water spectral absorption

 High concentrations of dissolved lime make the water of Havasu Falls appear
turquoise.

link:
http://www.nationmaster.com/encyclopedia/Color-of-water

Post a reply to this message

Attachments:
Download '400px-havasu_falls_2_md.jpg' (64 KB)

Preview of image '400px-havasu_falls_2_md.jpg'

"alphaQuad" <alp### [at] earthlinknet> wrote:
> water spectral absorption
>
>  High concentrations of dissolved lime make the water of Havasu Falls appear
> turquoise.
>
> link:
> http://www.nationmaster.com/encyclopedia/Color-of-water

And http://www.photoseek.com/99SW-07-33-Havasu-Falls.jpg

Interestingly, your image looked like rendered to me, and still does.
Supremely well rendered, mind you, but it's not a photograph if you ask me.


--
jussi

Post a reply to this message

"alphaQuad" <alp### [at] earthlinknet> wrote:
>  High concentrations of dissolved lime make the water of Havasu Falls appear
> turquoise.

Low concentrations of almost every known substance make the water around my home
appear turquoise.

link:
http://images.google.co.vi/images?hl=en&q=%22st+thomas%22+beach&btnG=Search+Images&gbv=2

(Note, if you're thinking that the water at Lindqvist Beach can't possibly be
that color, you're right.  That color balance is just *wrong*.

Satellite photo of Lindqvist Beach:
http://maps.google.com/?ie=UTF8&ll=18.341532,-64.858303&spn=0.011141,0.015063&t=h&z=16

Unfortunately, it was a cloudy day.)

The turquoise does not come from the dissolved lime; it comes from the water
itself.  Shallow waters usually don't appear turquoise because of impurities
such as tannins, algae, other organic matter, and sand.  But clear water as
shallow as 2 feet takes on a noticeable turquoise cast.  I can't find the
Havasu Falls illustration, but my guess is that the lime enhances the existing
turquoise color by scattering the light.

The waters around my home are clear because they are scrubbed clean of ocean
nutrients by the coral.  There is no organic matter to interfere with the true
color of the water.  There is significant contamination by dissolved halite
(sodium chloride) at 35 grams per liter, but so far, I've seen nothing about
what effect this has on water's optical properties.

Deep water is indigo colored because more of the green light is absorbed,
leaving just the blue and violet wavelengths.

Post a reply to this message

"alphaQuad" <alp### [at] earthlinknet> wrote:
> water spectral absorption
>
>  High concentrations of dissolved lime make the water of Havasu Falls appear
> turquoise.
>

Beautiful image, with great colors and composition.  I like yours better than
the real photo!

Ken W.

Post a reply to this message

Kenneth wrote:
> "alphaQuad" <alp### [at] earthlinknet> wrote:
>> water spectral absorption
>>
>>  High concentrations of dissolved lime make the water of Havasu Falls appear
>> turquoise.
>>
> 
> Beautiful image, with great colors and composition.  I like yours better than
> the real photo!

It's not a render.

Post a reply to this message

nemesis <nam### [at] nospamgmailcom> wrote:
> Kenneth wrote:

> > Beautiful image, with great colors and composition.  I like yours better than
> > the real photo!
>
> It's not a render.

That's interesting.

Images that are posted here are *usually* renders. It would be nice if people
who uploaded PHOTOS (someone else's copyrighted photo at that) would make that
clear--which alphaQuad didn't bother to do, other than giving links to other
sites--which I may or may not take the time to visit. (I'm not knocking you,
you're message is appreciated.) I suppose from now on, my first question when
posting a comment will be, "So, is that a render?" A question I shouldn't have
to ask here.

Ken W.

Post a reply to this message

nemesis <nam### [at] nospamgmailcom> wrote:
> It's not a render.

Really?





Darn.

Post a reply to this message

"Cousin Ricky" <ric### [at] yahoocom> wrote:
> nemesis <nam### [at] nospamgmailcom> wrote:
> > It's not a render.
>
> Really?
>
>
>
>
>
> Darn.

You can please half the people some of the time and some of the people half the
time ... how does that go? OMG. Whatever Bush has, its contagious. Help me I'm
melting, oh, what a world, what a world.

Post a reply to this message

Kenneth escreveu:
> nemesis <nam### [at] nospamgmailcom> wrote:
>> Kenneth wrote:
> 
>>> Beautiful image, with great colors and composition.  I like yours better than
>>> the real photo!
>> It's not a render.
> 
> That's interesting.
> 
> Images that are posted here are *usually* renders. It would be nice if people
> who uploaded PHOTOS (someone else's copyrighted photo at that) would make that
> clear--which alphaQuad didn't bother to do, other than giving links to other
> sites--which I may or may not take the time to visit. (I'm not knocking you,
> you're message is appreciated.) I suppose from now on, my first question when
> posting a comment will be, "So, is that a render?" A question I shouldn't have
> to ask here.

In the case of alphaQuad posts, it's just a matter at actually looking a 
few of his actual renders.  Lately, he's been posting flowers and nature 
photos, which at least are beautiful.  Better than some of his stream of 
counciousness trips...

Post a reply to this message

Beautiful work moondigger.
http://en.wikipedia.org/wiki/Image:Havasu_Falls_2_md.jpg

This file is licensed under the Creative Commons Attribution ShareAlike 2.5 
License. In short: you are free to share and make derivative works of the 
file under the conditions that you appropriately attribute it, and that you 
distribute it only under a license identical to this one.

See:
http://en.wikipedia.org/wiki/User:Moondigger
http://en.wikipedia.org/wiki/Turquoise_(color)
http://en.wikipedia.org/wiki/Color_of_water
etc


"alphaQuad" <alp### [at] earthlinknet> wrote in message 
news:web.48dc4a4ee22c498e7d1d789a0@news.povray.org...
> water spectral absorption
>
> High concentrations of dissolved lime make the water of Havasu Falls 
> appear
> turquoise.
>
> link:
> http://www.nationmaster.com/encyclopedia/Color-of-water
>
>
>

Post a reply to this message