HDTenEightyP/NetNews huggingface dataset:
From: cflatter@nrao.edu (Chris Flatters)
Subject: Re: Trivial questions about the Big Bang
Reply-To: cflatter@nrao.edu
Organization: NRAO
Date: Wed, 12 Aug 1992 19:36:58 GMT

In article 202351@uctvax.uct.ac.za, ashric01@uctvax.uct.ac.za () writes:
>The COBE data for the 3K radiation has to be corrected for the earth/sun/etc
>motion through space. (ie Doppler shift has to be 'removed')  This conflicts
>with may understanding of the special theory of relativity. (ie there is no
>absolute rest frame)  The 3K radiation seems to form an absolute rest frame 
>for the universe?  Is this a problem ?  If not, why not?

The special theory of relativity does not state that there is no
absolute reference frame; nor for that matter does it state that there
is.  The special theory of relativity states that the speed of light
appears the same to any observer in an unaccelerated reference frame.
This has the consequence that two observers in different unaccelerated
reference frames can not see any differences between them by carrying out
physical experiments in their own frames and comparing results.

The observers can, however, determine the relative velocities of their
reference frames by observing experiments.  In our case we can measure
the red shift of the 3K background over different parts of the sky and
determine out velocity with respect to the reference frame in which the
centre of mass of the universe is at rest.  This does not conflict with
special (or general) relativity.  There is nothing special about the
centre of mass of the universe with regards to relativity.

	Chris Flatters
	cflatter@nrao.edu


Newsgroups: sci.astro
From: roelle@uars_mag.jhuapl.edu (Curtis Roelle)
Subject: Naked Eye Sunspot 
Summary: A naked eye sunspot group is currently visible on the sun.
Keywords: "naked eye sunspot" sunspot sun
Organization: Johns Hopkins University
Date: 19 Aug 92 13:11:25 GMT

Last night (Tue 18 Aug) I was tooling around the yard on the lawn mower
and recalled reading a post about a naked eye sunspot group (although I
do not recall the author's name).  The sun was low in the West, visible
through an increasingly thickening haze.  The sunspot in question was
quite obvious on the right hand half (Northern hemisphere), about 1/2
way between the center and right limb.  

I took only a few short glimpses because #14 welder's glass is not
standard equipment on most mowers.  I am not advocating true bald eye
observing of the sun, but given its altitude and the magnitude of
obscuration from haze, the welder's glass would black out what little
visible light was getting through (although it is other forms of
radiation such as infrared that eyes require protection from).  Let
me just say that as a general rule, one should not operate machinery
while staring at the sun.
From: j.jahn@abbs.hanse.de (Jost Jahn)
Newsgroups: sci.astro
Subject: Sunspots at 12.08.1992.
Date: 13 Aug 92 19:30:46 GMT
Reply-To: j.jahn@abbs.hanse.de
Distribution: sci
Organization: ABBS AstroMail, D-W 2121 Dahlenburg / Germany
X-Version: ZerUU V6.45c

Sunspots at 12.08.1992., 0 h UT.

No.    Pos.  Cl.  Ar.  Mag. SF  F  M  X
---------------------------------------
7245 06S 87W Cso   60   b
7248 13S 50W Dko  400   b    7
7251 20S 49W Bxo   10   b    3
7255 10S 37W Bxo   10   b
7256 16S 26E Dso   90   b
7257 22S 86W Bxo   10   b
7259 11S 01E Bxo   10   b
7260 16N 75E Cko  500   b    5


Optical and x-ray flares in 11.08.92.

Date     Beg. Max. End   Posit. Xray Opt
----------------------------------------
11.08.92 2222 2228 2246  .   .  M1.4


 
--
------------------------------------------------------------------------------
ABBS AstroMail, the first and most popular German astronomical bulletin board
------------------------- for amateur astronomers ----------------------------
    + 49 5851 7896 / V.21, V.22, V.22bis, V.32, V.42, V.42bis and MNP5
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Newsgroups: sci.astro
From: tholen@galileo.ifa.hawaii.edu (Dave Tholen)
Subject: Re: Calculating Planetary Positions
Organization: Institute for Astronomy, Hawaii
Date: Sat, 22 Aug 1992 04:48:53 GMT

Travis R. Stone writes:

>  Meeus gives you rough formulae only for Pluto, since the
>  wobbly little bastard's orbit is so hard to pin down (i.e.,
>  there has been no good "theory" derived for Pluto's motion
>  yet).

