In a message dated 2/15/00 11:29:00 AM Pacific Standard Time, rcbaker@............. writes: > > (The last issue of SAS described a super-sensitive technique for the > detection of trace organics. My next > Science Hacker column will be a description of progress in building an > amateur vibrating probe scanning microscope, using tiny mica flakes as > reflective cantilevers). > > Hello My method is trying to balance such things as heat and unwanted vibrations from geophones that do not have their coils offset by DC voltages by the geophone element with the offset coil. This is simple and I have got it sensitive enough to observe earth tides. I have eight patents for geophones or geophone testing equipment. Most were patented during my occupation with an oil company rersearch department, so the patents belong to them. I now would like to study the effects of local gravity changes as a possible precurser to local seismic events. George Erich Seismic Exploration Consultant P. O. Box 2011, Norwalk, CA 90651, U. S. A Phone (562) 868-6013 e-mail GeE777@....... 33 53.90N 118 04.53W http://hometown.aol.com/gee777/myhomepage/profile.html _____________________________________________________________________ Public Seismic Network Mailing List (PSN-L)
Larry Cochrane <cochrane@..............>