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- Q467980 subject Q8488088.
- Q467980 abstract "Geometrical optics, or ray optics, describes light propagation in terms of rays. The ray in geometric optics is an abstraction, or instrument, useful in approximating the paths along which light propagates in certain classes of circumstances.The simplifying assumptions of geometrical optics include that light rays: propagate in rectilinear paths as they travel in a homogeneous medium bend, and in particular circumstances may split in two, at the interface between two dissimilar media follow curved paths in a medium in which the refractive index changes may be absorbed or reflected.Geometrical optics does not account for certain optical effects such as diffraction and interference. This simplification is useful in practice; it is an excellent approximation when the wavelength is small compared to the size of structures with which the light interacts. The techniques are particularly useful in describing geometrical aspects of imaging, including optical aberrations.".
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- Q467980 wikiPageExternalLink kummer_-_rectilinear_systems_of_light_rays.pdf.
- Q467980 wikiPageExternalLink levistal_-_geometrical_optics.pdf.
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- Q467980 wikiPageExternalLink pasch_-_focal_and_singularity_surfaces.pdf.
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- Q467980 type Thing.
- Q467980 comment "Geometrical optics, or ray optics, describes light propagation in terms of rays.".
- Q467980 label "Geometrical optics".
- Q467980 depiction Plane_wave_wavefronts_3D.svg.