PSN-L Email List Message

Subject: Re: A Sunday levitating neodymium
From: Edward Cranswick cranswick@........
Date: Mon, 27 Sep 1999 22:37:37 -0600


Meredith-
    Belatedly checked out your website which graphicly (graphitely?) brought
home to me that I, in my techno-myopia, have blithely missed this whole
business of diagmagnetic phenomena which has blossomed in front of me on the
PSN-L: why be here and now when I can be in Turkey 5 weeks ago?
    I'll grab John in the hall and get him to force-feed me on magnetic
developments; the human brain is still the best random-access device around.

-Edward
PS. I didn't know you guys were so religous on Sundays.

meredithlamb@.............. wrote:

> Hi All,
>
> Lee Ann and I were invited over to John and Jan Lahr's
> to explore stable/static diagmagnetic levitation today.
> John has built afew devices, and we used acouple to
> test out a variety of neodymium magnets of various
> sizes and shapes; and also a variety of graphite/carbon
> DC motor commutator brushes, for their effects.
>
> While we primarily tried a number of brushes, we were
> also easily able to levitate about 5 different neodymium
> magnets of different shapes and sizes relatively easily.
> My preconception of difficulty in adjustments went out
> the window.  Thus far, the magnet size limit seemed to
> be having enough diagmagnetic material to cover above
> and below the magnets.  The largest piece was about
> 3/4" long by about 3/8's" wide, by around 1/16" thick.
>
> It was a most interesting afternoon.  I whomped up a
> fast web page for those interested in diagmagnetics;
> but without alot of details.
>
> http://www.users.uswest.net/~mlamb1/index.html
>
> Thanks John and Jan for all the effort and demonstrations,
> it was very, very interesting.  It doesn't seem that long
> ago, that the top science news was levitating a magnet on
> a cyrogenic supercooled magnet device....one doesn't need
> that fancy equipment.
>
> Meredith and Lee Ann Lamb
>
>
>
> Signup for your free USWEST.mail Email account http://www.uswestmail.net
>
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--
Edward Cranswick                Tel: 303-273-8609
US Geological Survey, MS 966    Fax: 303-273-8600
PO Box 25046, Federal Center    cranswick@........
Denver, CO 80225-0046  USA      E.M. Forster said, "Only connect".




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Larry Cochrane <cochrane@..............>