I tried adding some thin iron sheet. It only weakened the magnetic field
and I could no longer levitate the pyrographite.

Bob

On Mon, Jul 9, 2012 at 12:34 PM,  wrote:

> From: Bob McClure bobmcclure90@.........
> Sent: Mon, 9 Jul 2012 15:02
> Subject: Re: diamagnetic levitation seismometer possibility
>   Hi Randall,
>
> I, too, have carried out diamagnetic levitation experiments similar to
> those by Meredith Lamb. Although the large amplitude motion looks smooth
> and frictionless, what I concluded for very small amplitudes, such is not
> the case. The supporting magnetic field has small-scale roughness, and the
> levitated graphite tends to hung up in the hills and valleys of the
> resulting force.
>
> Hi Bob,
>
>     Did you ever try putting a transformer lamination on top of the
> magnets to smooth out any field irregularities ?
>     Regards,
>     Chris Chapman
>
>
>
I tried adding some thin iron=
 sheet. It only weakened the magnetic field and I could no longer levitate =
the pyrographite.



Bob<=
br>
On Mon, Jul 9, 2012 at 12:3=
4 PM,  <chrisatupw@.......> wrote:



From: Bob McClure bobmcclure90@.........

Sent: Mon, 9 Jul 2012 15:02

Subject: Re: diamagnetic levitation seismometer possibility













Hi Randall,

=C2=A0

I, too, have carried out diamagnetic levitation experiments similar to=
 those by Meredith Lamb. Although the large amplitude motion looks smooth a=
nd frictionless, what I concluded for very small amplitudes, such is not th=
e case. The supporting magnetic field has small-scale roughness, and the le=
vitated graphite tends to hung up in the hills and valleys of the resulting=
 force. 







Hi Bob, 

=C2=A0

=C2=A0=C2=A0=C2=A0 Did you ever try putting a transfo=
rmer lamination on top of the magnets to smooth out any field irregularitie=
s ? 

=C2=A0=C2=A0=C2=A0 Regards, 

=C2=A0=C2=A0=C2=A0 Chris Chapman

=C2=A0

=C2=A0



=20