HDTenEightyP/NetNews huggingface dataset:
From: doherty@aplcenmp.apl.jhu.edu (Kevin Doherty)
Subject: Re: Meterials that hard/soften with applied voltage
Organization: Johns Hopkins Continuing Professional Programs
Date: Thu, 19 Nov 1992 00:06:31 GMT

esm40@cd.amdahl.com (Ed McGettigan) writes:

>Does anyone know of any materials/liquids that harden when you apply
>a voltage/current to them and revert when you turn it off?

  Think there's a whole family of such materials-called (I believe)
electrorheologic materials.

  The ones I've heard of tend to be used in magnetic clutches and the
like.  They consist of thick oils loaded with powdered steel-under the
influence of a magnetic field the material 'solidifies' (the powder
consolidates).  The stuff would likely behave the same if you ran a
current thru it (because of the resulting magnetic field).  No problem
that it's an insulator-one variety of this stuff uses mercury as a
matrix.
Newsgroups: sci.materials
From: O2NY000 <O2NY@UNB.CA>
Subject: ADI
Organization: The University of New Brunswick
Date: Sun, 22 Nov 1992 18:22:43 GMT

I am going into my final year of Mechanical Engineering and am
pesently working on a project which consists of the study of
and production of austentempered ductile iron. As the area is
relatively new, and our librairy has limited documentation I would
like to ask anybody who has any information to please forward it to
this address. Thankyou David Szemerda.

Newsgroups: sci.materials
From: ewstroup@cc.utah.edu (ERIC W. STROUP)
Subject: Adhesives
News-Software: VAX/VMS VNEWS 1.4-b1  
Organization: University of Utah Computer Center
Date: 18 Nov 1992 16:47 MST  

Can anyone help me find an adhesive to bond glass beads to Silicon Nitride.
The adhesive needs to hold in a 10mM solution of NaCl and H20.

-Eric
ewstroup@cc.utah.edu
From: ghonge@usc.edu (Subodh Ghonge)
Newsgroups: sci.materials
Subject: Strontium titanate substrate wanted !!
Date: 20 Nov 1992 08:50:32 -0800
Organization: University of Southern California, Los Angeles, CA
Distribution: world
NNTP-Posting-Host: phakt.usc.edu


Does anyone know of any vendor from whom I could buy (001) oriented SrTiO3
substrate material ? 

Subodh.
ghonge@usc.edu


Newsgroups: sci.materials
From: weber@jedi.ssd.lmsc.lockheed.com (Kevin Weber)
Subject: Re: Strontium titanate substrate wanted !!
Followup-To: sci.materials
Organization: Lockheed Missiles and Space Co.
Date: Fri, 20 Nov 92 18:30:47 GMT

In article <1ej50oINNf70@phakt.usc.edu>, ghonge@usc.edu (Subodh Ghonge)
wrote:
> 
> 
> Does anyone know of any vendor from whom I could buy (001) oriented SrTiO3
> substrate material ? 
> 
> Subodh.
> ghonge@usc.edu

Don't know about orientated, but Goodfellow does carry randon oriented,
single crystal strontium titanate.

Very expensive stuff!!

Goodfellow Corp.
P.O. Box 937
Malvern, PA 19355

1-800-821-2870
1-215-640-1612

kevin
From: dwalton@athena.mit.edu (Dave Walton)
Newsgroups: sci.materials
Subject: Cold Fusion
Keywords: Cold Fusion, Hydrogen, Paladium
Date: 20 Nov 92 07:06:21 GMT
Organization: Massachusetts Institute of Technology

Hi there.  I was in my quantum class today and my professor, Keith Johnson,
started talking about Cold Fusion, or at least, what was thought to be
cold fusion.  He said that what was actually being witnessed wasn't a nuclear
reaction at all (big surprise) but a new type of phase transformation of
hydrogen in the paladium.

Apparantly, Toyota has cought on to this new type of energy (well, not new, 
just mis-understood) and is currently funding Pons and Fleishman (sp?) at
a lab in France.

