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On Mon, 17 Jul 2000 15:52:27 +0200, "Gail Shaw" <gsh### [at] monotix coza>
wrote:
>Does anyone know, or know where I can find info
>on the physical and optical properties of ethane
>(C2H6) at -178 degrees C and 1.6 atm? It's a liquid
>at that temp and pressure.
>I need the colour, transparency, reflectivity and ior.
>I looked in the newior.inc file, but couldn't find anything.
Can't help you there, Gail. If it were ethanol you needed...
especially solved 2:3 in water with some floral extracts, mmm...
Peter Popov ICQ : 15002700
Personal e-mail : pet### [at] usanet
TAG e-mail : pet### [at] tagpovrayorg
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Gail Shaw wrote:
>
> Does anyone know, or know where I can find info
> on the physical and optical properties of ethane
> (C2H6) at -178 degrees C and 1.6 atm? It's a liquid
> at that temp and pressure.
>
> I need the colour, transparency, reflectivity and ior.
> I looked in the newior.inc file, but couldn't find anything.
>
> Thanks
>
> Gail
Hi Gail.
AFAIK the index of refraction is linked to the density of the
matter. You have to find the density of ethane at the point you
specified and then compared it to the densities and iors you know.
It's an approximation but better then nothing.
Check this:
http://webbook.nist.gov/chemistry/fluid/
Marc
--
Marc Schimmler
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>
>Hi Gail.
>
>AFAIK the index of refraction is linked to the density of the
>matter. You have to find the density of ethane at the point you
>specified and then compared it to the densities and iors you know.
>It's an approximation but better then nothing.
>
>Check this:
>
>http://webbook.nist.gov/chemistry/fluid/
>
Nice. Is there a formula relating ior and density of liquid or should
I just guess?
Thanks
Gail
********************************************************************
* gsh### [at] monotixcoza * Reality.dat not found *
* http://www.rucus.ru.ac.za/~gail/ * Attempting to reboot universe *
********************************************************************
* The best way to accelerate Windows NT is at 9.8 m/s^2 *
********************************************************************
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Gail Shaw wrote:
> Nice. Is there a formula relating ior and density of liquid or should
> I just guess?
Comparative analysis in your basement laboratory should suffice :)
--
Ken Tyler - 1400+ POV-Ray, Graphics, 3D Rendering, and Raytracing Links:
http://home.pacbell.net/tylereng/index.html http://www.povray.org/links/
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Gail Shaw wrote:
>
> >
> >Hi Gail.
> >
> >AFAIK the index of refraction is linked to the density of the
> >matter. You have to find the density of ethane at the point you
> >specified and then compared it to the densities and iors you know.
> >It's an approximation but better then nothing.
> >
> >Check this:
> >
> >http://webbook.nist.gov/chemistry/fluid/
> >
>
> Nice. Is there a formula relating ior and density of liquid or should
> I just guess?
>
> Thanks
> Gail
Try to find two fluids with similiar densities, then try to inter- or
extrapolate the values. It will be hard for somebody to prove that
you are wrong :)
Marc
--
Marc Schimmler
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>Try to find two fluids with similiar densities, then try to inter- or
>extrapolate the values. It will be hard for somebody to prove that
>you are wrong :)
>
Will give that a go. Thanks to all who replied.
Gail
********************************************************************
* gsh### [at] monotixcoza * Reality.dat not found *
* http://www.rucus.ru.ac.za/~gail/ * Attempting to reboot universe *
********************************************************************
* The best way to accelerate Windows NT is at 9.8 m/s^2 *
********************************************************************
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In article <3973f2c3@news.povray.org>, "Gail Shaw"
<gsh### [at] monotixcoza> wrote:
> >Maybe if it is newer than the 46th edition...my CRC Handbook of
> >Chemistry and Physics had a lot of information on ethane and similar
> >compounds, but not the ior.
> Thanks. I'll look out for it. When was the 46th edition published?
1965-1966. My copy is starting to look a bit worn...especially since one
of the dogs got it.
The newer versions might have the ior...it is apparently available on
the web, I think there is a free 7 day trial. It might be worth looking
at. URL: http://www.crcpress.com/
Look under "Web Products" for the Handbook of Chemistry and Physics.
--
Christopher James Huff - Personal e-mail: chr### [at] maccom
TAG(Technical Assistance Group) e-mail: chr### [at] tagpovrayorg
Personal Web page: http://homepage.mac.com/chrishuff/
TAG Web page: http://tag.povray.org/
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In article <39741AC8.12BC6979@yahoo.com>, ryan constantine
<rco### [at] yahoocom> wrote:
> 46th? funny, i thought it was already past 70th.
It is. My copy is over 30 years old. :-)
Still, it is newer than my (incomplete) set of Encyclopedia Britannica,
which is from 1959.
--
Christopher James Huff - Personal e-mail: chr### [at] maccom
TAG(Technical Assistance Group) e-mail: chr### [at] tagpovrayorg
Personal Web page: http://homepage.mac.com/chrishuff/
TAG Web page: http://tag.povray.org/
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"Chris Huff" <chr### [at] maccom> wrote in message
news:chrishuff-730728.11053818072000@news.povray.org...
> In article <39741AC8.12BC6979@yahoo.com>, ryan constantine
> <rco### [at] yahoocom> wrote:
>
> > 46th? funny, i thought it was already past 70th.
>
> It is. My copy is over 30 years old. :-)
> Still, it is newer than my (incomplete) set of Encyclopedia Britannica,
> which is from 1959.
Same date as our dictionary at home - mostly alright, but oddities abound.
Masturbation, for example, is classified as "bodily self-abuse".
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"Gail Shaw" <gsh### [at] monotixcoza> wrote in message
news:39747932@news.povray.org...
>
> Will give that a go. Thanks to all who replied.
>
... of course it would have been nice if someone had actually known the
bleedin' answer... ;)
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