HDTenEightyP/NetNews huggingface dataset:
From: spackman@disco-sol.dfki.uni-sb.de (Stephen Spackman)
Newsgroups: sci.physics
Subject: Re: How to write integrals (was Re: The confusion of tongues (was ...))
Followup-To: sci.physics
Date: 24 Jan 1993 21:01:55 GMT
Organization: DFKI Saarbruecken GmbH, D-W 6600 Saarbruecken
	<106364@netnews.upenn.edu>
Reply-To: stephen@acm.org
NNTP-Posting-Host: disco-sol.dfki.uni-sb.de
In-reply-to: weemba@sagi.wistar.upenn.edu's message of 24 Jan 93 17:13:15 GMT

In article <106364@netnews.upenn.edu> weemba@sagi.wistar.upenn.edu (Matthew P Wiener) writes:
|In article <1993Jan21.211430.25660@stsci.edu>, kimball@stsci (Timothy Kimball) writes:
|>One of my first calculus teachers tried to get us to drop the dx
|>completely, on the grounds that the integral symbol served as an
|>operator on a function, and the x in dx was just a dummy index of
|>integration.
|
|You have to at least indicate what the dummy variable is _somewhere_.
|Mathematicians dealing with pure function symbols--ie, f, not f(x)--
|will write Int(f) when it's convenient.  Which usually means 1-D only.

Ergo, the best notation ought to be Int(\x.f x) or Int(x+>f x) [where \
is a lower-case lambda and +> is a barred arrow]. If the variable you
want to integrate over isn't the function's first argument, you can
always transpose it....
----------------------------------------------------------------------
stephen p spackman    +49 681 302 5288(o) 5282(sec)    stephen@acm.org
      dfki / stuhlsatzenhausweg 3 / d-w-6600 saarbruecken 11 / germany
----------------------------------------------------------------------
Newsgroups: sci.physics
From: dannyb@panix.com (Daniel Burstein)
Subject: Re: ques about earlier "suicides" of SDI scientists
Organization: PANIX Public Access Unix, NYC
Date: Sat, 23 Jan 1993 23:10:38 GMT

In <23JAN199307045841@delphi.gsfc.nasa.gov> packer@delphi.gsfc.nasa.gov (Charles Packer) writes:

>In article <C13FA7.K4t@panix.com>, dannyb@panix.com (Daniel Burstein) writes...
>>down the results of any investigations.  The only stuff I've found has
>>been news articles simply describing the venets.["events", presumably]


>How about recalling where you saw the news articles, and when?
>Try real hard...

problem with the articles I've found is that they're only reporting the
deaths, or, at best, giving a "investgators are looking into it"

I haven't been able to find any coverage giving the results of the
enquiries.  The story just seemed to have died (no pun intended).

This is -kind of- reaching into ALT.CONSPIRACY stuff, but these deaths
certainly did occur, so I reached out to the SCI type nets because that's
where people who deal with scientists would hang out...

dannyb@panix.com
From: wtyler@adobe.com (William Tyler)
Newsgroups: sci.physics
Subject: Re: New Physics,Healing & Paranormal 2 "White Paper"
Date: 26 Jan 93 23:45:50 GMT
Followup-To: sci.physics
Organization: Adobe Systems Inc., Mountain View, CA

In article <C1H5D6.6Jr@well.sf.ca.us> sarfatti@well.sf.ca.us (Jack Sarfatti) writes:
>
>Continuing part 2 of my paid for "intelligence analysis" on the impact
                         ^^^^^^^^

Does this mean you'll have funds to do some of those experiments you
haven't been able to afford?