Could you elaborate on what you mean by no good "theory"?  JPL has
integrated the orbits of all the planets (and five asteroids as well)
for their DE200/LE200, which serves as the basis for the Astronomical
Almanac.  The laws of gravitation can be applied to Pluto just as
easily as for the other planets.  The osculating elements given in the
Almanac allow my ephemeris program to consistently provide an ephemeris
of Pluto good to better than an arcsecond.  The orbit may slowly run
off in the future, because of the possible perturbing effects of the
hypothesized tenth planet (see Harrington's publications on the matter),
or because a full orbit hasn't been covered yet, so the accuracy of the
known orbit may not be as high as we'd like it.  But there's nothing
wrong with the theory.

Wobbly I can go along with, given the mass ratio between Pluto and
Charon, but little bastard is a bit too much for me, having poured my
heart and soul into the study of this planet for the last decade.
Newsgroups: sci.astro,sci.physics,sci.math,talk.religion.misc
From: njzy@vax5.cit.cornell.edu (T. Joseph Lazio, Cornell University)
Newsgroups: sci.astro
Subject: Re: Standard model of QSOsex
Date: 14 Aug 92 08:18:46 EDT
Distribution: sci
Organization: Cornell University

In article <1992Aug12.112247.29716@jarvis.csri.toronto.edu>,
wayne@csri.toronto.edu (Wayne Hayes) writes: 
> njzy@vax5.cit.cornell.edu (T. Joseph Lazio, Cornell University) writes:
> 
>> However, galactic rotation curves, derived from stellar velocity dispersion 
>> measurements, are estimates of the inertial mass.  These rotation curves 
>> measure the velocity of the stars as they respond to an external force, 
>> namely the gravitational potential produced by the other stars.
> 
>> Thus, is this the explanation of dark matter in the Meta model?  Dark 
>> matter is nothing more than the difference between the gravitational 
>> and inertial masses of stars?
> 
> No, you've got it backwards, Tom's gravitational force is LESS than what it
> would be using "normal" physics; besides he claims the distinction is only
> apparent in very dense objects, and most of the stars and gas clouds in
> galaxies are not, so for the most part Imass == Gmass.

 How?  A star responds to the gravitational potential of other stars.  
 Its response is a measure of its Imass.  Of course, the gravitational 
 potential, produced from other stars, as predicted by the Meta model will 
 be less than "normal physics" would predict.

 Of course, I had forgotten that it is only for dense objects the 
 difference becomes apparent, so you're right that this would not 
 explain gravitational rotation curves.

-- 
 T. Joseph Lazio                | Why relativity? and Why  
 514 Space Sciences             | turbulence?  I really believe   
 Ithaca, NY  14853              | [God] will have an answer for the
 (607) 255-6420                 | first [question].
 lazio@astrosun.tn.cornell.edu  |   -- W. Heisenberg, on his death bed
ICBM:                           |
 42 deg. 20' 08" N              |              STOP RAPE
 76 deg. 28' 48" W              |
Newsgroups: sci.astro
From: schumach@convex.com (Richard A. Schumacher)
Subject: Pirate Instruments 6" f8 Dobsonian experiences?
Organization: CONVEX Computer Corporation, Richardson, Tx., USA
Date: Thu, 13 Aug 1992 00:12:28 GMT
X-Disclaimer: This message was written by a user at CONVEX Computer
              Corp. The opinions expressed are those of the user and
              not necessarily those of CONVEX.

Has anyone owned or used one of these? $200 bucks for a kit
might be a great deal, or it might be throwing away money
better saved toward that 15" Juno :->.
What is the net.verdict?

