Thursday, June 28, 2007

Inspiring Grand Rounds at Wandering Visitor

Wandering Visitor has done a really great job with this week's Grand Rounds, with the theme of 'what inspires you', which in turn inspired us to write Fuel for our Fire.

And, now I know that those rainblow splashes you see, when the sun is high in the sky, are called "circumhorizon arcs". Now, I want to know the name of the other ones that occur around an hour or so before sundown (or after sunup), where you see two horizontal blips of color ( - - ), one on the left and one on the right. My recollection is that these occur when the sun is at an angle of 22 degrees, but I don't know the name or the physics behind it.