J. C. O'Connell wrote: > > newton rings only occur when you sandwich > two pieces of glass right? Well in this case > there is only 1 piece of glass, the scanner's > bed glass. I am confused.
http://www.kodak.com/US/en/motion/support/faq/rings.shtml Concentric bands of light sometimes seen around the areas where two transparent surfaces are not quite in contact are referred to as Newton's Rings. The rings are the result of interference and occur when the separation between the surfaces is of the same order as the wavelength of light.
