David Jonsson wrote:
If someone knows about such experiments please send me references.
The leading expert in this field is Friedwardt Winterberg, now a professor at U. Nevada, Reno.
Most of his publications are in the German Language in Zeitschrift für Naturforschung, etc. but there should be a listing on his faculty page, or here, for the information you need.
http://en.wikipedia.org/wiki/Friedwardt_Winterberg faculty page: http://physics.unr.edu/faculty/winterberg/
