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Subject: Re: Mars Rock Crock! -- From: =green@pipeline.com= (Word Warrior)
Subject: Re: Mars Rock Crock! -- From: =green@pipeline.com= (Word Warrior)
Subject: Re: easy formula needed soon -- From: Doug Craigen
Subject: Re: Re:Einstein's Constant -- From: schmelze@fermi.wias-berlin.de (Ilja Schmelzer)
Subject: Re: K12 Math Texts Need Improvement. -- From: mstueben@pen.k12.va.us (Michael A. Stueben)
Subject: Re: Maths Competition -- From: tordro@ifi.uio.no (Tord Kallqvist Romstad)
Subject: Idle query: how good are math and science teaching outside the U.S.? -- From: Michael Weiss
Subject: Re: New Bad Astronomy Addition (1/7/97) -- From: hyyue@cse.cuhk.edu.hk (Teacher A)
Subject: Re: Harmonic Resonance -- From: "Jonah Barabas"
Subject: Re: Mars Rock Crock! -- From: ~green@pipeline.com~ (~Word Warrior~)
Subject: Re: Does Apple (Apple) = Apple? -- From: JC
Subject: Re: Harmonic Resonance -- From: "Jonah Barabas"
Subject: Re: Does Apple (Apple) = Apple? -- From: Rebecca Harris
Subject: Re: 1 / 2^.5 or 2^.5 / 2? -- From: Erik Max Francis
Subject: Re: EMP effects in water -- From: "Robert. Fung"
Subject: Re: Coincidence ! (or what ? :-) -- From: thomasl283@aol.com (ThomasL283)
Subject: Re: Mars Rock Crock! -- From: bob tarantino
Subject: Re: Current from a Capacitor. -- From: Alan \"Uncle Al\" Schwartz
Subject: Re: *** CRESCENT MOON VISIBILITY Thu 9 Jan 1997, evening *** -- From: Alan \"Uncle Al\" Schwartz
Subject: Re: Coherence Length and Table Vibration -- From: "J. D. McDonald"
Subject: Re: Time and its existance -- From: Dave Monroe
Subject: Re: Harmonic Resonance -- From: gtaylor@shell1.msn.fullfeed.com (Gregory Taylor)
Subject: Re: Time and its existance -- From: D J Green
Subject: Re: Science Versus Ethical Truth. -- From: mlerma@math.utexas.edu (Miguel Lerma)
Subject: Re: circuit diagram for bathtub electrocution? -- From: Chris Crochet
Subject: Re: Time and its existance -- From: Hermital
Subject: Re: Mars Rock Crock! -- From: msaroff@moose.erie.net (Matthew Saroff)
Subject: Re: paradox -- From: Dave Bergacker
Subject: Re: 1 / 2^.5 or 2^.5 / 2? -- From: "John D. Goulden"
Subject: Re: determinism vs non-determinism, was: Really random? (now back on original topic) -- From: root@power7200.ping.be (Operator)
Subject: IRC Channel #physics -- From: kinsler@dirac.shef.ac.uk (Paul Kinsler)
Subject: Re: Can light be accelerated or decelerated? -- From: Bill Gill
Subject: Sonoluminescence -- From: ramtang@hkstar.com (Hobbes)
Subject: Re: Can light be accelerated or decelerated? -- From: Alan \"Uncle Al\" Schwartz
Subject: Coherence Length and Table Vibration -- From: Walter Polkosnik
Subject: Re: FTL Comm -- From: Peter Nelson
Subject: Re: 1 / 2^.5 or 2^.5 / 2? -- From: Simon Read
Subject: Re: Time and its existance -- From: 'uhane
Subject: Re: Infinitude of Primes in P-adics -- From: Archimedes.Plutonium@dartmouth.edu (Archimedes Plutonium)
Subject: Re: Mars Rock Crock! -- From: Clark Dorman

Articles

Subject: Re: Mars Rock Crock!
From: =green@pipeline.com= (Word Warrior)
Date: Wed, 08 Jan 1997 16:21:44 GMT
"Robert Imrie, DVM"  wrote:
>~Word Warrior~ wrote:
>> "Robert Imrie, DVM"  wrote: 
>>Word Warrior wrote:
>> >> People properly nourished in clean surroundings won't
>> >> get cancer at all.
>> > I sincerely hope this is a joke, because there's not the tiniest bit of
>> > evidence to suggest it is true.
>> That's not quite the case.
>Actually, it is the case -- but don't take my word for it.
I could ask somebody from Love Canal, for example.
>> > And there's a mountain of evidence indicating it's false.
>> Specify. Go ahead and cite an example.
>Sorry.
Substantiation unspecified.
>  You're going to have to do your homework for yourself. 
I have, which is why I mention contaminants and the
inability of the body to cleanse itself of them
adequately as causes of abnormal cell growths.
> I will,
>however, point you in the right direction.  If you've got a solid
>background in biology, biochemistry, and genetics, as well as well as a
>good medical dictionary and access to a medical library, you might try
>looking in any basic oncology text.  Even some under-grad genetics texts
>discuss the fundamentals of neoplastic transformation and oncogenesis. 
>Many basic virology and toxicology texts deal with these issues as well.
Your point remains unsubstantiated.
Nowhere in such literature does anyone attempt to
claim that pollution can't be at least among the
causes of such disease processes, much less
actually offer evidence of such.
>If you don't have a very strong background in the areas I mentioned,
>your best bet would probably be to ask an M.D, a veterinarian, or some
>other science-based medical practitioner to discuss the issue with you. 
I've already discussed it with a former department
chair of a university medical school, which is why
I quoted what I did.
>Of course, if you know any geneticists, biologists, or biochemists, they
>would do quite nicely as well.  You might learn a lot by asking various
>"alternative" practitioners the same questions, but I advise against it
>-- because most of what you learn is liable to be incorrect.  ;-)
Your advice remains without substantiation.
>> So can =you= prove the stupid rock came from Mars?
>Nope.  Can't prove it at all.  However, having read a summary of the
>analysis to which it was subjected, I think its Martian origins have
>been established with reasonable certainty.
Specify.
>Good luck,
There is no such thing as luck.
_____________________________________________________________________________
|Respectfully, Sheila          ~~~Word Warrior~~~         green@pipeline.com|
|Obligatory tribute to the founding fathers of the United States of America:|
| This is not to be read by anyone under 18 years of age, who should read up|
| on history and the First Amendment to the Constitution, as an alternative.|
| *Animals, including humans, fart, piss, shit, masturbate, fuck and abort.*|
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
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Subject: Re: Mars Rock Crock!
From: =green@pipeline.com= (Word Warrior)
Date: Wed, 08 Jan 1997 16:21:57 GMT
"James S. Lovejoy"  wrote:
>This is word warrior who doesn't *need* the tiniest bit of evidence to
>make her pronouncements.
Inaccurate/inapplicable; fallacious regardless.
So you figure it's from Mars, too, no doubt, and
would have stated it had you not in your haste
to indulge fallacy forgotten to do so.
_____________________________________________________________________________
|Respectfully, Sheila          ~~~Word Warrior~~~         green@pipeline.com|
|Obligatory tribute to the founding fathers of the United States of America:|
| This is not to be read by anyone under 18 years of age, who should read up|
| on history and the First Amendment to the Constitution, as an alternative.|
| *Animals, including humans, fart, piss, shit, masturbate, fuck and abort.*|
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
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Subject: Re: easy formula needed soon
From: Doug Craigen
Date: Wed, 08 Jan 1997 09:57:08 -0600
Peyton Sherwood wrote:
> 
> This should be a simple one for you physicists..
> I need a formula that will graph the position of a projectile object
> over time, given its angle and initial velocity of projection...
> 
> the variable should be time, so basically I end up with a graph that
> shows the path of the ball (assume no air resistance.. its ok..)
> 
> if you MUST have the object mass and other stuff email me but I'm
> looking for a fairly simple answer..
I gather you don't have a first year text around anywhere.
For the horizontal motion, x = xo + v_h * t
where xo = initial position and v_h is the horizontal speed
For the vertical motion, y = yo + v_v - 1/2 * g * t^2 
Given the intial speed v and angle of elevation theta
v_h = v * cos(theta)
v_v = v * sin(theta)
|++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++|
| Doug Craigen                                                 |
|                                                              |
| Looking for words of wisdom by a Physicist?                  |
|    http://www.cyberspc.mb.ca/~dcc/phys/quotes.html           |
|++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++|
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Subject: Re: Re:Einstein's Constant
From: schmelze@fermi.wias-berlin.de (Ilja Schmelzer)
Date: 08 Jan 1997 16:20:41 GMT
In article <01bbfce0$5eed3b60$ee26efa8@jblood> "Lord of the Flies"  writes:
>> >Absolutes are ideals that do not really exist.