-- 
Bill Tyler      wtyler@adobe.com
From: tw@aifh.ed.ac.uk (Toby)
Newsgroups: sci.physics
Subject: Why does the moon keep the same face to the Earth?
Date: 23 Jan 93 15:41:16 GMT
Reply-To: tw@aifh.ed.ac.uk (Toby)
Organization: Dept AI, Edinburgh University, Scotland


Some friends and I were trying to work out why the moon maintains
the same face towards the earth. Our favourite theory is that the
moon is asymmetric, and its orientation is a minimum of gravitional
energy - this would explain why it maintains this orientation under
disturbances like large asteroid strikes, gravitational influences
of the sun .... A rival theory was that its angular velocity is
a direct consequence of it being spun off the Earth (the "where did the
Pacific Ocean go?" theory). However, I am more dubious that this
would be so stable? Can anyone help answer this question? Thanks 
in advance,

toby
Newsgroups: sci.physics
From: sarfatti@well.sf.ca.us (Jack Sarfatti)
Subject: re: Weiner's question on "experiments".
Organization: Whole Earth 'Lectronic Link
Date: Sun, 24 Jan 1993 00:27:25 GMT


From: bweiner@ruhets.rutgers.edu (Benjamin Weiner)
Subject: Re: 2 of 4 moderators not qualified for sci.phys.research
Date: 22 Jan 93 22:23:31 GMT
Organization: Rutgers Univ., New Brunswick, N.J.

Well if most of the stuff posted is theory, Jack, then why don't
you start alleviating the imbalance by posting experimental
material.  We are all waiting for the results of your experiments,
after all...

To which I respond:
1) If I had the money to get the experiments done I would.
2) I am not an experimentalist.
3) Reading between the lines you seem to insinuate that I have no
respect for experiments. Quite the contrary, I think a moderated
conference on experimental physics would be most interesting.

There should be separate threads:
experiment
conventional theory
half-baked wild ideas that in principle can be proved wrong
dustbin
From: brahm@cco.caltech.edu (David E. Brahm)
Newsgroups: sci.physics
Subject: Re: Home made monopoles
Date: 25 Jan 1993 21:59:39 GMT
Organization: California Institute of Technology, Pasadena
NNTP-Posting-Host: punisher.caltech.edu
Summary: Can't be done

bdoa@digex.digex.com (Barry Adams) wrote,
>                     Home made magnetic monopoles
> [Glue together 2 hemispheres each magnetized with "North" at its pole]

dseeman@novell.com (Daniel Seeman) writes:
> ...Just because we "know" the South Pole exists in the volume cavity
> inside doesn't mean we can actually "see" it...

I don't know who's serious and who's joking here, but for the record,
Adams's construction is not a monopole (I believe it's a quadrupole).
Field lines outside the sphere emerge from each pole and re-enter at the
equator; "glue" doesn't stop them!  You can't make something that violates
Gauss's Law of Magnetism (del.B=0) by superposing things that obey it.

--
Staccato signals of constant information,  |  David Brahm, physicist
A loose affiliation of millionaires and    |  (brahm@cco.caltech.edu)
  billionaires and Baby ...                |---- Carpe Post Meridiem! --
These are the days of miracle and wonder,  | Disclaimer:  I only speak
And don't cry, Baby, don't cry, don't cry. |   for the sensible folks.
Newsgroups: sci.physics
From: met48546@uxa.cso.uiuc.edu (Marc E. Talbot)
Subject: Re: TIME HAS INERTIA ABIAN replies to SOMLO
Organization: University of Illinois at Urbana
Date: Fri, 22 Jan 1993 18:55:15 GMT

abian@iastate.edu (Alexander Abian) writes:




>Mr. SOMLO,
>  
>You asked:
>     
>                "Why only mass distorts space ?"

>My reply:
>    
>       NOTHING DISTORTS THE SPACE EXCEPT THE DISTORTED MENTALITY
>       AND IMAGINATION OF SOME CRACKPOT PHYSICISTS

>                                Alexander Abian
>TIME HAS INERTIA.


