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

[Norm Lehrman]

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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> >
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