>> 
>> 1 + 1 = 2 absolutely, really.
>> 
>Thank you,  that was a good snap!!!  Absolutes can exist if we define them
>as possible.  Just as he mentions 1 + 1 = 2,  we say this is absolutely
>correct because we define it to be! (remember that math is a language of
>logic, therefor the above statement is "true" because we define anything
>derive via logic as "true" or absolute)
>IN the end, what is absolute and not absolute will depend on our
>assumptions.  Ask a bible pumper if God is absolute!  Einstein assumes as
>part of his theory that c is absolute.  Is he right?  that is something
>experimentalist are striving to disprove (they of course want to disprove
>everything! :)  )
I have tried to explain, you have ignored this part of my posting.  c
is absolute because 1m and 1s are defined in a way that it must be
absolute. Now. At the time of creation of SR the meter standard was
different, c was not absolute.
This doesn't forbid to disprove SR by experiment. If we would have
observed a non-constant speed of light in the old definition, we would
observe now a inconsistency between the old and the current definition
of the meter or the second which violates Lorentz invariance.  Two
different types of clocks which show different time dilation dependend
on velocity and SR/GR is out, because we can use these two clocks to
measure absolute velocity by measuring their difference.
Thus, the change in the definition of the meter, which makes c an
absolute constant per definition, only gives the problem of
falsification of SR/GR another formulation. 
Ilja
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Subject: Re: K12 Math Texts Need Improvement.
From: mstueben@pen.k12.va.us (Michael A. Stueben)
Date: Wed, 8 Jan 1997 12:13:00 GMT
Yes, Yes, Yes. Our math texts are terrible. In no math text I
know of can I find a mention of God's existence. 
---
              +----------------------------------------------------------+\
              | --From Michael Stueben: high school math/C.S. teacher    ||
              |   collector of mathematical humor and education theories ||
              |   E-mail address: mstueben@pen.k12.va.us                 ||
              +----------------------------------------------------------||
              \----------------------------------------------------------\|
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Subject: Re: Maths Competition
From: tordro@ifi.uio.no (Tord Kallqvist Romstad)
Date: 8 Jan 1997 14:01:23 +0100
Jacob Martin (jacobmartin@geocities.com) wrote:
: Sorry, no prizes here. But if you're a reasonably competant
: mathematician who feels pride in solving problems just for the sake of
: it and would like to see your name listed amongst others who have solved
: the problems, then check out my website (address below).
: As well as several warm-up problems, there are also 3 challenge
: problems, which when answered via email to me will entitle you to get
: your name listed.
: Good Luck!
: -- 
: Jacob Martin
: jacobmartin@geocities.com or try jake@scientist.com
: http://www.jmartin.home.ml.org
Are you sure this URL is correct? I get a 'file not found' error.
Tord Romstad
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Subject: Idle query: how good are math and science teaching outside the U.S.?
From: Michael Weiss
Date: 08 Jan 1997 08:41:37 -0500
One runs into frequent complaints in these two newsgroups that in the
United States, math and science teaching aren't what they used to be.
I refer here to the high-school and elementary school levels.
This may be true.  On the other hand, I ran across an essay in "The
World of Mathematics" by H.G.Wells bemoaning poor math instruction;
and I remember when I was in high-school myself, I happened upon
translation of a similar complaint from an ancient Egyptian papyrus.
Anyway, whatever the truth about the U.S., I'd be interested in
hearing impressions from other countries.  If you, kind reader, were
educated outside the U.S. and still reside there, what is your feeling
about the average level of math and science instruction in your
country?  Has it declined over the years?  How would you assess it
today?
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Subject: Re: New Bad Astronomy Addition (1/7/97)
From: hyyue@cse.cuhk.edu.hk (Teacher A)
Date: 8 Jan 1997 13:01:31 GMT
Phil C. Plait (pcp2g@karma.astro.Virginia.EDU) wrote:
> Hello net.folks:
> There is a new addition to my Bad Astronomy page:
>         "The Moon appears larger on the horizon because 
>          you are comparing it to foreground objects."
This is really bad, I mean the book didn't said out the main point. 
however, I do not said that the point that the book point out is wrong,
because if the moon is near the horizon, our brain will confuse about the 
real size of the moon. but, when this compare with the effect in physics, 
such as reflaction, this point is seem to be to minor one.
I gusses, Phil C.plait said this is bad is due to it only said out the 
minor point while the miss the main.
In science, if you do so, it is said to be bad.
 --
                 ·RÄRµ·°Ý¤p¥Õ¨ß»¡:  ½Ð§A§i¶D§Ú,§ÚÀ³¸Ó¨«¨º¤@±ø¸ô?
                   ¤p¥Õ¨ß§i¶D·RÄRµ·»¡:  ¨º­n¬Ý§A§Æ±æ©¹¨º¸Ì¨«!
Warmest,
Teacher A.
*************************
*                       *
* Pager number:77736858 *
*                       *
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           ,     ,'''  ;,          ,,;;,;;''         '         '    ,;;
      ; ' ';'    ; ,,  ;;        ;;'';,;'''';,                    ,;';;
       ;;,;'       ,,  ;          ,,;;',,  ,;'                  ,;'  ;;
        '         ,' ,,'         ,;;'  '' ''                   '     ;;
                      ';              ';;;                          ';
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Subject: Re: Harmonic Resonance
From: "Jonah Barabas"
Date: 8 Jan 1997 13:17:39 GMT
Matthew H. Fields  wrote in article
<5aue6b$6q4$1@news.eecs.umich.edu>...
> The very notion of music moving the emotions is foreign to some people.
> To others, the link between music and emotions operates powerfully
> along routes largely unknown in the west (could you pick out the
> raga of odiousness?).
That's probably the best anti-ethos example I know.  I can like the sound
of that sitar music, but I have no idea what they are trying to say in the
music.  I don't know the cues, because I lack the understanding of the
conventions.  Therefore, I may like it, but I don't get the extra-musical
meaning.
-- 
Jonah Barabas
http://www.tclock.com/jbarab.htm
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Subject: Re: Mars Rock Crock!
From: ~green@pipeline.com~ (~Word Warrior~)
Date: Wed, 08 Jan 1997 12:52:15 GMT
patrick@gryphon.psych.ox.ac.uk (Patrick Juola) wrote:
>In article <5api57$pvv@dropit.pgh.net> green@pipeline.com writes:
>>JohnAcadInt  wrote:
>>>It might be interesting, for example, to offer prizes 
>>>for a cancer cure. Say, a billion dollars to the first
>>>team to crack it. [ I hope nobody is going to complain
>>>that we couldn't measure the results! Ed.]
>>
>>People properly nourished in clean surroundings won't
>>get cancer at all.
>Clean surroundings, of course, being defined as excluding all radiation
>such as sunlight.
That certainly wouldn't be my definition.
>First, that's not a cure, that's a preventative.  Second, it's not
>a preventative as the treatment is more injurious than the disease.
Your substantiation for that would be _?_
_____________________________________________________________________________
|Respectfully, Sheila          ~~~Word Warrior~~~         green@pipeline.com|
|Obligatory tribute to the founding fathers of the United States of America:|
| This is not to be read by anyone under 18 years of age, who should read up|
| on history and the First Amendment to the Constitution, as an alternative.|
| *Animals, including humans, fart, piss, shit, masturbate, fuck and abort.*|
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
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Subject: Re: Does Apple (Apple) = Apple?
From: JC
Date: Wed, 08 Jan 1997 13:30:57 +0000
Goddess wrote:
> 
> In article , Rebecca Harris
>  writes
> >In article , STARGRINDER 
> >writes
> >>
> >>
> >>get a life!
> >
> >Hear Hear!
> 
> Yeah! I don't see why they bother with these posts on here. Why don't they post
> it on some maths chat group?
He does. We're not too keen on his postings either.
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Subject: Re: Harmonic Resonance
From: "Jonah Barabas"
Date: 8 Jan 1997 13:41:33 GMT
Jonah Barabas  wrote in article
<01bbfd66$2d3bb5c0$ea6e79a8@dbryson.mindspring.com>...
> Matthew H. Fields  wrote in article
> <5aue6b$6q4$1@news.eecs.umich.edu>...
> ..raga of odiousness...
Just remembered that this is being cross-posted in physics and philosophy
newsgroup.  A raga is a system of "things" in Indian music that are
something like scales.  Each one of these "things" symbolizes an
extra-musical idea.  It is basically like a musical language in virtually
every sense of language.