It is pretty much accepted that electric vehicles are feasable and that
hydrogen-burning vehicles will be coming.  This new type of rection which makes
use of the way that paladium "sucks up" hydrogen like a sponge, combined with 
the great deal of energy released with an applied voltage, could combine the
two technologies into a new type of engine that produces as it's only by-product
(after a catalytic converter to extract the nitrous oxides) water.  According
to Japanese sources, Toyota and Nissan are speeding ahead with this research
and may have a working prototype in the next couple of years.

I am interested in this topic and would like to hear some more detailed 
explanations of the mechanisms going on (speculation is fine since the exact\
mechanisms are still not completely understood) along with some response to
why the United States thought that this was a technology unworthy of attention,
whereas Japan realized that something was there and followed it.

 - Dave Walton  (dwalton@athena.mit.edu)

P.S.  1) This is my first posting, so sorry if it doesn't meet some standard
            or another.
      2) Sorry about the spelling of names, and the obscurity of some of the
            technical references.  I'm not well-versed on this subject... yet.
Newsgroups: sci.materials
From: purple@decwd.ece.uiuc.edu ( )
Subject: EM properties of materials
Reply-To: purple@emcdec1.ece.uiuc.edu
Organization: University of Illinois at Urbana
Date: Tue, 17 Nov 1992 05:01:54 GMT


Does anyone know of recent studies into the electric and magnetic
properties of materials at several frequencies?

I have searched for a while and have only found Von Hippel.


--------------------------------------------------------------------------
Paul R. Hayes
Electromagnetic Communication Laboratory, University of Illinois
1406 West Green Street, Urbana, IL, 61801-2991
purple@emcdec1.ece.uiuc.edu
Phone(217)333-1200; Fax(217)333-8986, or, 333-5962

Newsgroups: sci.materials
From: Riccardo Mannella <mannella@ipifidpt.difi.unipi.it>
Subject: Help with buckret@sol1.lrsm.upenn.edu
X-Xxmessage-Id: <A73022F01B0108C9@mann1.difi.unipi.it>
X-Xxdate: Wed, 18 Nov 92 16: 42:24 GMT
Organization: Dipartimento di Fisica, Universita' di Pisa, Italy
X-Useragent: Nuntius v1.1.1d11
Date: Wed, 18 Nov 1992 15:34:02 GMT

I need help: I understand that I can subscribe the fullerenes mailing 
list at the above Internet address, but given the number of people
in our physical community in Pisa, we ended up with some 10+
subscriptors. Now, having said that I could work on some kind of internal
delivering/updating/whatever system so that only one person would need to 
subscribe, I wonder if the weekly list is available, say under NNTP, from 
the net without the need to subscribe it. For example, in this group!
E-mail answers preferred,
Cheers,
Riccardo
 
----------------------------------------------------------------------
Riccardo Mannella             E-mail : mannella@ipifidpt.difi.unipi.it
Dipartimento di Fisica                 riccardo@mann1.difi.unipi.it
Universita' di Pisa                    BITNET mannella@ipivaxin
Piazza Torricelli 2                    DECNET 39186::mannella 
56100 Pisa                    Phone  : +39 50 45221/2/3
ITALY                         FAX    : +39 50 48277
----------------------------------------------------------------------
Xref: sparky sci.materials:903 sci.engr:2292 sci.engr.mech:543
From: bic@engr.uark.edu (CHANDRAN BIJU I)
Newsgroups: sci.materials,sci.engr,sci.engr.mech
Subject: common solder materials
Summary: Looking for a book listing the mech props of solder matrls.
Keywords: mech props, solder materials
Date: 18 Nov 92 16:12:29 GMT
Article-I.D.: engr.1992Nov18.161229.11293
Organization: University of Arkansas

Is anyone out there familiar with a book or an article listing the mechanical
properties (Youngs modulus, etc.) of common solder materials.
 