More generally, can anyone compare the experiences of an RFT
versus a long-focus instrument? Rich fields sound like fun,
but on the other hand, living in Dallas means that getting 
to a dark sky will be an occasional thing, and I'll likely
spend the majority of my time looking at solar system objects
from my back yard. So, for example,
does a Coulter Odyssey work just fine for moon-and-planets when
an off-axis aperture stop is used, as their literature claims?

Newsgroups: sci.astro
From: andromed@cs.dal.ca (Mike Boschat)
Subject: Aurora Aug. 22/23 
Organization: Math, Stats & CS, Dalhousie University, Halifax, NS, Canada
Date: Sun, 23 Aug 1992 11:37:15 GMT

 Hello;

 Well our weather computers showed aurora sightings from 70 north latitude
to 43 North latitude..to South Dakota, from 00 UT to 1000 UT.
 I went 50 Km from the city and saw the following types of aurora;

 0200 UT : a glow in the north sky from about 350 to 20 azimuth.
 
 0230 to 0330 : the aurora picked up in intensity but the color was a bright
                grey and clouds were silouetted agianst it, there were rays
                extending to 60 degres altitude and the basic types seen 
                were rayed arc, flaming arcs..the rippling type, and
                the rays. This extented from 340 to 50 azimuth and one
                ray greatest height was 70 degrees, the rays lasted
                about 30 seconds brightened then faded a bit.

 0335-0400: By this time the north shy was aurora but nothing seen
            to the south and there was no coronal arc overhead, the 
            aurora became a band type from 340 to 37 degres azimuth
            and began to quiet down by 0400 UT.


   


                                                 Clear skies

                                                  Mike Boschat 
 ------------------------------------------------------------
| "Our problems are man-made,      |    JOHN F. KENNEDY      |
|   therefore they can be solved   |                         |
|    by man."                      |  ASTRONOMY OBSERVATORY  |
|                                  |                         |
|     JOHN F. KENNEDY              |                         |
 ------------------------------------------------------------
From: eskin@btree.uucp (Michael Eskin)
Newsgroups: sci.astro
Subject: More info on the DS10A for sale
Date: 13 Aug 92 08:17:46 GMT
Distribution: na
Organization: Brooktree Corporation

Here are the eyepieces that I am including with the scope:

Meade MA 25mm
Meade Ortho 16.8mm
Meade Ortho 12.5mm
Meade Ortho 7mm
Meade 2x-3x variable barlow 

Michael Eskin

-- 

Michael Eskin                                   Voice: (619) 535-3476
Brooktree Corporation                            UUCP: ...!ucsd!btree!eskin
9950 Barnes Canyon Rd                             CIS: 76376,541
Newsgroups: sci.astro
From: wayne@csri.toronto.edu (Wayne Hayes)
Subject: Re: Standard model of QSOsex
Distribution: sci
Date: 12 Aug 92 15:22:47 GMT

njzy@vax5.cit.cornell.edu (T. Joseph Lazio, Cornell University) writes:
> From this description [and from other hints Tom has dropped], I infer
> that he disagrees with the notion that gravitational and inertial masses 
> are equal.  I would also infer that the inertial mass is larger.  Hence, 
> in the Meta model, stellar masses which are derived from binary star orbits
> are underestimates of the inertial mass.  

Hmmm, it's not clear to me that two stars of different (but "high") masses
are going to even orbit elliptically.  I have no idea how
Tom claims the gravitational masses change with "amount of matter" (==
inertial mass, I hope!), but I just tried a simple formula: gravitational
mass = inertial mass ^ 0.9, and modified my old  NBody simulator, and
the orbits of two masses was NOT elliptical, not by a long shot.  It's
not even clear if the orbits would be closed.  (I didn't run it long enough,
but it was a weird enough orbit that I'm pretty sure they'd either spiral
in or get tossed away... unless of course there's an equilibrium reached
somewhere.)  Alot more detail formulae and analysis would be necessary.  So
I don't think ANYTHING can be said about binary star orbits and masses
until we know alot more about Tom's mass claims.

