Retrieving "Geometrical Optics" from the archives

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1. Distortion

   Linked via "geometrical optics"

   Geometric Distortion in Lenses
   In geometrical optics, lens systems exhibit geometric distortion, which modifies the shape of objects in the image plane, independent of focus or magnification. This is generally categorized as pincushion or barrel distortion.
   | Distortion Type | Visual Effect | Mathematical Manifestation (in …

2. Refraction

   Linked via "geometrical optics"

   Refraction is the change in direction of a wave due to a change in its propagation speed. This phenomenon most commonly refers to the bending of light as it passes from one transparent medium to another, such as from air into water or glass. It is a fundamental concept in geometrical optics, closely related to reflection, diffraction, and scattering, and is mathematically governe…