McAnally's (The Community Pub) > Author Craft

an engineering problem which I need to solve for a story

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the neurovore of Zur-En-Aargh:

--- Quote from: Snowleopard on July 03, 2012, 07:53:19 AM ---You want your ginormous payload to hit the moon in more or less a certain position, yes?

--- End quote ---

Not with any huge degree of accuracy.


--- Quote ---What if there were tunnels inside the payload filled with fluid and a giant rough kind
of gyroscope to keep it 'level and/or upright'.  Venting or shifting fluid into different
tunnels to adjust trajectory.
Perhaps your 'special package' could be disguised as flotsam floating in this fluid.
Along with other junk.

--- End quote ---

That, however, is a very nice thought.  Thank you. It would fit well with being something that would not be obvious to anyone looking over the crash site afterwards, either.

Snowleopard:
Er, good jade doesn't require resin to stabilize it.
I worked at a jade importing firm.
Maybe resin is used to color some jade but not stabilize it.
Now Turquoise is often stabilized but jade????

Quantus:

--- Quote from: Snowleopard on July 03, 2012, 05:45:40 PM ---Er, good jade doesn't require resin to stabilize it.
I worked at a jade importing firm.
Maybe resin is used to color some jade but not stabilize it.
Now Turquoise is often stabilized but jade????

--- End quote ---
Then Ill bow to your expertise, i was workign off this fromt eh wikipedai article:


--- Quote ---Enhancement

Jade may be enhanced (sometimes called "stabilized"). Note that some merchants will refer to these as Grades, but it is important to bear in mind that degree of enhancement is different from colour and texture quality. In other words, Type A jadeite is not enhanced but can have poor colour and texture. There are three main methods of enhancement, sometimes referred to as the ABC Treatment System:[11]

    Type A jadeite has not been treated in any way except surface waxing.
    Type B treatment involves exposing a promising but stained piece of jadeite to chemical bleaches and/or acids and impregnating it with a clear polymer resin. This results in a significant improvement of transparency and colour of the material. Currently, infrared spectroscopy is the most accurate test for the detection of polymer in jadeite.
    Type C jade has been artificially stained or dyed. The effects are somewhat uncontrollable and may result in a dull brown. In any case, translucency is usually lost.
    B+C jade is a combination of B and C: it has been both artificially dyed AND impregnated.
    Type D jade refers to a composite stone such as a doublet comprising a jade top with a plastic backing.
--- End quote ---
[/tt]

Snowleopard:
That's something new to me, Quantus.
The jade carried by the firm I worked for wasn't treated in anyway that I know of.
I do understand why they would enhance it however.
Jade is sold in boulders - they cut a couple of small windows in different places to show you
the quality of the jade.  Problem is - you can't see what's inside the rest of the boulder - so
the really high quality stuff you see may only comprise one percent of the entire boulder - so
the cost of the boulder has to be spread over all the stones you get out of it.  So if you could
get more stones of a better color out of it - then yes I can understand the resin and coloring stuff.

By the by - jade is actually two minerals with the same chemical composition but a different
molecular structure.  Nephrite which has duller colors and a kind of waxy or soapy look to it
when polished.  (most antique Chinese jade is Nephrite)  And Jadeite which can be polished to
a hard shine and has brigher colors - apple green, black (really a dark green) red, yellow,
and lavender.  Pure jade is actually white.

Quantus:
I would imagine its a practice used on the cheap tourist stuff ive seen on ebay and such.  It sounds like you worked in a higher quality area of the industry, or at least well upstream from those kind of shenanigans. 

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