Just wanted to define that for the non-composing physicists and
philosophers to aid in the discourse.  Please feel free to do the same for
us when using quantum physics or obscure philosophical constructs.  Also,
if any of my fellow composers wish to add to my explanation, please feel
free -- I have only a passing knowledge of ragas.
Jonah Barabas
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Subject: Re: Does Apple (Apple) = Apple?
From: Rebecca Harris
Date: Wed, 8 Jan 1997 17:05:47 +0000
In article <5zkcsEAO+P0yIw9n@segl.demon.co.uk>, Goddess
 writes
>In article , Rebecca Harris
> writes
>>In article , STARGRINDER 
>>writes
>>>
>>>
>>>get a life!
>>
>>Hear Hear!
>
>Yeah! I don't see why they bother with these posts on here. Why don't they post
>it on some maths chat group?
Is there such a thing???..........
-- 
R33BOX
http://avnet.co.uk/tony/rebecca/
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Subject: Re: 1 / 2^.5 or 2^.5 / 2?
From: Erik Max Francis
Date: Wed, 08 Jan 1997 09:11:12 -0800
Dave Seaman wrote:
> What you wrote is definitely not a floating point expression in
> Fortran, and probably not in BASIC.  The C equivalent, pow(num,1/2),
> does not use floating point division for the exponent, either.
No, you'd have to write 
    pow(num, 1./2.);
or better yet, 
    pow(num, 0.5);
since you'd still have integer division with 1/2, which yields 0, not
one-half.
-- 
                             Erik Max Francis | max@alcyone.com
                              Alcyone Systems | http://www.alcyone.com/max/
                         San Jose, California | 37 20 07 N 121 53 38 W
                                 &tSftDotIotE; | R^4: the 4th R is respect
     "You must surely know if man made heaven | Then man made hell"
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Subject: Re: EMP effects in water
From: "Robert. Fung"
Date: Wed, 08 Jan 1997 09:22:05 -0500
Jim Carr wrote:
 >  Wasn't there a bit of paranoia in the 60s that the Soviets were still
 >  using tubes, not because they were too backward to use solid state
 >  devices, but because they were better hardened against EMP?
 > 
     Isn't the Space Shuttle using core memory for a similar
     reason ?
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Subject: Re: Coincidence ! (or what ? :-)
From: thomasl283@aol.com (ThomasL283)
Date: 8 Jan 1997 17:55:30 GMT
> Keith Stein wrote:
>>In article , "Thomas N. Lockyer"
> writes
>>>The mass ratio for both the proton and neutron can be calculated from
just the 
>>>fine structure constant, using a geometric model.  It's on my web page.
Set 
>>>your computer to double precision and check it out!
>>>Regards: Tom:  http://www.best.com/~lockyer/home.htm
>
>>Thanks Tom.
>>
>> I very rarely go surfing,but this I GOT TO SEE. It sure sounds GREAT!
>>Just what I was after. Thanks Tom. 
    >    Sorry to say this Tom, but couldn't find any computer program on
>your web page, but perhaps I missunderstood. If you really do have a
>program which derives the proton/electron mass ratio, I would really
>like to see it. Could you perhaps post it onto this thread Tom ?
-- 
>Keith Stein
Keith; The equations are summations and you will need to insert them into
some math software
that will accept them.  I use Mathcad and simultaneously calculate both
dimensionally and
numerically.  I am not a mathematician, but I find that the math software
is a great leveler.  There
is a computer program in the book,  but it is 400 lines of code and does
the summations as a loop
subroutine.   
This news group format is not good for typing equations, that is why they
were put up on the web
pages.   I would rather refer to the web page, for the equations,  rather
than clutter the news
group with long posts.
Several people have used the information on the web page and have said the
model works as
advertized.  By doing the work, it makes the results more dramatic for the
reviewer.
BTW: Experimentally, the final ultimate decay products for any decay are
just electrons and
neutrinos (and the stable proton).  This model shows that good results are
possible by reversing
the process.  The proton and neutron models are composed of electrons and
neutrinos, and are
the first models to ever give the mass and difference in mass between the
proton and neutron.
Further, the model  requires the known decay electron and neutrino when
the neutron decays into 
a proton.  Not only that, but the model's scaling gives the mass
contribution of the decay electron
and neutrino, exactly.  The decay includes the electrical potential energy
between the electron and
neutrino, when  part of the neutron, thus giving the model's  approach
credibility.
There is no question that this model is  A  correct model,  the computer
tells us that. The only
debate is; is this model  THE' correct model.  
The standard quark model is no competition, because the quark model 
simply does not work at
this level of ordinary matter. 
Regards: Tom.  http://www.best.com/~lockyer
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Subject: Re: Mars Rock Crock!
From: bob tarantino
Date: Wed, 8 Jan 1997 14:46:26 GMT
Leonard Timmons wrote:
> 
> Science is not digital, but analog.  Some science is very good at
> describing the world and predicting its future state.  Other sciences
> are not very good.  By most any measure the science of psychology
> when used to describe and predict the behavior of human beings is
> not very good.  It is so bad that it fails my "good enough to
> pay attention to" test.  Psychology is now where astronomy was
> before the invention of the telescope.  You should take its descriptions
> of human beings and their mental states with a chunck of salt.  You
> should take its predictions of human behavior with a crystal about
> ten times as large.
Wil Milan wrote:
I wasted a couple of years majoring in psychology, so I probably know
the holes in psychology better than most. And there is much to criticize
about modern psychology. Some aspects of it are quite well established
and quantifiable, however, and modern IQ tests are much better in this
regard than you may realize. In fact, the repeatability and
verifiability of IQ measurements are probably much better than the
determination of distances to distant galaxies, and we definitely still
consider that science.
I have some real misgivings about IQ tests and how they're interpreted
and used, but it's not all junk either.
Wil Milan
======================================================
I believe that this topic is directly related to how people relate to the
possibility of Extraterrestrial life.  One might ask a person "If jack's son
is my son's father, how am I related to Jack"?  The person who answers "his
son" would probably have a higher IQ that most.  However, how many could
intuitively see the symbolism of the pathway painted in the background of the
"Mona Lisa" by DaVinci?  Are they related?  Logical and creative reasoning are
very different and directly related to the determination of the validity of
evidence.  Consider the following from a recent issue of "Psychology Today":
"Creative people alternate between imagination and fantasy, and a rooted sense
of reality".   "...Great art and great science involve a leap of imagination
into a world a that is different from the present.   The rest of society often
views these new ideas as fantasies without relevance to current reality.  And
they are right.  But the whole point of art and science is to go beyond what
we now consider real and create a new reality.  At the same time, this
‘escape’ is not into a never-never land.  What makes a novel idea creative is
that once we see it, sooner or later we recognize that, strange as it is, it
is true.  Most of us assume that artists-musicians, writers, poets,
painters-are strong on the fantasy side, whereas scientists, politicians, and
business people are realists.  This may be true in terms of day-to-day routine
activities.  But when a person begins to work creatively, all bets are off."
The difference here is between divergent and convergent thinking, and I
believe that IQ tests are now being re-written to adjust for these different
types of approaches.  Think of the brilliance of Leonardo.  His genius was not
limited to the left side of his cerebellum.  His drawings of the internal
structures of the human body are still in use today, not to mention those of
water flowing that show details now proven with high speed photography.  One
of the NASA scientists who was working on the Mars rock took pictures of it
taken by electron microscope home and asked his teenage daughter what she
thought it was.  She replied "bacteria". 
-bob tarantino
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Subject: Re: Current from a Capacitor.
From: Alan \"Uncle Al\" Schwartz
Date: 8 Jan 1997 16:37:59 GMT
Joseph Mazeau  wrote:
>Hello all, I'll make this brief. How would one determine the current
>output of an electrolytic (pulse-discharge) capacitor in amps given the
>cap's microfarads and the voltage? If I need more information on the
>capacitor, (i.e. resistance, whatever) please let me know and I will find
>the needed info.  I need to figure out the current so I can plug it in to
>a series of equations. Please reply if you need more information or if you
>have an answer for me. Thanks much. :)
Look up LC, RC, and LRC circuits.  Look up "impedence" and "impedence 
matching."  What you get depends upon where it goes and where it 
originates.
-- 
Alan "Uncle Al" Schwartz
UncleAl0@ix.netcom.com ("zero" before @)
http://www.ultra.net.au/~wisby/uncleal.htm
 (Toxic URL! Unsafe for children, Democrats, and most mammals)
"Quis custodiet ipsos custodes?"  The Net!
