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From: nivek@rover.ri.cmu.edu.UUCP
Newsgroups: sci.electronics
Subject: Superconductor Kits
Message-ID: <1037@rover.ri.cmu.edu>
Date: Thu, 17-Sep-87 16:13:12 EDT
Article-I.D.: rover.1037
Posted: Thu Sep 17 16:13:12 1987
Date-Received: Sat, 19-Sep-87 09:45:25 EDT
Organization: Carnegie-Mellon University, CS/RI
Lines: 19

For you other rabid technophiles out there, Edmund Scientific now
offers a superconducting disc. For $20 you can have a disc (made by
Tektronix) to demonstrate the Meissner effect with the use of a magnet
and some liquid nitrogen (available from a variety of sources including
the corridors of Wean Hall). The small but powerful magnets from headphones
should work well but Edmund sells them too. Page 5 of their latest Annual 
Reference Catalog.

If you're really gung ho you can by some Yttrium oxide, Barium oxide, copper 
oxide and cook your own. I think a recent issue of Nature (or Science) gave
a basic recipe...

					nivek

Aka :	Kevin Dowling		Bell:	(412) 268-8830
Arpa:	nivek@rover.ri.cmu.edu	Mail:	Robotics Institute
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