Re: pinhole Re: grain elevator and questions

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From: Paul Doherty (pauld@exploratorium.edu)
Date: Wed Dec 18 2002 - 09:44:33 PST 

Message-Id: <l03110719ba26638ceded@[192.174.3.125]>
Date: Wed, 18 Dec 2002 09:44:33 -0800
From: Paul Doherty <pauld@exploratorium.edu>
Subject: Re: pinhole Re: grain elevator and questions

Note

The Exploratorium used to have a beatiful plasma artwork named "Quiet
Lightning"
A basketball sized glass sphere with plasma arcs inside it that responded
to the presence of human conductors.

This summer on a hot day the glass imploded with a whomp.
No one was near the exhibit at the time.

Summer institute teachers rushed to the scene of the explosion and kept
visitors away from the glass and high voltage until the Exploratorium clean
up team arrived.

This was one of the first plasma spheres ever made. The exhibit was
developed by Artist in Residence Bill Parker at the Exploratorium.

We put the word out to other museums to watch out for catastrophic failure
of their plasma spheres.

Paul D

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