> However, galactic rotation curves, derived from stellar velocity dispersion 
> measurements, are estimates of the inertial mass.  These rotation curves 
> measure the velocity of the stars as they respond to an external force, 
> namely the gravitational potential produced by the other stars.

> Thus, is this the explanation of dark matter in the Meta model?  Dark 
> matter is nothing more than the difference between the gravitational 
> and inertial masses of stars?

No, you've got it backwards, Tom's gravitational force is LESS than what it
would be using "normal" physics; besides he claims the distinction is only
apparent in very dense objects, and most of the stars and gas clouds in
galaxies are not, so for the most part Imass == Gmass.

> It is still not clear how extra interior matter increases stability.  The 
> stability of a star depends upon its surface gravitational field.

Depends what you mean by stability: if you mean no mass loss, then you're
right.  If, by "greater stability", Tom means "longer lifetime", then
certainly he's right: if the gravitational mass of a star is far less
than the inertial mass in the dense inner core, then the pressure would
be less, hence the hydrogen would burn slower => longer lifetime.  But
then again, depending on how the Gmass changes with density, mass loss
might start occuring on the surface... who knows.  Again we need more
formulae on how Gmass changes with density.

-- 
The primary goal of science is to describe whatever scientists see as being
in need of description.

Wayne Hayes     INTERNET: wayne@csri.utoronto.ca        CompuServe: 72401,3525
From: jcj@tellabs.com (JCJ)
Newsgroups: sci.astro
Subject: A Meta question...
Date: 21 Aug 92 13:30:54 GMT
Distribution: na
Organization: Huh?
Originator: jcj@sunl18


Maybe I missed an earlier discussion of this, but I have a couple
basic questions on the MM:

1)  In the MM, what's the value of Omega?
2)  Given that MM doesn't accept/include a big bang (with or without 
    inflation), what sort of origin does this imply?  Does the MM
    rehash a steady-state model?

Thanks.  

(If the answers are obvious I apologize - it's Friday, it's payday, and 
I'm outta here at noon, so my thinking is less than critical.)
From: eskin@btree.uucp (Michael Eskin)
Newsgroups: sci.astro
Subject: Meade DS-10A + Accessories $600.00
Date: 12 Aug 92 20:04:01 GMT
Distribution: na
Organization: Brooktree Corporation

Meade DS-10A Deep Space 10" Newtonian Telescope

Includes clock drive, heavy duty equitorial tripod, right-angle finder
scope, three eyepieces, and 2x-3x barlow lens.  This scope is a f4.5
rich field scope.  The tube measures 45" x 12" (short for a 10 inch
newtonian) and can be easily transported in most cars.  Setup takes
about 5 minutes.  Focuser accepts 1.25 and 2 inch eyepieces.  In very
good condition.  Optically excellent.  Easy to setup and use.

With its 10" mirror, this scope offers bright, clear images of nebulae,
galaxies, and the planets.

$600.00 for everything

Please contact:
Michael Eskin
(619) 535-3476 work
(619) 469-7038 home
-- 

Michael Eskin                                   Voice: (619) 535-3476
Brooktree Corporation                            UUCP: ...!ucsd!btree!eskin
9950 Barnes Canyon Rd                             CIS: 76376,541
From: michi@ptcburp.ptcbu.oz.au (Michael Henning)
Newsgroups: sci.misc
Subject: Re: ******** MICROWAVE HAZARDS *******
Date: 19 Aug 92 23:34:15 GMT
Organization: Pyramid Technology Corporation

bng@tropix.uucp (Baldwin Ng) writes:

>In article <1992Aug19.045237.15128@ptcburp.ptcbu.oz.au> michi@ptcburp.ptcbu.oz.au (Michael Henning) writes:
>>bng@tropel.gca.com (Baldwin Ng) writes:
>>
>>>Hello Everyone,
>>
>>>I am sure that many of you have heard the fact that radar guns
>>>used by highway police are now suspected to cause cancer to
>>>police who are frequently exposed to MICROWAVES.
>>
>>Good to hear that :-)
>>

>WELL, I believe that a lot of these police aren't really AXX-HOLES.  They
>were just forced by their police dept heads to turn in certain no. of tickets
>eveyday!  I don't think they deserve CANCER.

