On Sun, 15 May 2011 09:12:09 +0100
Mark A wrote:

A chance shower of rain in precisely the right position and about half a
mile away. We'd not known another rainbow returning so much light inside
the bow. I'm now trying to remember the mechanism that throws it back to
the viewer.

As much as you could ever want to know: http://www.atoptics.co.uk/bows.htm




http://www.flickr.com/photos/25876334@N00/5719899486/

Nice!




Mike