Mmm if it has no net charge (not sure what you mean by "wrt earth ground" BTW, "no net charge" is absolute, zero Coulomb, unlike voltage which may be what you meant), why do you expect a force wrt a charged body?
Michel ----- Original Message ----- From: "Frederick Sparber" <[EMAIL PROTECTED]> To: "vortex-l" <[email protected]> Sent: Saturday, January 27, 2007 4:43 PM Subject: RE: [Vo]: Re: Re Van de Graaf Antics > > Oops, make that the reported "0.5 to 1.0 MegaCoulombs excess negative > charge of the earth". > > I gather it's split between the surface and the positive charge of the > ionosphere. > > Fred > >> [Original Message] >> From: Frederick Sparber <[EMAIL PROTECTED]> >> To: <[email protected]> >> Date: 1/27/2007 8:17:14 AM >> Subject: RE: [Vo]: Re: Re Van de Graaf Antics >> >> Michel Jullian wrote. >> > >> > Nice experiment Fred! Wrt the weight changes, it behaves qualitatively > as >> expected doesn't it? >> > >> Thanks. Yes the "leakage" around the room and ion wind is pronounced too. >> > >> > Did the discharge hurt a lot? >> > >> No, just startles you. >> I'm practicing with it so I can see if the VDG can pump charge between >> an inner chamber and an outer shell of a "lifter/spacecraft" with >> putatively no >> net charge wrt earth ground, to see if it will exert a force on the > reported >> "0.5 to 1.0 megajoule excess negative charge of the earth". >> >> Fred >> >> > >> > Michel >> > >> > ----- Original Message ----- >> > From: "Frederick Sparber" <[EMAIL PROTECTED]> >> > To: <[email protected]> >> > Sent: Saturday, January 27, 2007 1:29 PM >> > Subject: [Vo]: Re Van de Graaf Antics >> > >> > >> > >A recently acquired Acculab VIC 10KG digital scale (10,100 grams) >> > > with +/- 1.0 gram resolution and a Science First >> > > model 10-060 (200 KV) Van de Graaff generator which specifies >> > > a "Positively Charged Sphere", with a how it works explanation, >> > > makes for some interesting endeavors. >> > > >> > > Setting the VDG on the scale (sitting on a throw rug on a carpeted >> floor) >> > > shows a weight of 1509 grams. >> > > When the VDG is running the weight increases to 1512 grams, and when >> > > a ~ 2 ft square aluminum sheet is held flat about 4 inches above the >> globe >> > > the reading drops to 1490 grams until it sparks through me and goes >> back up >> > > to 1511 grams. It seems like the whole room is electrified along with >> > > the smell of ozone. >> > > >> > > I had planned set it on the scale with it sitting atop an aluminum > foil >> sheet laying >> > > on a 3 inch thick Styrofoam plank and using a bank of D batteries >> > > feeding an inverter feeding the scale and VDG >> > > so it can "pump" electrons between the globe and the >> > > foil so that there wouldn't' be any net charge on the setup wrt > ground, >> > > and watching for weight change when a grounded sheet of >> > > aluminum foil is held above the globe. However... suggestions??? >> > > >> > > Fred >> >> > > >