I don't think they deserve cancer either. Note the smiley after my remark,
it wasn't really serious.

								Michi.
-- 
      -m------- Michael Henning                 +61 75 950255
    ---mmm----- Pyramid Technology              +61 75 722475 FAX
  -----mmmmm--- Research Park, Bond University  michi@ptcburp.ptcbu.oz.au
-------mmmmmmm- Gold Coast, Q 4229, AUSTRALIA   uunet!munnari!ptcburp.oz!michi
From: bng@tropix.uucp (Baldwin Ng)
Newsgroups: sci.misc
Subject: Re: ******** MICROWAVE HAZARDS *******
Date: 19 Aug 92 18:51:03 GMT
Reply-To: bng@sunrise.UUCP (Baldwin Ng)
Organization: GCA/Tropel Division, Fairport, NY

In article <1992Aug19.045237.15128@ptcburp.ptcbu.oz.au> michi@ptcburp.ptcbu.oz.au (Michael Henning) writes:
>bng@tropel.gca.com (Baldwin Ng) writes:
>
>>Hello Everyone,
>
>>I am sure that many of you have heard the fact that radar guns
>>used by highway police are now suspected to cause cancer to
>>police who are frequently exposed to MICROWAVES.
>
>Good to hear that :-)
>
>							Michi.
>-- 
>      -m------- Michael Henning                 +61 75 950255
>    ---mmm----- Pyramid Technology              +61 75 722475 FAX
>  -----mmmmm--- Research Park, Bond University  michi@ptcburp.ptcbu.oz.au
>-------mmmmmmm- Gold Coast, Q 4229, AUSTRALIA   uunet!munnari!ptcburp.oz!michi

WELL, I believe that a lot of these police aren't really AXX-HOLES.  They
were just forced by their police dept heads to turn in certain no. of tickets
eveyday!  I don't think they deserve CANCER.

Baldwin Ng
From: osycs@giac1.oscs.montana.edu (Craig Spannring)
Newsgroups: ed.general,sci.misc
Subject: Re: "Magnetizer Fuel Energizer"
Keywords: n
Date: 12 Aug 92 20:59:00 GMT
Organization: Geographic Information & Analysis Center Montana State University

In article <RJC.92Aug8132122@daiches.cogsci.ed.ac.uk> rjc@cogsci.ed.ac.uk (Richard Caley) writes:
>In article <24646@castle.ed.ac.uk>, L Bootland (lb) writes:
>
>lb> It claims to be "..a highly effective , easy to install fuel saving
>lb> device, created through the technology of Magneto Hydro Dynamics (MHD).

I'd like to announce to the net my new invention of a highly ineffective, 
bitch to install fuel saving device.  How much would you pay?  But wait, 
I'll even throw in the free cow magnet...

>
>Well, unless my memory of physics lo these many years past fails me,
>MHD is the theory behind magnetic bottles used in attempts at fusion

Magneto Hydro Dynamics (MHD) deals with producing electricity directly from
a fast moving stream of plasma.  Most cars I've used get more than enough
electricity just from their alternators.  (I wish those type of frauds
would stop stealing valid terminology to try to sell the (non)product.)
of plasma near some 
-- 
====================================================================
 Six of one, 110 (base 2) of       | Craig Spannring
 another.                          | osycs@giac1.oscs.montana.edu
 ----------------------------------+--------------------------------
From: michi@ptcburp.ptcbu.oz.au (Michael Henning)
Newsgroups: sci.misc
Subject: Re: ******** MICROWAVE HAZARDS *******
Date: 19 Aug 92 04:52:37 GMT
Organization: Pyramid Technology Corporation

bng@tropel.gca.com (Baldwin Ng) writes:

>Hello Everyone,

>I am sure that many of you have heard the fact that radar guns
>used by highway police are now suspected to cause cancer to
>police who are frequently exposed to MICROWAVES.

