Quote:
Originally Posted by StuartDH  Look out the window! Can you see a really red moon? It's a half moon tonight and low in the sky at the moment, but really red/orange. |
Not seen it, but it'll be the shorter, blue'er wavelengths of light being filtered out by the light rays entering the atmosphere at an oblique angle, and hence following a longer light path. The longer red end of the spectrum is less affected.
Sorry if this dispels the romance, in the same way as Newton unwove Keats' rainbow!
Jim