fulgurites

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#1093

From: Mark C. O'Connor
Date: Sun, 02 Oct 1994 16:57

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The lightning-fused rocks are called fulgurites.  Mt. Thielsen in the
Cascades is noted for them.  (see Stepehen Haris, Fire Mountains of the
West).
Re  lab interface tools for computers.  Our school has Sensor Net (From
Accu-Lab, Ken lEw and Assoc., Palo Alto, CA).  You can attach a variety of
devices to the interface box, from pH probes, temp. probes, pulse monitors,
even Vernier's Smart Pulley and Pasco's photogates.  The software is
super-easy and version 2 supports Mac's System 7 "quicktime" movies.  They'd
be worth comparing to Vernier (who seem to make excellent stuff) and I'm
sure Ken Lew will be at NSTA

Mark O'Connor, Yreka HS, Yreka, CA

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Subject: fulgurites
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