I retired from the semi-conductor industry and we dealt with very
small dimensions from time to time. I wasn't in a fab, but did probe
the internal 'wires' that were deposited - trying fixes in a lab.
Certified to class 1 by INTEL but only worked in class 10 while consulting.
[ one company I worked for drilled holes deep into IC's and repaired
internal
metal connections. Those machines - like electron microscopes - wish I
had one today!]
To hold tiny, tiny things is done in several ways.
1. atomically attraction of molecules
2. static forces - as in a bad hair day -
3. when all else fails, glue. I'll explain more...
Using a very fine wire - you want a wire in the range of the object -
just touch it to a surface of glue of your choice. Might be a 'rubber'
type as in 'post-it-notes' or like light binding.
Then - with another fine wire select a sub droplet of affixing glue
(supper....)
and apply the tiny amount. Follow up with the object while using a
microscope...
and guide it into place.
Sometimes when we were dealing in fine structure work - I used 3 axis
x-y-z stage -
mechanically adjusting in very fine increments - and the working port a wire
that can be soldered upon - holds the very fine wire headed for the
storage site.
I suspect in Andrews case, it might also be - rabbit - rabbit - where
did you jump...
Being small it might be in the weave of a shirt or crack of a tile on
the floor...
Martin
Andrew Grebneff wrote:
>> I put a locally-collected Williamia krebsii Mørch, 1877 under the scope
>> yesterday to confirm. The same topology is seen in the Melampidae (except
>> for Blauneria, which has the opposite orientation). Despite the similarity
>> in their embryonic chirality, I've always thought of Pyramidellidae
>> (Heterobranchia) and the Melampid-Siphonaria (Eupulmonata) lineages as very
>> distant phylogenetically.
>>
>
> My own thoughts are that the so-called Archaeopulmonata are not in any
> way related to the Pulmonata, but are derived from the basal
> Opisthobranchia. They all have the typical opisthobranch hyperstrophic
> dextral protoconch (sinistral in Blauneria, of course), including
> Amphibola.
>
> I was preparing a small fossil "limpet" (from a brand-new Oligocene
> locality with a totally unexpected and oh-so-rare intertidal fauna)
> under the binoc when I noticed that it had a hyperstrophic protoconch.
> But when I tried to clean it the protoconch fell off, and being a
> small fraction of a millimeter in size, there was no way I could
> reattach it. However I'd guess that this was a siphonariid with
> symmetrical teleoconch; Siphonaria is also present in this fauna. As
> an aside, this fauna (Nerita, Cellana, and various other
> patellomorphs, gigantic ?Terebralia, hipponicids, ellobiids) kills
> dead the hypothesis being spouted by some that NZ was completely
> inundated in the Oligocene.
>
> --
> Regards
> Andrew Grebneff
> Dunedin, New Zealand
> Fossil preparator
> Mollusc, Toyota & VW van fanatic
>
> ----------------------------------------------------------------------
> [log in to unmask] - a forum for informal discussions on molluscs
> To leave this list, click on the following web link:
> http://listserv.uga.edu/cgi-bin/wa?SUBED1=conch-l&A=1
> Type your email address and name in the appropriate box and
> click leave the list.
> ----------------------------------------------------------------------
>
>
>
--
Martin H. Eastburn
@ home at Lions' Lair with our computer lionslair at consolidated dot net
"Our Republic and the Press will Rise or Fall Together": Joseph Pulitzer
TSRA: Endowed; NRA LOH & Patron Member, Golden Eagle, Patriot's Medal.
NRA Second Amendment Task Force Charter Charter Founder
IHMSA and NRA Metallic Silhouette maker & member. http://lufkinced.com/
----------------------------------------------------------------------
[log in to unmask] - a forum for informal discussions on molluscs
To leave this list, click on the following web link:
http://listserv.uga.edu/cgi-bin/wa?SUBED1=conch-l&A=1
Type your email address and name in the appropriate box and
click leave the list.
----------------------------------------------------------------------
|
