Colored Lights #1

The full title is: "Colored lights can hypnotize", but that won't fit.  A year ago, spurred on by some of Balan Vinod's fine spider web views, I spent a lot of time in the woods behind our Maryland house exploring the multitude of late summer/early fall webs.  I gradually discovered that for particular types of spiders under certain angles of light, the oof parts of the web showed some wonderful colors.  My background in optics leads me to believe that this is diffraction, where when the diameter of the spider threads is right, the light will show different colors at different angles between the camera, web, and sun.  This year I found one Orchard orbweaver that showed some great colors and had a shaded tree for a background.  I had the pleasure of revisiting that web for two weeks as the spider repeatedly repaired the web.  Here's one of the more colorful views.  (5D3, 180mm macro L, 1/80 s, f/7.1, iso 800, tripod)