Xref: sparky sci.materials:923 sci.engr:2304 sci.engr.mech:556
From: dlmedli@snll-arpagw.llnl.gov (medlin douglas l)
Newsgroups: sci.materials,sci.engr,sci.engr.mech
Subject: Re: common solder materials
Keywords: mech props, solder materials
Date: 21 Nov 92 20:52:41 GMT
Organization: Sandia National Labs, Livermore, CA

Try "printed Circuit Handbook" ed. C.L. Coombs (Mcgraw Hill,1988)
chapter 24, "Solder Materials and Processes"
Xref: sparky sci.materials:914 sci.engr.mech:549
From: app@shamash.cdc.com ( GSD Advanced Packing/Processes)
Newsgroups: sci.materials,sci.engr.mech
Subject: Re: common solder materials
Summary: Good Luck finding exact info!
Keywords: mech props, solder materials
Date: 19 Nov 92 18:30:15 GMT
Followup-To: sci.materials
Organization: Control Data Corporation, Arden Hills, MN


 pkbhatti@kopth004.delcoelect.com (Pardeep K. Bhatti) writes:
>In article <1992Nov18.161229.11293@engr.uark.edu> bic@engr.uark.edu (CHANDRAN BIJU I) writes:
>>Is anyone out there familiar with a book or an article listing the mechanical
>>properties (Youngs modulus, etc.) of common solder materials.
>> 
>
>Welcome to the exotic world of solder materials!!!
>
>There is very limited solder property data in books, but there are a good
>number of technical papers on this subject. A good starting point will be
>the ASME Journal of Electronic Packaging and IEEE Transactions on Components,
>Hybrids, and Manufacturing Technology (CHMT). Also check proceedings from
>ASME WAM conferences from recent years. However, there is a wide variation
>in the published solder property data in the literature. For example, there
>is a 5 to 1 variation in the reported Young's modulus figures for the most
>common solder (63/37 Sn-Pb).
>Pardeep K. Bhatti                         pkbhatti@kopth004.delcoelect.com

You might also consider "Solders and Soldering",by Howard Manko for
sketchy properties. The International Tin Research Institute (ITRI,
Uxbridge England) has a nice compilation of tin based solder
properties which they will send you if you ask nicely.  There's also
the monograph "Solder Mechanics: A State of the Art Assessment",
edited by D. Frear, W.B. Jones and K.R.Kinsman which may include
useful information on solder properties and more importatntly, how to
interpret published properties, i.e., what behavior to expect at what
templerature and stress state conditions.
Steve Axdal
Computing Devices International
app@shamash.cdc.com
Organization: Penn State University
Date: Thu, 19 Nov 1992 02:16:31 EST
From: <TJR122@psuvm.psu.edu>
Newsgroups: sci.materials
Subject:    Fiber Optics

Greetings!  Does anyone know where I can get CHEAP (NOT communications
grade) fiber optics, unsheathed (single strands) ....like the ones used
in those 'Color Lamps' ...but at least 4 feet long??

Any info would be much appreciated!  -- Tom Rusnock --  TJR122@PSUVM.PSU.EDU
Newsgroups: sci.materials
From: kester@mte.ncsu.edu (Dan Kester)
Subject: Jeopardy
Organization: North Carolina State University
Date: Wed, 18 Nov 1992 14:11:10 GMT

 A couple of nights ago a materials scientist won in the semi-final round of
Jeopardy! This is in their annual "Tournament of Champions".
From: ms15@jaguar.uofs.edu
Newsgroups: sci.materials
Subject: plastic polymers used to calc speed of light.
Date: 19 Nov 92 18:18:47 GMT
Organization: University of Scranton

From: ms15@pyramid.cs.uofs.edu (Michael Schweisguth)
Newsgroups: sci.materials
Distribution: world
Followup-To :  
Reply-To: Ms15@jaguar.uofs.edu
Organization: University of Scranton, PA
Subject: opto-electronics  
Keywords: fiber optics

  hello:
         in my modern physic's lab, which I TA, we are trying to set up
     an experiment to calculate the speed of light using fiber optic
     cable.  We send a pulse first through a 15 cm piece of plastic polymer
     cable and then we send the pulse through a 30 meter piece of plastic
     polymer.  We view the light pulse as it exits from both the 15 cm and 30       meter pieces of fiber optic cable.  The light definetly takes longer to        travel through the 30 meter section then the 15 cm section.  From this         delay, we are able to calculate a value for the speed of light.

