235 lines
11 KiB
Plaintext
235 lines
11 KiB
Plaintext
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| File Name : SPRCND01.ASC | Online Date : 05/22/95 |
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| Contributed by : Jerry Decker | Dir Category : ENERGY |
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| From : KeelyNet BBS | DataLine : (214) 324-3501 |
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| A FREE Alternative Sciences BBS sponsored by Vanguard Sciences |
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| KeelyNet * PO BOX 870716 * Mesquite, Texas * USA * 75187 |
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| Voice/FAX : (214) 324-8741 InterNet - keelynet@ix.netcom.com |
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The following are messages relating to Superconductivity as removed from
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various UseNet groups.
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220 34849 <D8DHu5.Auu@voder.nsc.com> article
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Newsgroups: sci.energy
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From: dan@quark.nsc.com (Dan Hariton x5596)
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Subject: Re: Super Conductor Progress
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Organization: National Semiconductor Corporation
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References: <3oe0uv$2op@news.halcyon.com>
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Date: Wed, 10 May 1995 17:27:40 GMT
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Lines: 47
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and at what temperature may this tape supeconduct ?
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dan
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PS. I have read this announcement in the press myself and no mention was made
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of the temp range.
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In article <3oe0uv$2op@news.halcyon.com>, slough@halcyon.com writes:
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|> I cant believe that this has been over the net and
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|> I have missed it, but I think it is important enough
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|> to re POST it.
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|> - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
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|> This is paraphrased from a N.Y., Times News Service
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|>
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|> New Tape from Los Alamos promises Miracles
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|>
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|> Dated April 20th, 95:
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|>
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|> The dream of manufacturing superconducting cables, without resistance, has
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come closer to realization, because of new technology unveiled Tuesday by
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the Los Alamos National Labs. ...The Tape can carry up to one million
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amperes of current per square centimeter of cross section.
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|> By comparison, ordinary copper wire of the same thickness carries less than
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800 amperes. Although Los Alamos has been working on superconducting tape
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for the last year, Peterson said, the breakthrough reported Tuesday was
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achieved only during the last month.
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|> Los Alamos withheld disclosure, of its achievement until Tuesday, Peterson,
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said, to give the laboratory time to seek patent protection.
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|> - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
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|> ***************************************************
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|> From the Key Board of:
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|> Steven Lough, Pres
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|> Eco-Motion Electric Cars
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|> Seattle (206) 524-1351
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|> E-Mail slough@halcyon.com
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|> Web Home Page (check it out)
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http://cyberzine.org/html/Electric/ecomotion.html
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|> "To convert a gas car to electric, is the highest form of re-cycling.."
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|> ***************************************************
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From: sky-tech@inet.uni-c.dk (Jorgen Skyt)
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Subject: Re: Hoverboard
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Date: 11 May 1995 01:55:06 GMT
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Organization: News Server at UNI-C, Danish Computing Centre for Research and
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Education.
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Lines: 30
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Michael Kagalenko (mkagalen@lynx.dac.neu.edu) wrote:
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Star Fire <71533.1302@CompuServe.COM> wrote:
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:]MC> >I've heard of an invention called a hoverboard that works on magnets
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:]MC> >and it can hover over any surface except water. Does this really work?
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: I use the older model right now, Ultra-Sigma-gizmotron XLIIVI-bis,
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: to hover above the chair as I type.
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: And those coils are powered by cold-fusion cells. Very neat thing.
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he, he! Are they really still working? I remember the gizmotron from my
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schooldays. Most peoble didn't beleive in it, but I sure was popular by
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the chicks - others guys new only of the "waterbed". tsk, tsk! :-)
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But - really - you must all know, that if you place an aluminum sheet on top
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of a powerfull electromagnet going several hundred hertz, the AL-sheet will
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levitate. This is due to the electric current inducted in the metal. This will
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work in any metal or salt-solution, with different results of course. So
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shortly: It IS possible to levitate an electromagnet above seawater, but you'd
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probably need a very powerful sine-generator. I haven't tried it yet, but I'm
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working on the idea.
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Joergen Skyt
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Denmark
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: --
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: Save the Earth - kill a lawyer
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------------------------------------------------------------------------------
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From: root@localhost.com (Phil Storm)
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Subject: Re: Hoverboard
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Date: 8 May 1995 03:35:52 GMT
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Organization: Interdictor
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Lines: 30
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becker@hal4.usm.uni-muenchen.de wrote:
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: In article <3o9g7a$528@cantua.canterbury.ac.nz>,
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physjcw@phys.canterbury.ac.nz (Miss J C Williams) writes:
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: >
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: >Cool. But in reality isn't there supposed to be some sort of magnetic
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: >thing that some Japanese trains use?
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: >
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: Yep, but that is for real and you need rails (can't go just anywhere as you
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: could with the Back To The Future special effect thingy). The magnet
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: trains are working a bit like a hovercraft: the hovercraft creates an
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: air cushion underneath which reduces friction and thus can move forward
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: using relatively little energy - the magnet trains use the repulsion of
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: two equal magnetic poles to lift the train up a bit and again reduce
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friction
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: to a minimum. Then you need some sort of propulsion to get the thing to
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: move but you need less energy and can reach higher speeds than with an
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: ordinary train on ordinary rails (I shudder to think what a power cut would
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do to the thing, though)
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actually, they use superconductors and magnets..
