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