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Subject: Re: *** CRESCENT MOON VISIBILITY Thu 9 Jan 1997, evening ***
From: Alan \"Uncle Al\" Schwartz
Date: 8 Jan 1997 16:42:57 GMT
mnd@ciao.cc.columbia.edu (Mohib N Durrani) wrote:
>                        Bismillah hir-Rahman nir-Rahim
>       ( In the name of ALLAH, the Most Beneficent, the Most Merciful )
> 
>        THE MUSLIM STUDENTS' ASSOCIATION (MSA) of COLUMBIA UNIVERSITY
>          102 Earl Hall, Columbia University, NEW YORK, N.Y. 10027
Get a good dictionary.  Look up "fetish."
Sterculius is giggling; so is Zool, the worm who forever eats his tail, 
and the big stack of tortoises - each and every one of them!
-- 
Alan "Uncle Al" Schwartz
UncleAl0@ix.netcom.com ("zero" before @)
http://www.ultra.net.au/~wisby/uncleal.htm
 (Toxic URL! Unsafe for children, Democrats, and most mammals)
"Quis custodiet ipsos custodes?"  The Net!
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Subject: Re: Coherence Length and Table Vibration
From: "J. D. McDonald"
Date: Wed, 08 Jan 1997 12:13:10 -0600
Walter Polkosnik wrote:
> 
> Is there a quick and simple technique for measuring the coherence length of
> a laser? I know of the Michelson interferometer technique, I'd like
> to get a detailed description of that technique or another. If anyone could
> provide me with a reference to a text, paper or even web page, I'd
> appreciate it.
Interferometers are suitable if the coherence length is short,
a couple of meters or less. If it is longer than a foot or two,
then you can use electronic techniques: you shine it on
a fast enough detector diode, then digitize and fourier
transform the resulting signal. This latter method certainly
is quicker and simpler.
Doug McDonald
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Subject: Re: Time and its existance
From: Dave Monroe
Date: Wed, 08 Jan 1997 13:14:27 -0500
D J Green wrote:
> This is a contradiction, and shows that outside and before the Universe,
> nothing could exist. It's my way of disproving the existence of God
> incidentaly, since nothing could not have formed the Universe from the
> outside.
> 
Interesting how two people can perceive the same situation
and draw two opposite conclusions.  I've always thought
that since some force had to set the universe in motion
in the first place, it would have to have been God.  The
order to 'start' the universe would have to have come from
outside - assuming there was ever a time it did not exist.
--
David S. Monroe                          David.Monroe@cdc.com
Software Engineer
Control Data Systems
2970 Presidential Drive, Suite 200
Fairborn, Ohio 45324
(937) 427-6385
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Subject: Re: Harmonic Resonance
From: gtaylor@shell1.msn.fullfeed.com (Gregory Taylor)
Date: 8 Jan 1997 14:56:44 GMT
In article <5aue6b$6q4$1@news.eecs.umich.edu>,
Matthew H. Fields  wrote:
>Actually, evidence has it that "Aboriginals" of other cultures who have
>no prior exposure to Western music do *not* catch on to it right away.
Some emailed me to ask if I was the person who'd been going on at some
length on the notion of "universal" musical features over in rec.music.
classical a while back. Reading through this thread, I guess I know why
they'd ask. I beg the indulgence of those of you who've seen this before
(seems like I wind up posting it once a year), but it seems to me that
this is somewhat germane to the point that Matt is making (he's entirely
right, incidentally - there's a nice story about a Balinese audience
hearing their first Beethoven told by Colin MacPhee in (I think) "A
House in Bali" in which the comment at length *not* upon the features of
the work, but what it lacks - a drummer to provide some order and a little
refinement of the soul on LvB's part (as evidenced by the chaotic and
"wailing" quality of the work). There's also the story about a missionary
bunch in Shanhai trying to figure out why their congretations had "Yes,
Jesus Loves Me" down pat but seemed unable to recognize the "greatness" of
"Guide Me, Oh Thou Great Jehovah...."
One of the quickest ways to look at "universal" features is to listen across
cultures. A questionsposed by this idea that we judge a work of music only
by some appeal to a vague notion like "beauty" which is an "objective"
quality of "what we hear" winds up touching on what happens when we 
"hear" work whose codes are hidden from us by cultural difference. Of course,
our own experience tells us that we can really enjoy or be moved by all kinds
of thing which are *way* outside of our cultural frame of reference - work
which, if we're pretty suspicious, might actually have nothing to do with the
same criteria for quality that a "native" listener might "hear." To the extent
to which we might be uncomfortable with the idea of simply pitching out any of
those things we'd need to know to modify our judgments of quality, a likely
course to pursue would be to take the notion that we "just hear" something,
and to then wonder about what features of the "music" we listen to might be
thought of as somehow "universal." In order to do this, we look at musical
behaviour as it exists in the world. The other approach is to wonder about a
kind of universalism of perception (i.e. music cognition). I'm sure that
there are lots of other folks better qualified to discuss this than me. But I
am interested in and have done some study on the way that the question of
this idea of universals has been talked about by Ethnomusicologists; that
study has had a considerable effect on how I think about *lots* of different
kinds of human activities.
A while back, there was a similar kind of discussion over in 
rec.music.classical which forced me to do some reading and dig out some old
lecture/paper/presentation notes from the days when my beloved was doing her
Ph.D. at Cornell. It looks like it dates from '82 or '83. While the historical
portion is probably a good summary of the notes from the field, it ought to
be pointed out that this is in no way exhaustive, and could maybe use an update.
I owe a fair amount of credit to some presentations by Merriam and
Bruno Nettl, who get quoted extensively here. It is *they* who are the
thinkers here, with me merely the amanuensis. I've run the stuff here past 
some folks who're still quite active in the field, and the feedback I got is
that it's still a pretty reasonable account of the status of the idea of 
"universals" as hunted for by the larger community of Ethnomusicology. One
friend claims that there's a back issue of the journal "Ethnomusicology"
from the late 70s/early 80s dedicated to these issues.
Of course, the interesting thing to contemplate is that our Ethnomusicological 
forebearers went out into the world to gather data for and (they thought)
to codify precisely the kind of wooly "objective" features that we'd need to 
have to make sweeping claims about the "universal" features of a given musical
feature. They were, in fact, *sure* it was out there when they left. However,
they actually went out and looked, and what they found altered their views.
As it started out, the idea of musical universals was a seductive view - while
all the customs of the world multiplied and got strange and so on, we could
always fall back on this notion that "music" was intelligeable to *everyone.*
The guiding assumptions of this suggested that there was only one set of
"universal" rules of music [at that time, they were thought to be rooted more
in acoustics rather than neurons] which were universally valid - either because
all "other" kinds of music were either degenerative (or generative) stages
or because X was the only "true" music.
But that's the late 19th century [Romanticism, Colonialism, cultural imperial-
ism, etc.]. By the twentieth century, the data started to come in from the 
field in earnest. It continues to. By the time we start getting the field data
back and the major figures of the field in the early-mid 20th c. start 
writing, the ethnoids look at the data and - surprise! - they don't buy
the notion. This includes Sachs, Jaap Kunst, Merriam, Hornbostel. In fact,
it's not until really the late 60s/early 70s that ethnoids like Mantle Hood
and John Blacking really got into things again. In part, that return to 
the question is prompted by developments *outside* of the data itself, most
notably linguistics as Noam Chomsky did them,  Structuralism, etc. Some folks
might say that the Ethnomusicology of the 1960s couldn't happen until the
antiuniversalism which arose from the field work of the early part of the
century had established itself and then began to overstate its case, with the
new interest being refined and restated.
It's safe to say that folks who looked into the subject in the the 60s found
themselves in a similar position to those folks who discuss the experimental
evidence which suggests that the brains of men and women are hardwired
differently; In addition to having some difficulty building from the low
level to high level of function, they additionally had to account for a fair
amount of empirical data that undercut a strictly determinist view - it simply
appeared that there was as great a range of behaviour and competence *within*
the groups of like-wired individuals as *across* the boundaries, and that
the cultural or environmental "non-universals" seemed to have much more to
do with that. The "universals," once discovered, just didn't get folks the
distance that the Universalists claimed.
If, as ethnomusicologists during this century have had to do, you wind up
with data that doesn't support the naive 19th century Universalist view of music
in which different kinds of musical behaviour are more or less waystations on
the way to the [fill in dominant bias], what problems obtain? It seems like
there are two basic problems:
1. Coming up with some kind of conceptual framework that's sufficiently broad to
be useful across any imaginable cultural or temporal difference.
2. Coming up with the specific thing that all musics have in common.
As they did it, ethnomusicologists wanted to find those features
that are ubiquitous, actually *fit* the definition of music, and as a final
bit of work, exclude what could be regarded as music but isn't actually done.