Do you have to add lots of lead to your drinking water or is it just there?
From: blom@husc15.harvard.edu
Newsgroups: sci.physics
Subject: Re: THE DIVINE MASTERS OF THE UNIVERSE
Date: 26 Jan 93 11:59:45 EST
Organization: Harvard University Science Center

We *really* should have a soc.metaphysics group, to redirect this traffic! :)

Eric Blom
Harvard U
From: bdoa@digex.digex.com (Barry Adams)
Newsgroups: sci.physics
Subject: Home made monopoles
Date: 23 Jan 1993 09:42:42 GMT
Organization: Express Access Online Communications, Greenbelt, MD USA
NNTP-Posting-Host: access.digex.com
X-Newsreader: Tin 1.1 PL3

   

                     Home made magnetic monopoles
                     ============================

   Contrary to popular belief , magnetic monopoles exist and are easy to
make . Take a Steel hemisphere and cut a concentric hemisphere cut of the
middle , now magnetize the hemisphere such that the domains of the object
are aligned with the north (south) pole pointing outwards. Now stick two of
the hemispheres together forming a sphere  (glue strong enough to resist
the magnetic repulsion of the hemispheres is required) you now have your
magnetic monopole :-) , since any observer will see the object having a north
pole only (unless they cut it open).
   Of course the configuration is unstable and the domains will slowly try
to rearrange themselves to a more stable state. And the magnetic force still
decays like a dipole. Such objects might to useful as frictionless bearings.

Barry Adams

   


           
Newsgroups: sci.physics
From: matmcinn@nuscc.nus.sg (A COLD METALLIC COMPUTER_LIKE VOICE FROM OUTER SPACE)
Subject: Re: New Physics - New Age White Paper
Organization: National University of Singapore
X-Newsreader: Tin 1.1 PL4
Date: Wed, 27 Jan 1993 09:28:17 GMT

NEGATIVE RUDE FELLOWS: OBEY AND FOLLOW JACK. RESISTANCE IS USELESS.
Xref: sparky sci.physics:23488 sci.skeptic:22872 alt.paranormal:2834 alt.sci.physics.new-theories:2833 rec.arts.startrek.tech:7756
From: nelson_p@apollo.hp.com (Peter Nelson)
Newsgroups: sci.physics,sci.skeptic,alt.paranormal,alt.sci.physics.new-theories,rec.arts.startrek.tech
Subject: Re: New Physics, Healing, Paranormal
Date: 26 Jan 93 14:54:20 GMT
Article-I.D.: apollo.C1GuqL.Jn
Organization: Hewlett-Packard Corporation, Chelmsford, MA

In article <C1GEpL.4H7@well.sf.ca.us>, sarfatti@well.sf.ca.us (Jack Sarfatti) writes:
| I am being paid a significant amount of money to write this by an
| influential European corporation. If you want to make
| corrections,suggestions etc. with no monetary compensation from me,feel free
| to do so. I will include opposing points of view in footnotes with your
| names if you like. All I can say is that this document is going to be
| translated into Spanish, French, Portuguese,Russian, Hindi and will be
| read by some of the most powerful people (politicians, CEO's of multi-
| nationals etc.) in the world who are about to set up a satellite based
| multi-media world wide university in which I have been asked to play a
| major role with major funding.

| This is no joke! I have been told that I am a "super star" in some powerful
| circles that have decided that traditional universities are "brain dead"
| and that something new-age is needed.


| Admiral Sarfatti
| Star Fleet Academy
| Star Fleet Command
| Presidio
| San Francisco
| Federation of United Planets.

   And you guys still don't think Star Trek is Bad For You?  
   Maybe some people can't handle that much "intellectual
   stimulation".

   8-)


---peter
Newsgroups: sci.physics
From: Leigh Palmer <palmer@sfu.ca>
Subject: Re: Home made monopoles
X-Xxmessage-Id: <A78CB057B3011C1B@rs13-annex3.sfu.ca>
X-Xxdate: Wed, 27 Jan 93 05:34:15 GMT
Organization: Simon Fraser University
X-Useragent: Nuntius v1.1.1d16
Date: Thu, 28 Jan 1993 05:34:04 GMT

In article <mcirvin.728156163@husc.harvard.edu> Matt McIrvin,
mcirvin@husc8.harvard.edu writes:

>One or the other.  The idea was essentially to make a spherical
>shell out of magnetic dipoles.  In the limit of an infinitely
>rigid sphere and infinitely robust dipoles, pushing the hemispheres
>together would take an infinite amount of energy; the force you
>need diverges as the edges get closer.  A real hemisphere is only
>finitely strong and is made of stuff whose magnetic dipoles will
>reorient if the energy difference is large enough.  So at some
>point, either a hemisphere will break or the field will leak
>through the surface (probably the latter, I'd guess).

