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From: Michael A. Terrell on 4 Mar 2010 17:08

whit3rd wrote:
>
> On Mar 4, 12:29 am, Robert Baer <robertb...(a)localnet.com> wrote:
>
> > Is this the start of creating a (spherical) force field, similar to
> > that alluded to in some SF stories?
> > In short, how close are we to doing anything like that NOW?
>
> It's a common commercial item. Called a 'ball bearing', sphericity
> is available in high accuracy, forces on the exterior can be quite
> high without causing any distortion.
>
> Of course, in SF stories, sometimes there's a force field that
> has lots of other properties than 'spherical'. Like, the field is
> bigger than the generator, it turns ON and OFF easily... stuff
> like that.


May the farce be with you! ;-)


--
Greed is the root of all eBay.
From: George Herold on 4 Mar 2010 21:00
On Mar 3, 10:52 pm, The Great Attractor
<Sup...(a)ssiveBlackHoleAtTheCenterOfTheMilkyWayGalaxy.org> wrote:
> On Wed, 03 Mar 2010 14:38:30 +0000, Dirk Bruere at NeoPax
>
> <dirk.bru...(a)gmail.com> wrote:
> >On 03/03/2010 07:34, Ken Weston wrote:
> >> What type of coil geometry would be required to create (or best
> >> approximate) a contained, 1 metre diameter, spherical EM field of
> >> several millgauss?
>
> >> Thanks for any suggestions.
>
> >> Ken Weston
>
> >Well, choose a spherical container made of iron or mu-metal.
> >Because otherwise magnetic fields propagate to infinity
> >If you want uniformity, that is an additional impossibility.
>
>   I am sure that magnetic and electromagnetic planetoids not orbiting any
> nearby star would have a fairly spherical flux/field propagation.  It
> would have to be pretty far away though.

Dang, do you have anything useful to say?

George H.
From: krw on 4 Mar 2010 21:28
On Thu, 4 Mar 2010 18:00:45 -0800 (PST), George Herold <ggherold(a)gmail.com>
wrote:

>On Mar 3, 10:52�pm, The Great Attractor
><Sup...(a)ssiveBlackHoleAtTheCenterOfTheMilkyWayGalaxy.org> wrote:
>> On Wed, 03 Mar 2010 14:38:30 +0000, Dirk Bruere at NeoPax
>>
>> <dirk.bru...(a)gmail.com> wrote:
>> >On 03/03/2010 07:34, Ken Weston wrote:
>> >> What type of coil geometry would be required to create (or best
>> >> approximate) a contained, 1 metre diameter, spherical EM field of
>> >> several millgauss?
>>
>> >> Thanks for any suggestions.
>>
>> >> Ken Weston
>>
>> >Well, choose a spherical container made of iron or mu-metal.
>> >Because otherwise magnetic fields propagate to infinity
>> >If you want uniformity, that is an additional impossibility.
>>
>> � I am sure that magnetic and electromagnetic planetoids not orbiting any
>> nearby star would have a fairly spherical flux/field propagation. �It
>> would have to be pretty far away though.
>
>Dang, do you have anything useful to say?

If you find wrong to be useful.

From: John Larkin on 5 Mar 2010 13:36
On Thu, 04 Mar 2010 20:28:44 -0600, "krw(a)att.bizzzzzzzzzzzz"
<krw(a)att.bizzzzzzzzzzzz> wrote:

>On Thu, 4 Mar 2010 18:00:45 -0800 (PST), George Herold <ggherold(a)gmail.com>
>wrote:
>
>>On Mar 3, 10:52�pm, The Great Attractor
>><Sup...(a)ssiveBlackHoleAtTheCenterOfTheMilkyWayGalaxy.org> wrote:
>>> On Wed, 03 Mar 2010 14:38:30 +0000, Dirk Bruere at NeoPax
>>>
>>> <dirk.bru...(a)gmail.com> wrote:
>>> >On 03/03/2010 07:34, Ken Weston wrote:
>>> >> What type of coil geometry would be required to create (or best
>>> >> approximate) a contained, 1 metre diameter, spherical EM field of
>>> >> several millgauss?
>>>
>>> >> Thanks for any suggestions.
>>>
>>> >> Ken Weston
>>>
>>> >Well, choose a spherical container made of iron or mu-metal.
>>> >Because otherwise magnetic fields propagate to infinity
>>> >If you want uniformity, that is an additional impossibility.
>>>
>>> � I am sure that magnetic and electromagnetic planetoids not orbiting any
>>> nearby star would have a fairly spherical flux/field propagation. �It
>>> would have to be pretty far away though.
>>
>>Dang, do you have anything useful to say?
>
>If you find wrong to be useful.

Knowing that someone is always, absolutely, 100% wrong *is* useful.

John

From: Paul Hovnanian P.E. on 5 Mar 2010 20:01
Dave Platt wrote:
>
> In article <2ktso5pli2bs2n0kvetfnp4psps4ib9qv0(a)4ax.com>,
> John Larkin <jjlarkin(a)highNOTlandTHIStechnologyPART.com> wrote:
>
> >Is there such a thing as a spherical magnetic field? Where would all
> >the vectors point?
>
> It could be done with isolated magnetic monopoles, I suppose.
> Unfortunately, they seem to be out of stock at all of the popular
> suppliers, and I have my doubt whether the brokors who post at
> DigElementaryParticles.com can actually deliver.

Jut saw one end off a bar magnet. ;-)

--
Paul Hovnanian mailto:Paul(a)Hovnanian.com
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