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
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----- Original Message -----
From: "Jason Utas" <[email protected]>
To: "Impactika" <[email protected]>; "Meteorite-list"
<[email protected]>
Sent: Wednesday, June 10, 2009 9:30 PM
Subject: [meteorite-list] Fwd: LDG Sclieren spelling
---------- Forwarded message ----------
From: Jason Utas <[email protected]>
Date: Wed, Jun 10, 2009 at 7:00 PM
Subject: Re: [meteorite-list] LDG Sclieren spelling
To: Michael Blood <[email protected]>
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<[email protected]> wrote:
Thanks to Bob & Jeff: "Schlieren" it is.
Thanks, Michael
From: Michael Blood <[email protected]>
Date: Wed, 10 Jun 2009 17:14:49 -0700
To: Meteorite List <[email protected]>
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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