The Color of Water

[alohacyberian]

What color is pure water?

You might think that absolutely pure water would be perfectly
clear and utterly transparent, but it's actually blue. The blue
color of the water in the oceans (and not the blue of the sky) is
the reason why Earth is mostly blue as seen from space.

Pure water absorbs some of the light that passes through it. It
absorbs red light more than yellow, yellow more than green, and
green more than blue. Only the deepest blue light can travel
very far through water, so a large mass of water takes on a deep
blue color.

The blueness of water is easily visible in a swimming pool lined
with white concrete. It's even visible in a white porcelain
bathtub. But the bluest water of all is the clear tropical ocean
far from land, where the sea is much bluer than the sky.

The color of the ocean is strongly affected by plankton and
impurities:
http://daac.gsfc.nasa.gov/CAMPAIGN_DOCS/OCDST/what_is_ocean_color.
html
http://www.oceansonline.com/rainbows.htm

-- The Learning Kingdom

For more links to NASA - you are invited to visit the Science
Page at my website: http://keith.martin.home.att.net/space.html
- KM
--
(-:alohacyberian:-) At my website there are 3000 live cameras or
visit NASA, play games, read jokes, send greeting cards & connect
to CNN news, NBA, the White House, Academy Awards or learn all
about Hawaii, Israel and more: http://keith.martin.home.att.net/

[Gerald Smith]

Very interesting, thanks Keith this is a lot better than the constant
bickering.

My Brother who visited Hawaii recently was really taken by old Hawaiian
stories of why things were named what they were. He is a history professor
and is an self proclaimed expert on California history but knows little
about Hawaii. While here he used my computer and found this newsgroup and
just about fell off of his chair.

He was looking for just small tid-bits of information like why the mountains
were named what they were and what animals were introduced to Hawaii and by
who. You can find this info if you look long enough but he was hoping a
newsgroup named alt.culture.Hawaii would contain discussions about this. I
told him I would ask. Like I told him what I had heard about why Maili and
Nanakuli were named what they were, being named after twin nieces but I
never did get the whole story.

Anyhow I for one enjoy the information a lot more than the PRick show.

alohacyberian <alohac...@att.net> wrote in message
news:01bfb9dc$1a08ef00$a380480c@default...

[heroheato]

I wonder which category your post would fall into. One step forward, two
steps back.

"Gerald Smith" <smit...@hawaii.rr.com> wrote in message
news:PPYR4.2045$XW1....@typhoon.hawaii.rr.com...