Re: pinhole got bismuth?

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From: John or Jan Lahr (johnjan@lahr.org)
Date: Thu Mar 13 2003 - 20:44:28 PST 

Message-Id: <5.1.0.14.2.20030313213352.02e659a8@mail.attbi.com>
Date: Thu, 13 Mar 2003 21:44:28 -0700
From: John or Jan Lahr <johnjan@lahr.org>
Subject: Re: pinhole got bismuth?

It was tricky getting the right lighting and angle, but I managed to get
a photograph of the distortion of the surface of a dish of water by a
magnetic field.

http://jjlahr.com/science/physics/diamag/water/

I think graphite is better than water or bismuth for demonstrating
diamagnetism.
See: http://jjlahr.com/science/physics/diamag/glev/

A good source for graphite is pencil lead.
See: http://jjlahr.com/science/physics/diamag/seismo/

and, in particular: http://jjlahr.com/science/physics/diamag/seismo/leads.html

Also, SciToys (see link below) carries Pyrolytic Graphite, which is highly
diamagnetic, at a very reasonable price.

Cheers,
John Lahr
Golden, CO

At 08:45 AM 3/13/2003, you wrote:
>Here's a site for bismuth that let's you in.
>The last site was secured against referred entry.
>
>http://www.scitoys.com/
>
>Paul D

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