have been electrically insulated from the bell. The bottom of the shaft, within the bell, could have had a sharp pointed comb electrically attached to it. The points of the comb would have been near, but not touching, the inner surface of the bell. As the shaft and attached arm were rotated, the comb would also rotate and deposit charge on the bell using the Faraday bucket effect, the same effect used by the top dome of a Van de Graaf generator. The result would have been a charge separation between the bell and the grids on the arm, and hence, high voltage.

Also, note that the stack of plates glued to the base, as described above, have a direct correspondance to the tall cans in the panning arm machine. In place of a bell for doing charge separation, the panning arm machine may have gotten its high voltage from the horseshoe magnet, as the Linden experiment leads us to believe the purpose of the magnets to be. A natural evolution would then be to replace the arm with a disk or disks, and voila, we have the testatika machines - disk(s), two large cans (or pots, as Baumann refered to them) and horseshoe magnets. If the magnets tap into some energy source then we can see how the panning arm machine could have been the first self running machine of the Methernithans.

Replication attempts

See here for details of an unsuccessful attempt to replicate this experiment. The original page is in German, so if the above translated version doesn't work, try the original German. You could also try going to altavista's translation website and paste in the address http://www.hcrs.at/TESTA.HTM.