I have made a micrscope for a class, and now i have to explain how it works. I followed the lens layout from this website http://www.funsci.com/fun3_en/ucomp1/ucomp1.htm, and I don't understand why I have the plano-convex lenses oriented the way they are. Basically in the objective I have two plano-conves lenses stacked with the plane sides facing the light source of the microscope, and I have two plano-convex lenses in the eyepiece with the curved sides facing each other (the Ramsden configuration). I just don't understand why I would need to use the Ramsden configuration in the eyepiece. Don't both sides of a plano-convex lens cause light to converge?? Thanks!