Good to hear that :-)

							Michi.
-- 
      -m------- Michael Henning                 +61 75 950255
    ---mmm----- Pyramid Technology              +61 75 722475 FAX
  -----mmmmm--- Research Park, Bond University  michi@ptcburp.ptcbu.oz.au
-------mmmmmmm- Gold Coast, Q 4229, AUSTRALIA   uunet!munnari!ptcburp.oz!michi
From: dubuf@sicsun.epfl.ch (Hans DU BUF)
Newsgroups: sci.misc
Subject: PhD student in image processing
Keywords: see above
Date: 18 Aug 92 13:54:33 GMT
Organization: Ecole Polytechnique Federale de Lausanne


Maybe you could forward this to interested students:


OPENING FOR A PhD STUDENT IN IMAGE PROCESSING
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
I have an opening for a PhD student, starting 1st of October, for 2
years now but with the possibility of a prolongation, probably to 4
years in total. The project is funded by the Swiss National Science 
Foundation. The subject concerns the development of a multiscale image
analysis system which produces a syntactical/geometrical representation
allowing for a very precise image resynthesis. Keywords are: scale space,
2D quadrature filtering, phase responses, line/edge/vertex detection,
response interferences, ambiguities, and context processing.

The candidate *must* have followed courses in signal and image processing,
and preferably done his master's project in this domain. Some insight into
visual psychophysics and/or visual neurophysiology wouldn't be bad.
Programming: FORTRAN is a pro, C not per se, maybe some experience with
LATEX, MATHEMATICA, or MATLAB. UNIX of course.

The starting salary is about 60K SwissFR per annum, which makes somewhat
less than 4K (3750, say) net per month, depending on age.

The Signal Processing Laboratory of the Swiss Federal Institute of Tech-
nology is well equipped with powerful workstations, quite some software
packages, and for the heavy jobs we have our CRAY-2 and Y-MP on campus.
There is not a real campus because we lack student lodging (all students
and up live in Lausanne and nearby villages). Lausanne is situated at what
is called the Swiss Riviera, with a view on the Geneva lake and the French
alps. See your nearby tourist office for more details. One important
detail: Lausanne is located in the French-speaking part of Switzerland.
The language in the lab is English because of the many nationalities, but
we advise taking French courses which are provided by the Institute.

Send your resume and possible questions as soon as possible by snail mail,
please NOT by email because I will be off to two conferences, to:

Dr. J. du Buf
Signal Processing Laboratory
Swiss federal Institute of Technology
EPFL-Ecublens
CH-1015 Lausanne
Switzerland

If possible, provide an email address and/or fax number!
From: bng@tropel.gca.com (Baldwin Ng)
Newsgroups: sci.misc
Subject: ********  MICROWAVE HAZARDS *******
Date: 18 Aug 92 19:54:13 GMT

Hello Everyone,

I am sure that many of you have heard the fact that radar guns
used by highway police are now suspected to cause cancer to
police who are frequently exposed to MICROWAVES.

My question is: ARE MICROWAVE OVENS (when used very frequently)
                ALSO CAPABLE OF CAUSING CANCER??

I suspect that microwave ovens have some kind of a shield to
cutoff most of the radiation, but a small portion is still
leaked through and radiates to the user, right??

Thanks,
Baldwin

PS: Please reply to ng@moe.optics.rochester.edu
From: Roger.Firestone@f10.n109.z1.fidonet.org (Roger Firestone)
Sender: Uucp@blkcat.UUCP
Newsgroups: sci.misc
Subject: Request for Limericks
Date: Mon, 17 Aug 1992 18:46:00 -0500

A mathematician named Klein
Thought the Moebius strip was divine.
  He said, "If you glue
  The edges of two,
You get a weird bottle like mine."
 
A burlecue dancer, a pip,
Named Virginia, could peel in a zip.
  But she read science fiction
  And died of constriction
Attempting a Moebius strip.
 
(The second may be credited to Clifton Fadiman's _Fantasia Mathematica_, which
is where I first saw it.  I have no idea of attribution for the first.)
 
Roger M. Firestone ("I'm not a mathematician/computer scientist, I'm an
unemployed actor.")

Newsgroups: sci.chem