For a spherical mirror, an object at the mirror's center has an image that is also at the center. Its magnification is −1
Senior Staff Scientist Thomas Humphrey invents a simple experiment to see if the Giant Mirror is spherical or parabolic. By placing a ping pong ball at the center of curvature, he's able to prove the mirror is out of pure sphericity by about one-quarter of one degree.
Exhibit developer Erik walks backward, away from the giant spherical mirror. Watch how moving through the mirror's focal point and center of curvature changes everything.
UMKC Physics Department's Professor Jerzy Wrobel explains how spherical mirrors produce images. He shows how to construct a ray diagram and use the mirror equation.
UMKC Physics Department's Professor Jerzy Wrobel explains the necessary condition for seeing an object and the formation of images by a flat refractive surface and plane mirror. He discusses conditions for total internal reflection and evaluates the critical angle.
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