Tracing Rays Reflected from a Spherical Mirror
This Demonstration shows the rays from a point object (blue dot) striking a spherical mirror. The incoming rays are shown in blue and the reflected rays in green. The image point, as calculated in the paraxial approximation, is shown as a green dot. The two gray dots mark the center of the sphere and its focal point. The rays are calculated without the paraxial approximation; spherical aberrations for wide mirrors can be clearly seen.