In short, define the outer boundaries and then tell us what's really in the
circle as empirically verifiable human practice. That's rather a tall order,
and might suggest why one would be circumspect undertaking such an activity.
In the anecdotal sense, I find it much simpler to begin from the simple
observations that definitions are done by persons, and to look at the community
and context in which human activity occurs; much simpler.
I'd like to return for a minute to the "ubiquity" aspect of the discussions that
ethnoids have about musical universals. What us poststructuralist types would
call a "totalizing discourse" would train their heat seekers on that right away
in terms of talking about what it means. Are those universals things which are
present in every instant of musical sound [that obviously is connected to the
definition of music]. Having set up the universal, one ought to be able to
instantly distinguish it from all other kinds of sound - silence (!?), speech,
insects, machinery, wind. Even if you don't believe the anecdotal evidence of
your own ears [which are occasionally fooled by mimicry of any number of sorts],
all that data collecting from up and down the world seems to add up to nearly
every ethnoid I ever met as "not bloody likely" for an outcome.
Beating a hasty and well-advised retreat, the bruised universalist might
recoup by asking whether there is anything which is present in every example
of musical behaviour. The basic units. Note that we're not going for the grand
sweep of knotted ganglia; all we want is a list of what everyone who 
says they do music has in common with everyone else. I resort again to my old
lecture notes from this symposium on musical universals that must date from 
when my wife was at Cornell. The list is even more dreary than I remember it,
and I'd really hoped that I'd written down some of the more interesting
exceptions to what seemed to me at the time to be patently obvious things
that everyone did. From the vast store of Ethnomusicological data, here's a
reasonably agreeable list:
More or less clearly marked ends and beginnings.
Variable levels of simplicity and complexity.
The musical thing is composed of sub-things.
There is always more than one minimal unit [Cage has three sections in 4'33"]
The sub units may be exchanged for one another to make new things.
Some redundancy prevails, some repetition, some variety, and that groups
of persons practicing these behaviours articulate them by means which may
slightly resemble texture, rhythm, or sequences of pitched or non-pitched
material [this was a hotly contested issue, particularly when one of the panel
used the word "melody" and  there was considerable anecdotal discussion
about whether or not culture X has a concept of "melody."]
I saved the most interesting for last, and my notes are a little cryptic,
so I could be off a bit. The panel seemed to agree that there was some level
of simplicity and complexity beyond which the large majority in a kinship group
or culture do not venture; There seems to be a widespread tendency for some
kind of  perceptual bandwidth - even if a culture's definition of musical 
behaviour is broad, many do not venture to the edges of the definition. 
There's a third approach which follows the sensible pullback from *that
outpost of universalism, and at that point I can start to pay more serious
attention to it. 
The battered Universalist draws back, wisely regroups, and heads for what
might be seen as safe harbor; Are there any sorts of things that are
found in each musical system? [we're talking about plural *musics* here,
of course] Are these musics or [if you want to go to the wall for a definition
that describes music as a language (not me, boss. That lifeboat's *way* too
leaky)] dialects somehow in some way alike? Are there any individual 
characteristics which are present in all of 'em? They don't have to be
found in "every" musical behaviour, just within the broad categories of some
"group" [I'll avoid the rows that ensue the moment one starts creating
"boundaries" for social groups and "run roughshod" over what I think is
an interesting and valid line of discussion].
I think that this is more or less the view that ethnomusicologists began to
pursue in earnest when they returned to thinking about "universals" in the
70s. At this point, it ought to become clear *why* it might be possible to
describe the possibility of cross-temporal and cross-cultural features in
a less boneheaded manner; it quite simply allows for the discussion of
both "acoustical" and "behavioural" parts.
So, what appears from the fieldwork on *this* one? No as much as one might
imagine, actually; here, from my copious notations, is what shows up:
1. It would appear that all cultures have singing.
2. In the vast majority of those cultures, there's a primary melodic interval
   that bears a vague resemblance to something in the territory of a major
   second [and I'm playing *extremely* loose with observations about tuning
   here in the interests of charity] - that is, between 75 to 250 cents
   somewhere. It's actually rather rare to even find cultures in which
   pieces progress exclusively by thirds or fourths, or half or quarter
   tones. In fact, the musics of the Native South American populations are
   of interest precisely because *they* do.
3. Pieces tend to descend at the end. The data suggest that they're not
   all uniform in terms of their beginning, however.
4. Some internal variation and repetition occurs.
5. They have a structure based on the length of events and dynamic stresses.
Not exactly earth-shaking, huh? But by now, we're starting to talk about
the observations of "behaviour" as a social phenomenon also. So, what kinds
of "universals" in the sense I defined above might ethnoids agree on in 
terms of the ways that people in groups conceptualize music? Obviously,
the literature I'm familiar with discusses and disputes on *this* kind of
question at great length. Here's what seems to be a short and relatively
uncontroversial list:
1. "Musical behaviour" is associated with the supernatural.
2. "Musical behaviour" is composed of artifacts or objects of units which
   tend to be uniquely identified. This identification takes a dizzying 
   variety of forms; by performer, by ritual, by place, by creator, by
   object, by title. One doesn't merely sing. One sings *something.*
3. There are associations made between speech, dance, and musical behaviour.
4. When viewed as self-contained system, various musics have some common
   properties in terms of the systems themselves; differential levels of
   musicality [this is considerably broader than the talent/profession
   aspects of the question], tradition-carrying networks, and something
   resembling the idea of a "repertoire."
And at *this* point, the clever and well-read ethnoid back from the field or
at least cognizant of the rest of the world starts studying the extent to 
which the social dynamics of musical behaviour as a cultural activity start
doing interesting things like, say, producing bodies of work which run 
contrary to the "universal" "acoustic" phenomena I mentioned earlier.
I think that some interesting work in the field involves looking
at the ah... "statistical universals" [we all more or less do this some of
the time when we say we are talking about music]. I came away from looking 
and reading with the rather simple conclusion that the looking at musical
behaviour as a social construction tended to take me much farther then
building my edifice out of the amazing "universals" which all that field 
work brought home during this century. That's (in part) how I got here, and
it's also one of the reasons that I tend to get a bit itchy when I hear
talk which presupposes universal effects..
>I suppose that person has never heard a song, been to a movie with a
>dramatically linked soundtrack, or seen any television.
>
>The very notion of music moving the emotions is foreign to some people.
>To others, the link between music and emotions operates powerfully
>along routes largely unknown in the west (could you pick out the
>raga of odiousness?).
>
>
>-- 
>Matt Fields  URL:http://www-personal.umich.edu/~fields
-- 
When I pronounce the word Future,/the first syllable already belongs to the
past./When I pronounce the word Silence,/I destroy it./When I pronounce the
word Nothing,/I make something no nonbeing can hold./ (Wislawa Szymborska)
Gregory Taylor WORT-FM URL:http://www.msn.fullfeed.com/~gtaylor/RTQE.html
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Subject: Re: Time and its existance
From: D J Green
Date: 8 Jan 1997 15:39:50 GMT
n2.dan.servtech.com> <59v7vq$mlo@news-e2c.gnn.com> <32ca943b.261631488@news.adnc.com>
Distribution: 
: >merk077@servtech.com (Gregoire) wrote:
: >Every process appears to be change taking place over time, and I see
: >no reason not to include mental processes (such as conscioussness).
: >At one moment, your brain is in one state, at a later moment, it is in
: >a different state.  The sequence of states constitutes the mental
			^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
: >process or train-of-thought (or conscioussness).
   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Does that mean to say that a computer thinks because the precosses inside
it follow after each other?
This statement is dangerous (and strictly not physics) and I believe it to
be incorrect. I think consciousness is more than just a sequence of
events. I believe the events are controlled by a truly random system (QM)
and associated Data retrieval. A 'train-of-thought' does not appear to
describe the random factor but it does demonstrate the necessity for time.
Time is imperceptible. It permiates  everything and yet is undetectable
but measureable. It can be observed, but only by a concious observer and
the concious observer cannot observe a single unit of time because it is
infinty divisible. The only way to observe time standing still is to take
a concious mind (lets say Data from Star Trek) and slow it's thought
processes down to zero. Only then will zero progression be noted, but
can't because progression is needed to observe the lack of progression.
This is a contradiction, and shows that outside and before the Universe,
nothing could exist. It's my way of disproving the existence of God
incidentaly, since nothing could not have formed the Universe from the
outside.
DavidG
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Subject: Re: Science Versus Ethical Truth.
From: mlerma@math.utexas.edu (Miguel Lerma)
Date: 8 Jan 1997 15:33:47 GMT
Rebecca Harris (rebecca@tharris.demon.co.uk) wrote:
[...]
> What is was the point in writing all that "stuff" about god???