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: Have fun
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: Sylvia
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: --
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: Dr. Sylvia R. Becker | Phone: +49 89 922094 39
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: Universitaetssternwarte Muenchen | Fax: +49 89 922094 27
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: Scheinerstr. 1 | e-mail: becker@usm.uni-muenchen.de
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: D-81679 Muenchen, Germany
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------------------------------------------------------------------------------
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From: h28@zwager.nikhef.nl (Andres Kruse)
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Newsgroups: sci.physics.electromag,sci.physics,sci.physics.accelerators
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Subject: Re: Hoverboard
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Date: 8 May 95 13:50:01 GMT
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Sender: news@nikhef.nl
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Distribution: world
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Lines: 33
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In-reply-to: mkagalen@lynx.dac.neu.edu's message of 5 May 95 01:23:30 GMT
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Xref: ix.netcom.com sci.physics.electromag:4237 sci.physics:114208
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sci.physics.accelerators:1417
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In article <3obumi$255@lynx.dac.neu.edu> mkagalen@lynx.dac.neu.edu (Michael
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Kagalenko) writes:
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<becker@hal4.usm.uni-muenchen.de> wrote:
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]>
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] Yep, but that is for real and you need rails (can't go just anywhere as you
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] could with the Back To The Future special effect thingy). The magnet
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] trains are working a bit like a hovercraft: the hovercraft creates an
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] air cushion underneath which reduces friction and thus can move forward
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] using relatively little energy - the magnet trains use the repulsion of
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] two equal magnetic poles to lift the train up a bit and again reduce
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friction
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] to a minimum. Then you need some sort of propulsion to get the thing to
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] move but you need less energy and can reach higher speeds than with an
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] ordinary train on ordinary rails (I shudder to think what a power cut would
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do to the thing, though)
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Don't you think that engineers are stupid, please. These trains have wheels
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for the event of a mishap with magnets. It is wrong to create unfounded
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fears about technology, there're enough of them already.
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I'm not sure if they really all have wheels. I think that the most advanced
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german magnet train 'Transrapid' does not have wheels. In fact it will do an
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emergency break by simply switching off the magnetic field and touching down
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on the rails.
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I've once seen this in a film about these trains: A huge cloud of smoke is
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produced but the train breaks pretty efficiently down from >500 km/h to
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zero.... I suspect that they have some airbag system to avoid pancaking the
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passengers.
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--
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Save the Earth - kill a lawyer
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-- Andres (A.Kruse@nikhef.nl)
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------------------------------------------------------------------------------
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From: root@localhost.com (Phil Storm)
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Newsgroups: sci.physics.electromag
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Subject: superconductors
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Date: 8 May 1995 23:10:42 GMT
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Organization: Interdictor
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Lines: 8
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Besides Titanium, Vanadium, Zirconium, Niobium, Hafnium, Tantalum,
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Thorium, Uranium, Lanthanum, Rhenium, Osmium, Zinc, Cadmium, Mercury,
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Aluminum, Gallium, Indium, Thallium, Tin, Lead, and Ytrium Barium
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Copper Oxide, what other stuff out there is Superconducting....?
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And whats their critical temperature too?
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From: neufeld@caliban.physics.utoronto.ca (Christopher Neufeld)
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Subject: Re: superconductors
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Sender: news@info.physics.utoronto.ca (System Administrator)
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Reply-To: neufeld@physics.utoronto.ca
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Organization: University of Toronto - Dept. of Physics
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Date: Thu, 11 May 1995 16:25:42 GMT
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Lines: 13
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In article <3om8di$lo4@msunews.cl.msu.edu>,
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Phil Storm <root@localhost.com> wrote:
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>
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> Besides [ ... ] what other stuff out there is Superconducting....?
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>
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Look in any recent CRC Handbook, there's a table of superconducting alloys
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and their properties. There may not be much about the high-Tc materials.
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--
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Christopher Neufeld....Just a graduate student neufeld@physics.utoronto.ca
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Home page: http://caliban.physics.utoronto.ca/neufeld/Intro.html
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"Don't edit reality for the sake of simplicity"
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------------------------------------------------------------------------------
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From: root@localhost.com (Phil Storm)
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Newsgroups: sci.physics.electromag
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Subject: Re: superconductors
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Date: 14 May 1995 00:13:11 GMT
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Organization: Interdictor
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Lines: 18
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NNTP-Posting-Host: via-annex1-12.cl.msu.edu
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X-Newsreader: TIN [version 1.2 PL2]
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Christopher Neufeld (neufeld@caliban.physics.utoronto.ca) wrote:
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: Look in any recent CRC Handbook, there's a table of superconducting
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: alloys and their properties. There may not be much about the high-Tc
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: materials.
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Cool....It seems weird that you can make a superconducting alloy. (most of
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the high temp superconductors are compounds right?) Like the YBaCuO and
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that 125K superconductor.. Strontium Calcium Barium Copper oxide or
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something. Anyway, I have this 1"x1/8" YBCO disc ($15 mail order) and
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can do the meissner effect, but am trying to make it conduct electricity
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with no luck. I'm thinking maybe the thing is coated with something...
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It doesn't conduct electricity at room temperature at all. Nor at -200 C.
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Any ideas?
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Also, is it possible to put a seperate dewar in my 5L liquid nitrogen
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dewar to hold liquid helium? (has to be pretty small...maybe not worth it)
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The neck is only about 2"
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