If you check carefully, Steorn uses two magnets to help make the field homogeneous.
On Thu, Dec 31, 2009 at 7:56 PM, Harry Veeder <[email protected]> wrote: > > > > > ----- Original Message ---- >> From: William Beaty <[email protected]> >> To: [email protected] >> Sent: Thu, December 31, 2009 4:36:48 AM >> Subject: Re: [Vo]:Steorn Replication >> >> On Wed, 30 Dec 2009, Craig Haynie wrote: >> >> > By moving a magnetic field across a conductor, don't we get induction, >> > and hence, electricity? >> >> Not in a toroid inductor with unsaturated core. The ring-shape core will >> shield >> the inductor against fields coming from nearby magnets. > > For no induction to happen, wouldn't this also require that the magnetic > field (of the permanent magnet) be entirely uniform as experienced by the > torriod? > > Harry > > > __________________________________________________________________ > Make your browsing faster, safer, and easier with the new Internet Explorer® > 8. Optimized for Yahoo! Get it Now for Free! at > http://downloads.yahoo.com/ca/internetexplorer/ > >