> I am an athieist(probably wrong spelling)But I believe that everyone is
> allowed their own opinion......So why preach about "the wonderful and
> powerful god"?
I can see that you are posting from UK. I have spent three years 
in the USA (I am from Spain) and never imagined before the level 
of religious fanatism I would find here. This is something that 
a normal citizen of a typical western country would never suspect 
before arriving to the paradise of religious nonsense. The problem 
is that these people is supporting such a deal of nonsense that 
they cannot get ride of their obsession to get some kind of support 
that help them to overcome their contradictions. But people just 
plagued by their own contradictions are the nicest ones. You should 
see those who overcome their obsession by engaging themselves in a 
restless persecution of "heretics" and unbelievers. The only thing 
that saves this country from more witch hunts is its diversity and 
the First Admendment that arises from it. Now more than ever I am sure 
that the First Admendment does not survive because American people are 
high in tolerance, but because they are diverse and do not wish to be 
victims of other's intolerance. 
Miguel A. Lerma
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Subject: Re: circuit diagram for bathtub electrocution?
From: Chris Crochet
Date: Wed, 08 Jan 1997 13:19:37 -0800
Jan Zumwalt wrote:
> 
> I found this discussion quite interesting as I have chosen to add a section
> on electronic safety to my web. Misconceptions such as are found here could
> prove potentially quit dangers!
> 
> 1) Only pure distilled water is non conductive, tap water makes a very good
> conductor due to contaminants and mineral content. Therefore a person in
> contact with an electrical device in water is as good as touching it.
Not always.  Baton Rouge tap water is, in fact, pure enough that it is
an extremely poor conductor.
> 2) Electricity does not have to travel "through" a person to be lethal.
> Most things including our bodies have capacitance, death comes quit easily
> from "charging". ^0 cycles is particularly dangerous since human
> capacitance is very responsive to this frequency.
> 
> 3) While a direct current of 200ma is considered the minimum current
> necessary DIRECTLY across i.e. in contact with the heart, to kill in
> practice it takes several amps externally to become lethal. There are
> exception of coarse. For example I saw an electrocution killed from bending
> over a 110v light switch and the contacts touched his forehead. He died in
> several minutes. This is a good example of electricity NOT traveling
> THROUGH the body, as he was on a dry tiled floor!
He must have been contacting a ground *somewhere*.  120Vac cannot kill
you by contact with one wire.  One wire fatalities are only possible
with much higher voltage or frequency sources.  Note that concrete and
similar compounds are often, depending on composition, very *good*
conductors, contrary to popular belief.
> 3) Even if a person does not die instantly from immediate electrocution,
> they very may well soon die there after. As we all know, electricity
> travels the path of least resistance. Small voltages travel less than an
> inch or two (say 400V) before resistance does them in - at best traveling
> through nerve fibers which make great conductors.
> 
> On the other hand high voltages prefer to penetrate to the bone marrow
> which then offers even lower resistance. I do not know the reason for this
> and except for the facts would consider it unreasonable. Now, when a person
> receives a high voltage jolt(guessing 1000+) they very well may live, that
> is for 5-7 days. The bone marrow is completely killed and the body
> degenerates from lack of blood cell production. I have seen persons that
> have received 2000v jolts that severed their fingers (thus saving their
> lives) but required amputation of both legs and arms due to bone marrow
> destruction.
Actually, the most common cause of post-electrocution death is liver and
kidney failure.  When tissue of any kind is damaged by electricity, it
releases a gummy compound (I forget the name) that, eventually, will
clog those two organs up and kill them.  
> Epilog
> The electric chair has drawn considerable criticism for its humanness
> because it uses about 500V. Onlookers and medical professional attest that
> death frequently is excruciating and sometimes prolonged. There have been
> instances of persons receiving 3-5 shocks of 10-15 seconds with apparent
> conscience.
> 
> I hope this shows the seriousness of safety shows
> A persons
> --
> Hope this helps!
> ----------------------------------------------
> Jan W. Zumwalt - Engineer
> Computer Information Systems
> zumwalt@alaska.net
> http://www.alaska.net/~zumwalt
> *****************************************************************
> * Beware the man of one book.                 - Chinese proverb *
> * The only real equality is found in a cemetary.      - German  *
> * The one thing not so common, is COMMON SENSE!            -USA *
> * Beware the opinion of a person who has used only one OS!  -JZ *
> *****************************************************************
> 
> bwsmith@cadsmith.com wrote in article <5atduv$sbo@mozart.jlc.net>...
> : In article <5arhiv$o0b@mozo.cc.purdue.edu>,
> :    laird@puritan.ecn.purdue.edu (Kyler Laird) wrote:
> : >Over lunch, the topic of bathtub electrocution came
> : >up (from a scene in a movie).  I've thought about it
> : >a few times, but I've never gotten a good grasp of
> : >the circuit involved.
> : >
> : >O.k....let's say that you're in an insulated (enamel-
> : >coated?) bathtub with (grounded) metal drain.  The
> : >tub is filled with water to some height.  A non-
> : >waterproof device connected to 120VAC mains is dropped
> : >in the tub with you.  What happens?
> : >
> : Interesting problem.  However, most newer homes now being built with
> : fiberglass tubs and plastic drain pipe.
> : Is there an alternative method perhaps delivering the voltage thru the
> supply
> : pipes, say when the subject reaches for the faucet?  How about closing
> the
> : circuit in fiberglass tub? Could you employ wiring to metal towel rack
> : adjacent to tub?
> :
> : BW Smith
> :
> : >As an extreme, consider a person standing in the
> : >tub at the opposite end from the drain.  The water
> : >is ankle-deep.  The electrical device is turned on
> : >and placed right on top of the drain.  I wouldn't
> : >expect a fatal outcome.
> : >
> : >It seems to me that in order to get a fatal
> : >outcome we need to get current to flow through the
> : >person's heart.  Providing lots of low-resistance
> : >paths to ground which *don't* go through the heart
> : >is not going to cut it.
> : >
> :
> : ================================================
> :    CADSmith Studio~~Design Services For The Building Industry
> :    http://www.cadsmith.com/   ====  email: bwsmith@cadsmith.com
> :
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Subject: Re: Time and its existance
From: Hermital
Date: Wed, 08 Jan 1997 13:23:35 -0800
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Date: Wed, 08 Jan 1997 12:59:47 -0800
From: hermital@livingston.net (hermital)
Reply-To: hermital@livingston.net
Organization: Consciousness/Holographic Paradigm
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Newsgroups: sci.physics,sci.skeptic,sci.physics.relativity,alt.sci.time-travel
To: Dave Monroe 
Subject: Re: Time and its existance
References: <511vlk$g6p@hil-news-svc-3.compuserve.com> <01bbe547$3d5d8b40$4b0d44ab@prsingh-pc.cisco.com> <32AC5F38.148@space.mit.edu> <01bbe79d$612c5e40$bad044ab@prsingh-pc.cisco.com> <58nc7i$dhp@usenet.rpi.edu> <32b3dd69.10131602@news.demon.co.uk> <58s7it$lir@usenet.rpi.edu>  <58uutc$q7i@usenet.rpi.edu> <58v7us$hht@trojan.neta.com> <58vb7v$qoq@usenet.rpi.edu> <32b5b39e.3988264@netnews.worldnet.att.net> <59q63r$q2@news-e2c.gnn.com>  <32D3E403.5059@cdc.com>
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On Wed 1/8/97 13:14 -0500 Dave Monroe wrote:
> 
> D J Green wrote:
> > This is a contradiction, and shows that outside and before the Universe,
> > nothing could exist. It's my way of disproving the existence of God
> > incidentaly, since nothing could not have formed the Universe from the
> > outside.
> >
> 
> Interesting how two people can perceive the same situation
> and draw two opposite conclusions.  I've always thought
> that since some force had to set the universe in motion
> in the first place, it would have to have been God.  The
> order to 'start' the universe would have to have come from
> outside - assuming there was ever a time it did not exist.
There is, of course, at least one other possibility, Dave.
The scientifically rational Holographic Paradigm describes our
sub-light-speed material universe as a hologram within a hologram within
a hologram, thus the universe did come from something, there was a time
that our universe did not exist, it was started from outside and that
which human beings call God is now also known to be a synergistic
hologram.
-- 
Alan
When you have a quiet moment, seek egolessness and remember that the
human body and nervous system are merely the organic user interfaces
that interpret holonomic materiality for a unique transcendental entity
that emerges reciprocally within the pre-existing vital energy of
uncreated absolute pure being.
--=_mh.ndn.12d7.0254.32d3ee6c_=--
--------------B5B33ACF20--
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Subject: Re: Mars Rock Crock!
