[meteorite-list] 1848: light produced when "meteorite" sawn -possible or...

[Martin Altmann]

Hiho,

I have problems in understanding:

"In sawing the mass,
globules were inflamed by the friction of the
teeth of the saw, and a bright light produced."

What for globules? Globules inside Braunau?

In ignoring "globules" I'd say, that one never sees, while cutting, what is
going on inside the piece, until the pieces finally are separated.
Perhaps they meant only the sparks, which are caused by cutting iron.

Thanks,
Martin


----- Original Message ----- 
From: "Norm Lehrman" <nlehrman at nvbell.net>
To: <Impactika at aol.com>; <caubeck at gmail.com>;
<magonia_exchange at yahoogroups.com>; <Meteorite-list at meteoritecentral.com>
Sent: Tuesday, September 13, 2005 4:51 PM
Subject: Re: [meteorite-list] 1848: light produced when "meteorite"
sawn -possible or...


> Anne & all,
>
> The types of luminescence that I described are
> restricted to non-metallics.  One thing I've wondered:
> what sort of saws would they have used in the olden
> days?  Probably soft iron plus a particulate abrasive.
>  It wouldn't be too hard to frictionally heat a cut to
> red heat if inadequate lubrication was employed.  They
> probably also used an abrasive inferior to diamond,
> which would've contributed to heat accumulation.
>
> Cheers,
> Norm
> (http://tektitesource.com)
>
> --- Impactika at aol.com wrote:
>
> > Norm, Chris and List,
> >
> > Looking on the Calendar of Falls, I found this one:
> > Braunau: Fell July 14, 1847 at 3:45am, near Trutnov,
> > Bohemia, Czech
> > Republic. 2 masses, 22kg and 17kg, and it is an
> > hexahedrite.
> > Could cutting an iron create light?
> >
> > Anne M. Black
> > _www.IMPACTIKA.com_ (http://www.IMPACTIKA.com)
> > _IMPACTIKA at aol.com_ (mailto:IMPACTIKA at aol.com)
> > President, I.M.C.A.  Inc.
> > _www.IMCA.cc_ (http://www.IMCA.cc)
> >
> >
> >
> > In a message dated 9/12/2005 6:41:14 P.M. Mountain
> > Standard Time,
> > nlehrman at nvbell.net writes:
> > Chris & list,
> >
> > "Possible or  impossible?"
> >
> > Possible.  Quite a few minerals can emit light  on
> > being crushed or scratched.  This is  termed
> > "triboluminescence".  Additionally, some minerals
> > can
> > emit  light when heated to temperatures still well
> > below red heat.  This is  "thermoluminescence".  I
> > don't know the composition of this particular
> > stone,
> > but if it has some non-metallic minerals, the action
> > of the saw  might cause light emission.
> >
> >
> >
> > --- chris aubeck  <caubeck at gmail.com> wrote:
> >
> > > Ohio | Sandusky | The Sandusky  Clarion |
> > 1848-01-25
> > >
> > >
> > > A REMARKABLE AEROLITE.
> > >
> > > On the 14th July last, a remarkable aerolite
> > > fell at Brannan,  at Bohemia. Two fragments were
> > > found,
> > > one weighing fifteen, the  other twenty-one
> > > kilogrammes.
> > > The aeorilite [sic] appeared to  proceed, as is
> > very
> > > often the case,
> > > from a small black cloud.  The smaller fragment
> > > fell upon a house, pierced the roof, struck
> > >  a beam which caused it lo deviate slightly
> > > from its course, passed  through a ceiling
> > composed
> > > of white clay and straw, and entered a  room
> > > where several persons were assembled, but
> > > fortunately,  noone was hurt. A circumstance
> > > worthy of remark was, that the straw  of
> > > the ceiling traversed by the meteor was not in
> > > the least  carbonized: it only appeared of a
> > > brighter yellow, with semi-metalic  lustre; pieces
> > > of straw even adhering to the stone, presented
> > > no  trace of carbonization. A fragment has
> > > been analysed by M. Fischer, of  Breslau, who
> > > found in it, besides sulphuretted iron, carbon,
> > >  phosphorus and bromine. In sawing the mass,
> > > globules were inflamed by  the friction of the
> > > teeth of the saw, and a bright light  produced.
> > >
> > > Literary Gazette.
> > >  ______________________________________________
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