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

From: Norm Lehrman <nlehrman_at_meteoritecentral.com>
Date: Tue Sep 13 11:11:20 2005
Message-ID: <20050913145152.57859.qmail_at_web81005.mail.yahoo.com>

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@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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Received on Tue 13 Sep 2005 10:51:52 AM PDT