From: msaroff@moose.erie.net (Matthew Saroff)
Date: 8 Jan 1997 19:24:46 GMT
bob tarantino (robert.tarantino@bethlehempa.ncr.com) wrote:
--SNIP-- of discussion of IQ tests
: types of approaches.  Think of the brilliance of Leonardo.  His genius was not
: limited to the left side of his cerebellum.  His drawings of the internal
--SNIP--
Hi,
	A couple of corrections, as this was posted to sci.skeptic.
1) It's the Cerebrum, not the Cerebullum where higher thought occurs.
2) The lateralization of Brain is not an accurate model.  It only applies
to Americans who have extremely severe forms of epilepsy.  Lateralization
of brain functions varies greatly form individual to individual, and seems
to influenced largely by developmental experience.
--
--  Matthew Saroff| Standard Disclaimer:  Not only do I speak for
       _____      | No one else, I don't even Speak for me.  All my 
      / o o \     | personalities and the spirits that I channel
______|_____|_____| disavow all knowledge of my activities. ;-)
  uuu    U   uuu  | 
                  | In fact, all my personalities and channeled spirits
Saroff wuz here   | hate my guts. (Well, maybe with garlic & butter...)
For law enforcment officials monitoring the net: marijuana, cocaine, cia
plutonium, ammonium nitrate, militia, dea, nsa, pgp, hacker, assassinate.
Send suggestions for new and interesting words to: msaroff@pobox.com.
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Subject: Re: paradox
From: Dave Bergacker
Date: Wed, 08 Jan 1997 12:55:09 -0700
Joseph H Allen wrote:
> 
> Here are some paradoxes:
> 
> -- black ravens
> 
> Suppose you say that all ravens are black....
[snip]
Ok, ForAll x s.t. raven(x) -> black(x)
> 
> Now the negation of "all ravens are black" is "all non-black things aren't
> ravens".  The two statements are logically equivalent.  ...
[snip]
Hmm, the negation of a wff, hmm, lets go to prenex normal form first:
FarAll x s.t not(raven(x)) or black(x) (Since a -> b == not(a) or b)
And then to conjunctive normal form:
not(raven(x)) or black(x)
So if we "negate" this formula we get:
not[not(raven(x)) or black(x)] or, applying DeMorgans:
raven(x) and not(black(x))
So the "negation of 'all ravens are black'" is the above formula.  Hmm,
seems to say that all non-black things are ravens, NOT "all non-black
things
aren't ravens".
I'd say that your premise above is wrong, the two statements you quote
are NOT logically equivalent.
Assuming I did the conversion to clausal form correctly, it has been
four
years or so since I've done it.
[the rest of this and other so-called paradoxes cut]
Regards,
dave
-- 
Remove "__" in header to reply.
Dave Bergacker (daveb@minc.com)
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Subject: Re: 1 / 2^.5 or 2^.5 / 2?
From: "John D. Goulden"
Date: 8 Jan 1997 04:05:19 GMT
Of course pow(2,1/2) won't 'work' in C, nor will any expression in which
1/2 is intended to produce the value .5. On the other hand pow(2,1.0/2.0)
and pow(2.0,1.0/2.0) produce root 2 on all three of my C compilers.
-- 
John D. Goulden
jgoulden@snu.edu
> What you wrote is definitely not a floating point expression in
> Fortran, and probably not in BASIC.  The C equivalent, pow(num,1/2),
> does not use floating point division for the exponent, either. 
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Subject: Re: determinism vs non-determinism, was: Really random? (now back on original topic)
From: root@power7200.ping.be (Operator)
Date: 8 Jan 1997 20:01:03 GMT
In article <32d3593b.6335568@news.ping.be>,
	AIR1@ping.be (Stephan Verbeeck) writes:
[...]
>
>  ---------------
Ah... is there, by any coincidence, any relationship with the
scientific magazine AIR ?
That would explain a few things.
wondering,
Patrick.
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Subject: IRC Channel #physics
From: kinsler@dirac.shef.ac.uk (Paul Kinsler)
Date: 8 Jan 1997 16:16:03 GMT
There are IRC channels for the real-time discussion of
physics on EFnet, Euronet, and Undernet IRC networks.
For more information, read the URL:
http://www.shef.ac.uk/~phys/people/pkinsler/irc/phy/
#Paul.
-----------------------------+-----------------------------
Dr. Paul Kinsler                 
Department of Physics        (phone)+44-114-2224283
University of Sheffield      (fax ) +44-114-2728079
Sheffield S3 7RH             IRC:   haberman (on #physics)
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Subject: Re: Can light be accelerated or decelerated?
From: Bill Gill
Date: Wed, 08 Jan 1997 11:40:11 -0800
Hauke Reddmann wrote:
> 
> Absolute Zero (abz@gnn.com) wrote:
> :
> : Black holes are "black" because they can suck in light.
> : How can light be sucked in if it moves at a constant speed????  The black hole
> : must have "slowed it down".  On its way back down to the black hole, does light
> : or anything else travel faster than the speed of light?
> :
> : On more thing, if anyone knows anything about Einsteins' acceleration frame
> : stuff..please explain!!!!
> :
> Yes, your knowledge of SR/GR is absolute zero, indeed :-)
> 
> The light path DEFINES the metric! Remember the famous
> "light bend" solar eclipse experiment? The path ISN'T
> bend! It is straight BY DEFINITION. Your everyday
> experience of space and time is completely useless in
> the vicinity of a black hole.
> Read some GR texts. Come back in 10 years :-)
> --
> Hauke Reddmann <:-EX8
> fc3a501@math.uni-hamburg.de              PRIVATE EMAIL
> fc3a501@rzaixsrv1.rrz.uni-hamburg.de     BACKUP
> reddmann@chemie.uni-hamburg.de           SCIENCE ONLY
Not a very helpful explanation to somebody asking a reasonable question. 
Yes the light does "slow down" in reference to the frame of observation 
of observers outside the black hole.  However, in its own frame, it 
always travels at the same speed.  The observed "slow down" is due to the 
time dilation produced by the mass of the black hole.
Hope that helps a little for somebody who isn't steeped in general 
relativity.
Bill Gill
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Subject: Sonoluminescence
From: ramtang@hkstar.com (Hobbes)
Date: Wed, 08 Jan 1997 07:54:20 GMT
Would anyone tell me (qualitatively) how Casimir Effect is
used to explain sonoluminescence?
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Subject: Re: Can light be accelerated or decelerated?
From: Alan \"Uncle Al\" Schwartz
Date: 8 Jan 1997 16:30:26 GMT
abz@gnn.com (Absolute Zero) wrote:
>Please help!!!
>
>Black holes are "black" because they can suck in light.
>How can light be sucked in if it moves at a constant speed????  The black hole
>must have "slowed it down".  On its way back down to the black hole, does light
>or anything else travel faster than the speed of light?
>
>On more thing, if anyone knows anything about Einsteins' acceleration frame
>stuff..please explain!!!!
Light travels at constant velocity in a vacuum for all observers - 
lightspeed.  Light viewed by several observers at different relative 
velocities is blue- or red-shifted (Doppler shift). Light traveling in a 
medium moves at (lightspeed)/(refractive index).
If the escape velocity of a concentration of mass exceeds lightspeed, 
light doesn't make it out - it is forced to orbit or its path is a curve 
which returns to the "surface."  Another way of looking at it is that 
light making its way out of a gravitational field  is red-shifted for an 
external observer.  Make the gravitational field sufficiently strong and 
the red shift goes to infinity while the progression of time goes to zero 
- no light.
-- 
Alan "Uncle Al" Schwartz
UncleAl0@ix.netcom.com ("zero" before @)
http://www.ultra.net.au/~wisby/uncleal.htm
 (Toxic URL! Unsafe for children, Democrats, and most mammals)
"Quis custodiet ipsos custodes?"  The Net!
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Subject: Coherence Length and Table Vibration
From: Walter Polkosnik
Date: Wed, 8 Jan 1997 12:21:59 -0500
Is there a quick and simple technique for measuring the coherence length of
a laser? I know of the Michelson interferometer technique, I'd like
to get a detailed description of that technique or another. If anyone could
provide me with a reference to a text, paper or even web page, I'd
appreciate it.
I'm also interested in being able to quantify the vibration exhibited by
an optical table. 
--
Walter Polkosnik                             walt@panix.com  
Physics Department                           http://www.physics.qc.edu/~walt
Queens College, City University of New York  (718)-997-3364 voice
Credo quia absurdum est.                     (718)-997-3349 fax
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Subject: Re: FTL Comm
From: Peter Nelson
Date: Wed, 08 Jan 1997 12:09:23 -0500
Greg d. Moore wrote:
> > Now, here's the real question:  How would you use this mechanism to
> > transmit information?  (The answer is you can't.)
