On Wed, 27 Nov 2002, Roman Black wrote: *>I believe these electrostatic/capacitive *>whatever systems ionise the surrounding air and *>push upon it with the "asymetrical" charge. The original subject does not ionize air (it goes to great lengths to do that). It relies on the fact that strongly polarised gas (air) suffers changes in density during polarisation with DC. What exactly is going on seems to elude the inventors. *>In space there will be no matter to push against *>and it won't work. :o) I aggree. *>There are a couple of inertial systems out there *>claiming to produce thrust but AFAIK none have *>passed the critical "pendulum test" yet. What is that ? Peter -- http://www.piclist.com hint: PICList Posts must start with ONE topic: [PIC]:,[SX]:,[AVR]: ->uP ONLY! [EE]:,[OT]: ->Other [BUY]:,[AD]: ->Ads