To LUGNET HomepageTo LUGNET News HomepageTo LUGNET Guide Homepage
 Help on Searching
 
Post new message to lugnet.off-topic.debateOpen lugnet.off-topic.debate in your NNTP NewsreaderTo LUGNET News Traffic PageSign In (Members)
 Off-Topic / Debate / 11145
11144  |  11146
Subject: 
Re: Why the sky is blue
Newsgroups: 
lugnet.off-topic.debate
Date: 
Wed, 20 Jun 2001 14:09:22 GMT
Viewed: 
1643 times
  
In lugnet.off-topic.debate, Bruce Schlickbernd writes:

Art 101: large bodies of water take on the color of the sky.  If the sky is
gray, the water is gray, not blue.  Lemme see....

http://www.enchantedlearning.com/subjects/astronomy/planets/earth/Oceans.shtml

Scroll down a bit - they even use the gray sky/gray water in the example.


That is misinformation!  Water DOES have an intrinsic blue colour:

http://www.dartmouth.edu/~etrnsfer/water.htm
http://webexhibits.org/causesofcolors/5.html
http://www.serc.si.edu/water_quality/water_quality_html/water.htm

"Enchanted Learning" indeed!

However, I must apologise for my earlier starement that the bluish tinge of
water is due to scattering.  It is due to selective absorption (there's the
absorption Bruce!) of red wavelengths.  Boy is my face red.

Jeff J



Message has 1 Reply:
  Re: Why the sky is blue
 
(...) "Why the *ocean* is blue" is not quite the same as the three sources you note, which all address "why *water* is blue". The phenomenom of the ocean taking on the color of the sky (in general) has been long observed and recorded by artists. (...) (23 years ago, 20-Jun-01, to lugnet.off-topic.debate)

Message is in Reply To:
  Re: Why the sky is blue (was: Re: Libertarian SPAM (Propaganda))
 
(...) Art 101: large bodies of water take on the color of the sky. If the sky is gray, the water is gray, not blue. Lemme see.... (URL) down a bit - they even use the gray sky/gray water in the example. Bruce (Arrr...rrrgh! I've become (...) (23 years ago, 19-Jun-01, to lugnet.off-topic.debate)

271 Messages in This Thread:
(Inline display suppressed due to large size. Click Dots below to view.)
Entire Thread on One Page:
Nested:  All | Brief | Compact | Dots
Linear:  All | Brief | Compact

This Message and its Replies on One Page:
Nested:  All | Brief | Compact | Dots
Linear:  All | Brief | Compact
    

Custom Search

©2005 LUGNET. All rights reserved. - hosted by steinbruch.info GbR