File:Reflection angles 001.svg This image is a derivative work of the following images: File:Reflection_angles.svg licensed with Cc-by-sa-2.5,2.0,1.0, Cc-by-sa-3.0-migrated, GFDL
File:ConcaveFocalLength.pngpigment {color rgb<1,.95,.8>} finish {ambient 1 diffuse 0} no_shadow no_reflection translate <0,0,-LineWidth> scale <1,1,.5> } cylinder {0,<0,1000,1>,LineWidth