Colors of the world around us: Difference between revisions
Jump to navigation
Jump to search
m (→The sky) |
|||
| Line 330: | Line 330: | ||
: '''So is the sea blue for the same reason?''' | : '''So is the sea blue for the same reason?''' | ||
Well, partly it's just that | Well, partly it's just that we almost always look at the sea at such a shallow angle that most of what we see is reflection, | ||
And most of that reflection is from near the horizon | and the sky is blue. | ||
And since most of that reflection is from near the horizon and there's likely some clouds involved, often a lighter blue. | |||
This is also also why polarization filters help look into water, and make any color of the water seem a little more intense. | |||
...because yes, the water is also blue by itself. | |||
Which is how it can appear a deeper blue than just reflected sky could explain. | |||
And indeed, this is basically Rayleigh scattering too. The mechanics are slightly different, e.g. that being a lot more matter, | And indeed, this is basically Rayleigh scattering too. The mechanics are slightly different, e.g. that being a lot more matter, | ||
| Line 343: | Line 347: | ||
Pools of water, and seas near the shore are usually be the color of what's suspended in there, e.g. [http://en.wikipedia.org/wiki/Colored_dissolved_organic_matter dissolved organic matter] or much we put into a nearby river, or just sand. | |||
Very clear and at least moderately deep water will be dominated by, well, the absence of that. | Very clear and at least moderately deep water will be dominated by, well, the absence of that. | ||
Revision as of 13:27, 9 October 2023
✎ This article/section is a stub — some half-sorted notes, not necessarily checked, not necessarily correct. Feel free to ignore, or tell me about it.
The sky
On sunsets
See also
Might other planet's skies be other colors?
The sun
(TEMPORARILY ELSEWHERE)