          our problem is that the speed of light that we are calculating
     is that of the speed of light in plastic polymer.  we have been trying
     to find the relative permittivity and permeability of plastic polymer
     so that we can transform the results into the speed of light
     in a vacuum.

          we have wondered how important it is to know exactly what kind
     of plastic polymer we are using?  Do different types of plastic fibers         have radically different permittivities and permeabilities or are
     there generally accepted industry standards for these values.  Also,
     a question was raised about how well the process of making the fiber
     relates to the permittivities of plastic polymer.  Does the permittivity
     of a plastic polymer vary widely from batch to batch.

          basically, we are looking for a way to measure our error so that
     when the students do the experiment, we have some idea as to how
     close their results should be. Also, we would like to know how close
     we can get to the value for the speed of light in a vacuum.

       any information pertaining to this topic would be greatly appreciated!

         thanks, 
                 Michael.

-----------------------

   You'll be at the biggest party in the world if you enjoy life!  :-)
From: esm40@cd.amdahl.com (Ed McGettigan)
Newsgroups: sci.materials
Subject: Meterials that hard/soften with applied voltage
Date: 18 Nov 92 20:04:02 GMT
Organization: Amdahl Corporation, Sunnyvale CA

Does anyone know of any materials/liquids that harden when you apply
a voltage/current to them and revert when you turn it off?

-- 
+------------------------+
|Edward McGettigan       |
|esm40@cd.amdahl.com     | 
+------------------------+
Newsgroups: sci.crypt
Subject: Re: Demons and Ogres
From: john.eichler@grapevine.lrk.ar.us (John Eichler) 
Date: 19 Nov 92 10:18:00 GMT
Reply-To: john.eichler@grapevine.lrk.ar.us (John Eichler) 
Distribution: world
Organization: The GrapeVine BBS *** N. Little Rock, AR *** (501) 753-8121


>In <1992Nov17.065526.15487@cactus.org> Terry Ritter states:

> Nonsense.  My proposal is that, given the ciphertext, the user
> would be required to make it plain.  This means that there would
> be a responsibility to log old *keys*, not conversations.

I must be missing something here.  I agree with what Terry says but if I
were to have a copy of a plaintext message to Terry and were to encrypt it
with his public key, just how would I go about making such plaintext plain
again WITHOUT his secret key even if I wanted to for any purpose.  In other
words, even if I maintained a copy of the original plaintext message, how
could I prove it was what was encrypted using, for example, PGP.

Is this a problem?  And if so, what is the best way to approach it.
---
 . SM 1.06 ----- . Email: john.eichler@grapevine.lrk.ar.us
From: linnoise@bigboy (LineNoise)
Newsgroups: sci.crypt
Subject: Re: Cryptology and criminals
Date: 18 Nov 92 04:59:22 GMT
Organization: Temple University

Why must things be taken to extremes?  Technology that is primarily used to
bring harm to people or avoid law enforcement agencies should be limited in
their distribution and monitored closely.  We don't want offensive nuclear
capability to spread to unstable nations or handguns to be given to people
with a history of violent crime(s) or mental instability.  On the other hand
we want to keep the right to bear arms and use them in self defense and promote
the use of nuclear technology when it comes to non-destructive purposes. The
same holds with cryptography-- limit it so that the abuse by criminals and
other hostile bodies will have the capability to misuse it.  Allow only those
encryption methods defeatable by the law enforcement agencies to distributed
and outlaw the distribution of more powerful methods.  And enforce laws that
will help protect the common man's privacy from those who have no business in
decrypting his data.
From: res@colnet.cmhnet.org (Rob Stampfli)
Newsgroups: sci.crypt
Subject: Re: Limits on the Use of Cryptography?
Date: 17 Nov 92 04:56:43 GMT
Article-I.D.: colnet.1992Nov17.045643.27246
Organization: Little to None

In article <1992Nov16.090434.24712@cactus.org> ritter@cactus.org (Terry Ritter) writes:
>>That is, as long as it is a legitimate response to a warrant for my keys
>>to say "I don't know them; I threw them all away as soon as the session
>>ended" or "I never knew them", I'm not sure I'd object to such a warrant
>>issuing (except as a taxpayer concerned about the waste of my dollars on
>>on futile pursuits).
>
> Can you imagine being able to avoid revealing your tax records
> like this?  The government does impose serious record-keeping and
> disclosure requirements right now; this is neither a new function
> of government, nor a new sort of requirement for citizens.