I don't know how you obtained that "infinite energy" solution. It is
certainly incorrect. The correct solution, B = 0 everywhere, is the only
spherically symmetric solution to div B = 0, has been posted elsewhere in
this group. No superstrong materials are required, but the thing is
practically infeasible, cute though it would be.

Leigh
Newsgroups: sci.physics
From: sarfatti@well.sf.ca.us (Jack Sarfatti)
Subject: re:Gallis breakthrough - "local" dynamics & "nonlocal" psi
Organization: Whole Earth 'Lectronic Link
Date: Thu, 28 Jan 1993 20:07:25 GMT


>>You forgot one of the most important, which is LOCALITY!!!!!
>
>No Mike, I did not forget locality, but I did not include it because
>Bell's theorem shows that locality is not consistent with standard quantum
>mechanics. Therefore, locality cannot be the reason that standard quantum
>mechanics forbids quantum connection communication.
>
ARGHHHHHHHHHHHHHHHHHHHHHHHHH

>You are (still) failing to distinguish between nonlocal quantum coherence
>in the wavefunction, and nonlocal evolution in the hamiltonian!!!
>Even with nonlocal quantum coherence, local evolution is incompatible with
>FTL communication.

No, Mike, I have always assumed that the Hamiltonians are local in the
field picure with jA coupling. If they were nonlocal over macro-distances
then I suppose it would be no surprise to have FTL communication.
Whenever,I use "nonlocal" I mean in the wave function which I consider to
be physically real in the sense of Bohm's quantum potential. I am quite
clear about the distinction between Hamiltonian and wavefunction. Since it
never crossed my mind to make the dynamics nonlocal in this game I was not
understanding what you were saying in that regard since it is not at all
relevant to what I am trying to do, i.e. quantum connection communication
because of nonlocal wavefunction with local particle-field couplings.
From: jac@ds8.scri.fsu.edu (Jim Carr)
Newsgroups: sci.physics
Subject: Re: Moderator Fitness
Date: 22 Jan 93 18:07:53 GMT
Reply-To: jac@ds8.scri.fsu.edu (Jim Carr)
Organization: SCRI, Florida State University

Since the CFD has long expired and the CFV has gone out some time ago, we 
should let the votes speak.  If the change passes, then one can monitor 
which articles are accepted and which are rejected and see if some 
revolution is required.  My own view is that few problems will arise. 
After all, there will still be several other groups (with reduced traffic) 
for discussion of material considered unsuitable in the research area. 

As for style in this forum disqualifying a person: I have seen more 
vituperative attacks made at *meetings* than I have ever seen in this 
newsgroup.  What one says, and how one attacks an ideas, is often not 
reflected in how one evaluates the suitability of an argument for 
argumentation.  As a referee, I may accept a paper for publication 
that I disagree with as long as the position is presented clearly -- 
at some point each author must live or die on the value of the idea. 
After all, I can accept it and immediately start writing a comment.... 

--
J. A. Carr                                    |  "The New Frontier of which I  
jac@gw.scri.fsu.edu                           |  speak is not a set of promises
Florida State University  B-186               |  -- it is a set of challenges."
Supercomputer Computations Research Institute |   John F. Kennedy (15 July 60)
Newsgroups: sci.physics,alt.sci.physics.new-theories
Newsgroups: sci.physics


Ben:

>The energy in the electric field does distort space (thus e.g. the
>Reissner-Nordstrom metric for a charged point mass is different from
>the Schwarzschild metric for a uncharged point mass).

Ted:

>This is true, of course.  However, I think that a little bit more
>deserves to be said.

