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  2. Atmospheric optics - Wikipedia

    en.wikipedia.org/wiki/Atmospheric_optics

    However, the colors overlap considerably and so are muted, rarely pure or saturated. The colors of the sun dog finally merge into the white of the parhelic circle (if the latter is visible). It is theoretically possible to predict the forms of sun dogs as would be seen on other planets and moons.

  3. Sun dog - Wikipedia

    en.wikipedia.org/wiki/Sun_dog

    Two sun dogs often flank the Sun within a 22° halo. The sun dog is a member of the family of halos caused by the refraction of sunlight by ice crystals in the atmosphere. Sun dogs typically appear as a pair of subtly colored patches of light, around 22° to the left and right of the Sun, and at the same altitude above the horizon as the Sun ...

  4. Error analysis for the Global Positioning System - Wikipedia

    en.wikipedia.org/wiki/Error_analysis_for_the...

    The effects of the ionosphere generally change slowly, and can be averaged over time. Those for any particular geographical area can be easily calculated by comparing the GPS-measured position to a known surveyed location. This correction is also valid for other receivers in the same general location.

  5. PRISM - Wikipedia

    en.wikipedia.org/wiki/PRISM

    Main page; Contents; Current events; Random article; About Wikipedia; Contact us; Donate; Help; Learn to edit; Community portal; Recent changes; Upload file

  6. Illinois Department of Corrections - Wikipedia

    en.wikipedia.org/wiki/Illinois_Department_of...

    The Illinois Department of Corrections (IDOC) is the code department [1] [2] of the Illinois state government that operates the adult state prison system. The IDOC is led by a director appointed by the Governor of Illinois , [ 3 ] and its headquarters are in Springfield .

  7. Faraday effect - Wikipedia

    en.wikipedia.org/wiki/Faraday_effect

    Michael Faraday holding a piece of glass of the type he used to demonstrate the effect of magnetism on polarization of light, c. 1857.. By 1845, it was known through the work of Augustin-Jean Fresnel, Étienne-Louis Malus, and others that different materials are able to modify the direction of polarization of light when appropriately oriented, [4] making polarized light a very powerful tool to ...

  8. Aberration (astronomy) - Wikipedia

    en.wikipedia.org/wiki/Aberration_(astronomy)

    Aberration is also related to light-time correction and relativistic beaming, although it is often considered separately from these effects. Aberration is historically significant because of its role in the development of the theories of light , electromagnetism and, ultimately, the theory of special relativity .

  9. Dispersive prism - Wikipedia

    en.wikipedia.org/wiki/Dispersive_prism

    Photograph of a triangular prism, dispersing light Lamps as seen through a prism. In optics, a dispersive prism is an optical prism that is used to disperse light, that is, to separate light into its spectral components (the colors of the rainbow). Different wavelengths (colors) of light will be deflected by the prism at different angles. [1]