> >
> 
> I'd have to disagree.  Let's say you and I are about to start an
> interstellar war.  We want to rid the galaxy of the evil Grackons.
> 
> We set up our "binary decision device" using "separated electrons"
> 
> At the "correct" time, I check my device.  If it's flipped up,
> I attack first, otherwise if it's down, you attack first. 
> After I check mine, you check yours which tells you the
> state of mine and know what to do.
> 
>We've communicated.
The only "communication" that has occurred in this
example is whatever communication happened BEFORE
you sent out your "binary decision device" to agree
on how to interpret its state.     Using your definition
of "communication, you could be two light years apart,
watching a non-periodic variable star located halfway
between you.   If the star reaches some earlier-agreed-
upon magnitude by a certain date you attack first, 
otherwise your partner does.    Does this mean you've
communicated across two light years (your distance apart)
in just one year (the time it takes for the light from the
star to reach both of you)? 
To use something for communication you have to be able
to effect some change in it which can be detected at
a distance.    But in the "spooky action at a distance"
you are simply establishing its state (collapsing the wave
function) not setting its state.
---peter
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Subject: Re: 1 / 2^.5 or 2^.5 / 2?
From: Simon Read
Date: 8 Jan 97 21:12:30 GMT
ags@seaman.cc.purdue.edu (Dave Seaman) wrote:
>Although languages like Fortran and C do give 2^(1/2) = 1 (and so does
>BASIC, if I remember correctly),
I doubt it. Since you're not using exact FORTRAN, i.e. you're
using (^) instead of (**), I assume you're not mentioning other
details like (1./2.) is different from (1/2) because the former
is floating-point whereas the latter is integer. If you do not
mention this exact detail, you can't make blanket statements like
"2^(1/2)=1" .
Every BASIC I have ever used has given 2^(1/2) as the square root of
two to several decimal digits of accuracy. "Several" is a bit vague
because some BASICs let you put a "#" sign to signify extra precision
and not all BASICs store their default floating-point numbers to the
same precision.
I have never used a BASIC which even allows me to calculate 2^(1/2)
as an integer. I can calculate it as a floating-point number, and
explicitly truncate the result, but that's not the same as
calculating it as an integer to start with. One BASIC I know
allows integer division, but I don't know about explicitly
restraining powers to be integers.
C  I can't comment on.
"languages like" FORTRAN and C ...  that includes Pascal.
The original Pascal didn't even have a power statement/operator/function,
so you had to do 2^(1/2) by taking logarithms or writing your own
subroutine/function. This was clearly floating-point.
People soon got fed up with this and put a power facility in Pascal.
It sounds like languages like FORTRAN and C do indeed give floating-point
answers.
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Subject: Re: Time and its existance
From: 'uhane
Date: Wed, 08 Jan 1997 08:58:30 -1000
Dave Monroe wrote:
> Interesting how two people can perceive the same situation
> and draw two opposite conclusions.  I've always thought
> that since some force had to set the universe in motion
> in the first place, it would have to have been God.  The
> order to 'start' the universe would have to have come from
> outside - assuming there was ever a time it did not exist.
'Outside/inside' is one of those dualities which poses such a
quandry for us humans, like a zen koan -- difficult to penetrate.
But I don't see why your so-called order to start the universe
couldn't originate from inside as well as outside, both or neither.
Impossible to separate oneself from 'God' because all that exists
either is God or carries the divine spark.  But conscious awareness
of this is entirely another matter....
	"Ah, this case I've been working on
	 so long, so long..."  Tom Verlaine
'uhane
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Subject: Re: Infinitude of Primes in P-adics
From: Archimedes.Plutonium@dartmouth.edu (Archimedes Plutonium)
Date: 8 Jan 1997 17:46:44 GMT
From           dik@cwi.nl (Dik T. Winter)
Organization   CWI, Amsterdam
Date           Wed, 8 Jan 1997 02:23:21 GMT
Newsgroups     sci.math,sci.physics,sci.logic
Message-ID     
References     1 2 3
In article <5asb6a$ma6$1@dartvax.dartmouth.edu>
Archimedes.Plutonium@dartmouth.edu (Archimedes Plutonium) writes:
 > In article 
 > dik@cwi.nl (Dik T. Winter) writes:
 > 
 > >  > Let me recap here some facts :
 > >  >    p-adics form a field
 > > 
 > > No.  Obviously, if there *are* primes you do not have a field.
 > 
 > 3-adics form a field, 5-adics form a field
 > any p-adic where p is prime forms a field
Eh?  Did you read what I wrote after the sentence above?  If there *is*
a prime, there is no field.  In the 3-adics 3 is the only prime (%),
but
because there is a prime there is no field.  In a field every element
except 0 has a multiplicative inverse; there is no inverse of 3 in the
3-adics.  There is no inverse of p in the p-adics.  In the rationals
for
instance 3 is *not* prime.
--
% Prime in the sense of prime ideals.  Not in the sense of: there are
no a and b such that a.b = 3; because there are such a and b
(for instance: 2 * ...11111111120 = 10 = 3 in the 3-adics).  My
previous
proof was a bit wrong however.  If there is an element with a
multiplicative
inverse there is no prime in the traditional sense.  That was what the
original proved, but in that sense 3 is not even a prime in the
3-adics.
However, an element without multiplicative inverse can still generate a
prime ideal (as is the case with p in the p-adics), but in a field
there
are no such elements.
-- 
dik
This is a problem of *timing*. And a problem of timing is a big deal in
mathematics because mathematics is the science of precision.
 Yes I read your previous message.
  But you Dik assume that 3 is prime in the first place, do you not, in
order to construct the 3-adics. 
   Now, then, you construct the 3-adics and I say that the 3 is prime.
But you , Dik , accuse me of saying 3 is not a prime if 3-adics is a
field.
  I say to you Dik that we get the primeness of 3 from the special set
of Reals of this set { ....,  ..., ...002- , ....002+, ...003+,
....005+,....}
  I start with the Reals, and you Dik, I do not know where you started
from. Those special class of Reals, the Whole Reals are prime in Whole
Reals.
  So, if 2 or 3, 5, is not prime then Dik, how in the world can you
even start to construct the  2-adics or 3-adics or 5-adics.
  Personally I think this is a major problem of mathematics. Everyone
is saying these absolutist things that 3-adics is a field and yet they
do not want to recognize that 3 is prime in order to prove that it is a
field. And after they have proved that 3-adics is a field , they then
want to forget that 3 was prime in the first place in order to prove
that it is a field. All a bit hypocritical, I would say.
  So Dik, please tell when in the discussion you want to claim 3 is a
prime number in order to prove 3-adics is a field, and then, when do
you want to renounce that 3 was prime so that you can say that the
3-adics is not a field?
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Subject: Re: Mars Rock Crock!
From: Clark Dorman
Date: 08 Jan 1997 11:43:49 -0500
Wil Milan  writes:
> jenner wrote:
> > 
> > I'll let his TV series, his published works, and his
> > Pulitzer speak for him.
> 
> I don't doubt Sagan was a bright guy, but bear in mind that TV ratings
> and Pulitzer prizes are determined by people who are largely ignorant of
> science. Thus Sagan's Pulitzer for _Dragons of Eden_ may be considered
> praise of his writing style, but not the accuracy of the material, which
> was sometimes questionable and at times flat-out wrong.
Sagan was wrong on some things, but aren't we all.  I believe that the
catagory for which Sagan won his Pulitzer I believe was not in journalism or
music, but was in the non-fiction catagory.  I'd like to think that this
Pulitzer would not be delivered by a bunch of scientific illiterates.  The
jurors for last years prize were:
Susan Sheehan, author, journalist, Washington, D.C. (Chairman); Alan
Lightman, author, professor of Science and Writing, Massachusetts Institute
of Technology; Brigitte Weeks, editor-in-chief, Guideposts
Dr. Lightman, at least, teaches in the Physics department at MIT as well as
being in the Humanities department.  The other two don't seem to have a lot
in the way of science credentials though they do seem to be good writers.
Look at:
http://www.guideposts.org/authors/authors.weeks.shtml
and
http://www.jazzie.com/ebbco/schpsy.htm
http://www.achievement.org/autodoc/atv/atv11pgm-1
On the other hand, they really did deliver the prize to a wonderful work:
"The Beak of the Finch" by J. Weiner, published by Knopf.
-- 
Clark Dorman				"Evolution is cleverer than you are."
http://cns-web.bu.edu/pub/dorman/D.html                -Francis Crick
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