>The short answer is this:  It's hard to view electromagnetism as a 
>geometrical phenomenon analogous to gravity because electromagnetic
>forces affect different objects in different ways.  Put an electron
>and a proton at the same point in an electric field, and they'll do
>different things.  Put them in a gravitational field and they'll do
>exactly the same thing.  That's the Principle of Equivalence, and it's
>what permits you to regard gravity as geometrical.  Roughly speaking,
>since all objects fall the same way under gravity, you can regard 
>gravity as a property of the space itself.  You can't do that with
>electromagnetism.


The Finsler metric

               i        i  j .5
ds = (e/m) f dx + (g  dx dx )
            i       ij

gives the desired result. However, a different Finsler space will be
required for each family of particles with different charge to mass
ratios. This is equivalent to what Ted wrote. But this is redundant.

I'd like to ask about the generalization:

         i        i  j 1/2        i  j  k 1/3
ds = f dx + (g  dx dx )  + (h   dx dx dx )  + ...
      i       ij             ijk

Can such a metric perhaps give geodisics which are trajectories of
particles with more properties than charge and mass? (eg. color)

Can't hurt to ask, R. Peregrino, ric@spd.hp.com
Newsgroups: sci.physics,sci.skeptic,alt.paranormal,alt.sci.physics.new-theories,rec.arts.startrek.tech
From: mcgrath@cs.uiuc.edu (Robert McGrath)
Subject: Re: New Physics, Healing, Paranormal
Reply-To: mcgrath@cs.uiuc.edu
Organization: University of Illinois, Dept of Computer Science
Date: Thu, 28 Jan 1993 20:10:31 GMT

In article <1993Jan26.203122.8020@lmpsbbs.comm.mot.com>, bhv@areaplg2.corp.mot.com (Bronis Vidugiris) writes:
|> In article <C1GEpL.4H7@well.sf.ca.us> sarfatti@well.sf.ca.us (Jack Sarfatti) writes:
|> )
|> )I am being paid a significant amount of money to write this by an
|> )influential European corporation.
|> 
|> Do you think they'd pay the rest of us?  Oh yeah, would we have to
|> be so new-agey to get funding (dunno if it'd be worth it if we would have
|> to compromise our ideals, ya know).

Surely you don believe this idle boast!  The rest of the post is
total fantasy, so I'd expect the big contract is pure fiction, too.

-- 
  Robert E. McGrath
  Urbana Illinois
  mcgrath@cs.uiuc.edu
From: bmw@ncc.uky.edu (Brian Whiting)
Newsgroups: sci.physics
Subject: Q:  How to de-Gauss a room?
Summary: leftover field from MRI machine
Date: 25 Jan 93 16:33:15 GMT
Organization: University Of Kentucky, Dept. of Math Sciences
X-Newsreader: Tin 1.1 PL4

I thought my problem might be of interest to this group.  I have recently
moved into a suite of rooms which formerly housed a magnetic resonance
imaging facility, with field strengths of ~70,000 Gauss.  Shielding was
not perfect because they had painted lines on the floor indicating presence
of 5 Gauss field.

The problem is that there is a remanant field in the room, first evidenced
by skewed, blotchy computer monitors.  Compass readings show presence of
a dipole which corresponds to former orientation of magnet in room.  I
am waiting to borrow a Gaussmeter to quantify the field.

Naturally, I feel that an environment such as this is not appropriate
for my computer lab.  In particular, I fear for the long-term integrity
of my data on disk and tape.  In addition, there may be a pacemaker hazard
if the field is strong enough.  Is there any information available on the
field strength in which it is safe to operate disks?

Best of all would be to remove the field entirely from the room.  Aside
from the obvious approaches of raising the room temp above the Curie
point or placing a strong magnetic in the opposite orientation, is there
any way to get rid of this field?  Please e-mail me, as I don't normally
read this group.  If there is enough interest, I will summarize back to 
the group.

Thanks for any help, suggestions, advice, leads, etc.


