[meteorite-list] Fwd: LDG Sclieren spelling

From: Sterling K. Webb <sterling_k_webb_at_meteoritecentral.com>
Date: Wed, 10 Jun 2009 21:57:01 -0500
Message-ID: <359A146EA5FC4CA881B2823AE4248C5D_at_ATARIENGINE2>

The Schlieren effect is produced by variations
in the index of refraction in a material, often
associated with differences in density if the
material is homogeneous in composition but
can be produced by changes in composition
as well, or by temperature effects or pressure or...

Schlieren photography uses the Schlieren effect
to render the differences in refraction visible. Here's
some nice photography and movies of it:
http://sciencehack.com/videos/view/_gKNhGbsEf4


Sterling K. Webb
--------------------------------------------------------------------
----- Original Message -----
From: "Jason Utas" <meteoritekid at gmail.com>
To: "Impactika" <Impactika at aol.com>; "Meteorite-list"
<meteorite-list at meteoritecentral.com>
Sent: Wednesday, June 10, 2009 9:30 PM
Subject: [meteorite-list] Fwd: LDG Sclieren spelling


---------- Forwarded message ----------
From: Jason Utas <meteoritekid at gmail.com>
Date: Wed, Jun 10, 2009 at 7:00 PM
Subject: Re: [meteorite-list] LDG Sclieren spelling
To: Michael Blood <mlblood at cox.net>


Hello Michael,
That term applies to the "flow-lines" in all tektite material in
general:

http://www.sciencedirect.com/science?_ob=ArticleURL&_udi=B6V66-4HW80JN-P&_user=10&_rdoc=1&_fmt=&_orig=search&_sort=d&view=c&_acct=C000050221&_version=1&_urlVersion=0&_userid=10&md5=d0f28fcf67ca9b3fda0bae5bb69ec35f

http://www.sciencedirect.com/science?_ob=ArticleURL&_udi=B6VDB-3VW7S1X-5&_user=10&_rdoc=1&_fmt=&_orig=search&_sort=d&view=c&_acct=C000050221&_version=1&_urlVersion=0&_userid=10&md5=78afbbfe49682a49c9b8accc306504dc

And not necessarily to the meteoric material contained in LDG;
schlieren generally applies to the visible differences in density
apparent in layers and ripples in impact glasses, as well as other
substances. In fact, in tektites, this usually applies to areas
richer in SiO2 - not meteoric material.
Regards,
Jason

On Wed, Jun 10, 2009 at 6:44 PM, Michael Blood<mlblood at cox.net> wrote:
> Thanks to Bob & Jeff: "Schlieren" it is.
> Thanks, Michael
>
>
>> From: Michael Blood <mlblood at cox.net>
>> Date: Wed, 10 Jun 2009 17:14:49 -0700
>> To: Meteorite List <meteorite-list at meteoritecentral.com>
>> Subject: Re: [meteorite-list] LDG clarification
>>
>> Hi all,
>> A few years ago it came out they had discovered meteoritic
>> Material in some of the Libyan Desert Glass (the specimens with
>> Dark streaking). It am trying do discover the spelling of the name
>> By which it was called: SCHYRIN (Sp? ) Scherlyn (Sp?) what?
>> Anyone know the spelling? (I would think some of the others
>> On the list would also be interested).
>> Thanks, Michael
>>
>>
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>
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Received on Wed 10 Jun 2009 10:57:01 PM PDT