The difference as far as I'm concerned is that the government has a vested
interest in tax records, and not just in a few specific cases, but generally
enough to require everyone to expend some effort to comply.  On the other
hand, to use a rather crude example (and unfortunately I can't think of a
better one off hand), although the government might benefit from being
able to test for intoxication after the fact in a few isolated situations,
it would be far too invasive for them to require you to retain a specimen
every time you urinate.  I view retaining crypto keys as more like the
latter than the former.  If such a key retention requirement is seriously
proposed, my thought would be that either the government was actively trying
to make cryptography too difficult for the average citizen to consider
using, or, like the "conspiracy" laws, trying to ensure that if they can't
get you for what they want to get you on, they can at least get you on
something.
-- 
Rob Stampfli  rob@colnet.cmhnet.org      The neat thing about standards:
614-864-9377  HAM RADIO: kd8wk@n8jyv.oh  There are so many to choose from.
From: boucher@csl.sri.com (Peter K. Boucher)
Newsgroups: sci.crypt
Subject: Re: My encryption program.  Comments?
Date: 21 Nov 1992 13:57:13 GMT
Organization: Computer Science Lab, SRI International
Distribution: world
NNTP-Posting-Host: affirmed.csl.sri.com

In article <1992Nov21.010043.4210@nwnexus.WA.COM>, ken@halcyon.com (Ken Pizzini) writes:
|> In article <1ejpp5INNdef@roche.csl.sri.com> boucher@csl.sri.com (Peter K. Boucher) writes:

[stuff deleted...]

|>
|> So the whole thing depends on how strong your keystream generator is.
|>
|>              --Ken Pizzini

Well, I'd offer to buy dinner for anyone who could crack it, but I'd rather
get your input on my algorithm first.  I'll email the source to anyone who's
interested (if they take a solemn vow never to reveal what they've learned :-)

-- 
Peter K. Boucher
--
RIPEM public key available upon request.
Newsgroups: sci.crypt
From: craig@jido.b30.ingr.com (Craig Presson)
Subject: Re: PC correction
Reply-To: craig@jido.b30.ingr.com
Organization: Intergraph Corporation, Huntsville, Alabama
Date: Tue, 17 Nov 1992 22:28:10 GMT

In article <1992Nov17.173525.18074@convex.com> gardner@convex.com (Steve Gardner) writes:
[...]
In article <1992Nov17.001101.21926@ncar.ucar.edu> prz@sage.cgd.ucar.edu (Philip Zimmermann) writes:   >What I now read from some of you folks smacks of the same level of
   >fanaticism as my old marginalized hardliner leftist friends with their
   >Politically Correct preaching to the choir.  They used to incessantly
   >bicker amongst themselves over who had the most orthodox P.C.
   >position. [...]
	   And another thing dammit! ;-) I can't help grimacing whenever I hear 
	   someone use the word "politically correct".  That little phrase has
	   been the biggest success story in the right wing's campaign
	   to ridicule diversity. Even people on the left seem to use it.
	   Its a red herring and it is usually used to batter people into
	   being silent on issues of racism and sexism.  If you complain of
	   insensitivity to the feelings of any group OTHER than hetero-sexual
	   WASPS you are being "politically correct".   Right!

Hey, pull over, buddy. History police. Caught you racing off in all
directions here, probably from a bad case of youth. Phil was giving a
perfect example of the original use of "politically correct" *by the
Left*. Do you perhaps remember "self-criticism"? Let's back up further.
Do you remember Chairman Mao? Have you ever seen a Little Red Book?
Is the New Left now the Old Left? (Funny, there was a sendup of
exactly this on Murphy Brown last night. Synchro!)