Brian Whiting
Research Associate
Dept. of Geological Sciences
University of Kentucky
606-257-6934
From: franl@centerline.com (Fran Litterio)
Newsgroups: sci.physics
Subject: Re: hidden variables
Date: 22 Jan 93 14:41:27
Organization: CenterLine Software R&D
NNTP-Posting-Host: 140.239.3.116
In-reply-to: daryl@oracorp.com's message of Fri, 22 Jan 1993 13:30:37 GMT

daryl@oracorp.com (Daryl McCullough) writes:

> paul@mtnmath.UUCP (Paul Budnik) writes:
> 
> > franl@centerline.com writes:
> > > In a sense, the wavefunction encodes instantaneous
> > > knowledge of distant events, since a point in phase space encodes
> > > information about physically separate quantum states at a sinlge point
> > > in time (in a given frame of reference).
 
> > One is forced to use phase space because the wave functions for two
> > separate particles will overlap in physical space. One needs some method
> > to represent the probability of finding particle A at location A1 and
> > particle B at location B1. One cannot represent this without using a phase
> > space that includes position coordinates for both particles.
> 
> No, that's not true. In the case of identical particles, one can do
> without phase space by just using the particle density, which gives
> the expected number of particles in a unit volume. Phase space is only
> needed for distant correlations between particles. It is precisely the
> violation of Bell's inequality that forces the use of phase space for
> describing quantum mechanics. If quantum mechanics obeyed Bell's
> inequalities, then there would be a local description of quantum
> mechanics that does not use phase space.

That sounds like putting the cart before the horse.  Shouldn't we
instead say that "the use of phase space for describing quantum
mechanics" forces QM's prediction of "the violation of Bell's
inequality"?
--
franl@centerline.com         "So what we've decided to do is set you up in
uunet!centerline!franl        Cicely, situated in an area that we Alaskans
617-498-3255 (USA)            refer to as The Alaskan Riviera."
PGP 2.0 public key available.
From: bdavis@phoenix.Princeton.EDU (William Davis)
Subject: Nat'l Undergrad Fellowships in Plasma Physics
Originator: news@nimaster
Keywords: fellowships,undergraduate,stipends
Organization: Princeton University
Distribution: usa
Date: Tue, 26 Jan 1993 17:42:47 GMT

                    Applicants Wanted for the 
             National Undergraduate Fellowships 
         in Plasma Physics and Fusion Engineering.  

(Please pass along the following announcement to any strong
candidates, or have them request an application by phoning
(609)-243-2112.  Women and minority students are especially encouraged
to apply.  Thank you.)

The National Undergraduate Fellowships in Plasma Physics and Fusion
Engineering provide outstanding undergraduate students in United
States colleges and universities an opportunity to participate in
projects in the forefront of research and development of fusion
energy. The goal of the program is to stimulate studentsU interest  in
the fields relevant to fusion research while providing capable
assistants to fusion research projects. The fellowships are sponsored
by the United States Department of Energy.

The fellowship program consists of two parts: a one-week introductory
course and nine weeks of research. During the week of June 14 - 18,
1993, students will attend the introductory course at the Princeton
University Plasma Physics Laboratory in Princeton, New Jersey, which
will cover basic elements of plasma physics, an introduction to the
technology questions being addressed by fusion researchers, and an
overview of the worldwide fusion effort.

Starting June 21, each student will then take part in nine weeks of
fusion research at one of the participating universities and national
laboratories. Research opportunities are available in theoretical,
computational and applied physics, materials science, and electrical
and mechanical engineering. Research assignments will conclude on
August 20, 1993.

Students will receive a stipend of $4,800 and will be reimbursed for
travel expenses to and from their university or permanent U.S.
address, up to $1,000. Room and board expenses during the one-week
course at Princeton will be paid by the program.  Students will be
responsible for their housing and meal expenses during the remaining
nine weeks.

Applications are invited from students in engineering, mathematics,
computer science, or physics,who are presently in their junior year in
a U.S. college or university.  Exceptional sophomores will also be
considered.   Students should have taken at least one course in
electricity and magnetism beyond introductory physics. Preference in
selection will be given to students who have not
previously participated in this program.

Students should send application materials to:

National Undergraduate Fellowship  Program
Princeton Plasma Physics Laboratory
P.O. Box 451
Princeton, NJ 08543

Telephone:(609) 243-2112