Call for Independent Verification.                                         Latest change 2025-11-03

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History:
The most peculiar phenomenon in my pendulum is that it shows an elliptical path which periodically changes its rotational direction, and that these changes are synchronous with the North-South and East-West transitions of the swinging plane.
Above all, when the rotational direction of the ellipse is kicked to “the other way” it restores itself within a few hours.
I have contacted prof. Reinard Schumacher (*) about this and in his enthousianism he started developing a computer simulation of these effects which now seems to confirm the effects at least partly.

Current situation: (2025-05-31)
As I am currently the only one who has seen and reported these effects in a real pendulum, we are looking for someone else who can and will repeat such experiments.

What is needed:
 - A Foucault pendulum which can run uninterrupted for many days and shows the Foucault Precession for its location whithin a margin of some 5%.
 - This pendulum should not be a very long one, say a few meters, because very long pendulums might show such effects much weaker.
 - The pendulum should not have means to reduce ellipse growth, like a Charron ring or Eddy curent damping, although it might be interresting to see what happens if such means are operative.
 - Preferably it should use the electro-magnetic repelling drive method described by Schumacher (*) but other drive methods are welcome too.
 - A facility to monitor the dimensions and angles of the major and minor axis of the elliptical path on a per swing base, and log these data for several consecutive days. (A kit with electronic circuits and software to do that is available now)

How can I help:
- Supply all needed information, in particular about the way I measure and log the behaviour of my pendulum.  Most of this is already on the website here. Ask me if you need more info or if things are not clear.
- Make the kit with electronics available soon (done nov ´25) Even if you dont use it reading the docs may provide a lot of information.

What are the rewards:
- The joy of having contributed to some new insights in Newtonian dynamics.


(*)   Schumacher (download) derives that when a repelling impulse is given at the right moment, the precession due to the elliptical path can be eliminated completely.