While it's true that the current usage of the term is almost always
snide, the history of it provides ample justification. 

I don't know where to send followups, maybe alt.politics.correct,
which I don't read, so I didn't redirect. Maybe we should check that
group for a FAQ list ;-)

-- Craig Presson
Heterosexual White Celtic (extremely) Protestant & recovered Leftist
who does not give a damn whether anyone is "sensitive to my feelings".






Newsgroups: sci.crypt
From: marc@tanda.isis.org (Marc Thibault)
Newsgroups: sci.crypt
Subject: Re: New Encryption - a Challenge
Date: Sun, 22 Nov 92 11:02:09 EST
Reply-To: marc@tanda.isis.org
Distribution: na
Organization: Thibault & Friends

In article <n0eect@ofa123.fidonet.org> 
Erik.Lindano@ofa123.fidonet.org writes: 
           ....

>  the algorithm. We just said (and still do) that the algorithm will 
>  not be published as a preliminary to this challenge. As usual, what 
>  happens afterwards will probably be dictated more by the vagaries of 
>  the market, and by our ability to deal with them, than by any 
>  technician's work or any test results obtained here.

        We're nothing if not patient. Eventually, the method will
        either surface as a product/publication or vanish into
        deserved obscurity. In the latter case, little time will have
        been wasted on a useless method; in the former, we will all
        get to enjoy playing with something very interesting.

        In the meantime there are other interesting things to play
        with.

        Cheers,
                Marc

---
 Marc Thibault        |  Consulting Systems Analyst  |  The PC: Colt '45
 marc@tanda.isis.org  |  R.R.1, Oxford Mills,        |  of the information
 CIS:71441,2226       |  Ontario, Canada  K0G 1S0    |   frontier
 NC FreeNet: aa185    |                              |

-----BEGIN PGP PUBLIC KEY BLOCK-----
Version: 2.0

mQBNAiqxYTkAAAECALfeHYp0yC80s1ScFvJSpj5eSCAO+hihtneFrrn+vuEcSavh
AAUwpIUGyV2N8n+lFTPnnLc42Ms+c8PJUPYKVI8ABRG0I01hcmMgVGhpYmF1bHQg
PG1hcmNAdGFuZGEuaXNpcy5vcmc+
=HLnv
-----END PGP PUBLIC KEY BLOCK-----


Newsgroups: sci.crypt
From: markd@uniwa.uwa.edu.au (Mark Diamond)
Newsgroups: sci.crypt
Subject: Re: Triple DES
Date: 19 Nov 1992 21:32:22 +0800
Organization: The University of Western Australia
NNTP-Posting-Host: uniwa.uwa.edu.au

The question arose in a previous reply to this posting of whether
triple, double or any other repeated DES encryption was stronger than a
single encryption.  The previous reply indicated that the question was
still open.  It is not open ... it has been settled and the results
presented at CRYPTO 92.

Essentially the question about the strength of double encryption is the
same as the question about whether DES is or is not a group.

If DES were a group then for two keys K1 and K2

       DES( DES(Plaintext, K1), K2) == DES(Plaintext, K3) for some

K3 which presumably the eavesdropper is trying to discover ... the point
being that they would not have to find K1 and K2, but only a kind of
"combination" K3.

The recently demonstrated fact that DES is *not* a group indicates that
a double encryption *is* stronger than single encryption.
Newsgroups: sci.crypt
From: a7657@mindlink.bc.ca (Stephen H. Kawamoto)
Subject: Re: New Developments on Digital Telephony
Organization: MIND LINK! - British Columbia, Canada
Date: Mon, 16 Nov 1992 19:47:51 GMT

CB> I wouldn't sweat it, at least not on this one.  Anyone silly
CB> enough to take a post suggesting hiring 2/5 of the US population
CB> for such purposes would get a well deserved round of Flame-Mail.
CB> ;)

 i also try not to take anything seriously... at least not unless it was
posted in PGP format :)

--
Stephen Kawamoto <a7657@mindlink.bc.ca>
    "It is the very mind itself
     That leads the mind astray;
     Of the mind,
     Do not be mindless."
     (an old Japanese folk song)