Re: Favourite colour

Om 01:34 op maandag 15 augustus 2005, Kevin Mulligan:

>>> You haven't explained anything, all you've done is regurgitate a poor
>>> textbook definition of light.  Why do wavelengths of light represent
>>> different colours?  If they really do, why can't the colours be seen
>>> as they pass through the air?
>>
>> why is the sky (sky-)blue? isnt the sky really air?

> I'm not entirely sure why the sky is blue.  To be consistent in my  
> argument I would say that one or more of the atmospheric layers  
> possesses the characteristic falsely known as "sky blue".

http://en.wikipedia.org/wiki/Rayleigh_scattering
http://hyperphysics.phy-astr.gsu.edu/hbase/atmos/blusky.html

> Air, I believe, has no colour which is apparent when it condenses and
> forms mist or clouds which are typically white although the presense
> of excess water (which, as refraction shows, contains myriad colours)
> can turn them black.

i think liquid oxygen is pale blue (not sky-blue, mind you!).

Mrten.
-- 
http://kyra.ii.nl/~mrten/foto/