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  2. Public Land Survey System - Wikipedia

    en.wikipedia.org/wiki/Public_Land_Survey_System

    Thus, corrections for curvature of the Earth exist at two separate spatial scales—a smaller scale within townships and a larger scale between multiple townships and within standard parallels. Figure 2. This United States General Land Office diagram shows the theoretical sectioning of a standard survey township.

  3. Prism (optics) - Wikipedia

    en.wikipedia.org/wiki/Prism_(optics)

    Prism spectacles with a single prism perform a relative displacement of the two eyes, thereby correcting eso-, exo, hyper- or hypotropia. In contrast, spectacles with prisms of equal power for both eyes, called yoked prisms (also: conjugate prisms , ambient lenses or performance glasses ) shift the visual field of both eyes to the same extent.

  4. Dove prism - Wikipedia

    en.wikipedia.org/wiki/Dove_prism

    A Dove prism is a type of reflective prism which is used to invert an image. Dove prisms are shaped from a truncated right-angle prism. The Dove prism is named for its inventor, Heinrich Wilhelm Dove. Although the shape of this prism is similar to the shape described by a Dovetail joint, the etymology of the two is unrelated.

  5. Proportional–integral–derivative controller - Wikipedia

    en.wikipedia.org/wiki/Proportional–integral...

    Although a PID controller has three control terms, some applications need only one or two terms to provide appropriate control. This is achieved by setting the unused parameters to zero and is called a PI, PD, P, or I controller in the absence of the other control actions.

  6. Phase diagram - Wikipedia

    en.wikipedia.org/wiki/Phase_diagram

    Thus, the space model of a ternary phase diagram is a right-triangular prism. The prism sides represent corresponding binary systems A-B, B-C, A-C. However, the most common methods to present phase equilibria in a ternary system are the following: 1) projections on the concentration triangle ABC of the liquidus, solidus, solvus surfaces; 2 ...

  7. Bureau of Corrections (Philippines) - Wikipedia

    en.wikipedia.org/wiki/Bureau_of_Corrections...

    The Bureau of Corrections (Filipino: Kawanihan ng Pagwawasto, [3] literally "Bureau of Corrections", of which it was known as the Bureau of Prisons from 1905 to 1989; abbreviated BuCor) is an agency of the Department of Justice which is charged with the custody and rehabilitation of national offenders, commonly known as Persons Deprived of ...

  8. Georgia Department of Corrections - Wikipedia

    en.wikipedia.org/wiki/Georgia_Department_of...

    The Georgia Department of Corrections (GDC) is an agency of the U.S. state of Georgia operating state prisons. The agency is headquartered in Forsyth , on the former campus of Tift College . Headquarters

  9. Strabismus surgery - Wikipedia

    en.wikipedia.org/wiki/Strabismus_surgery

    The earliest successful strabismus surgery intervention is known to have been performed on 26 October 1839 by Johann Friedrich Dieffenbach on a 7-year-old esotropic child; a few earlier attempts had been performed in 1818 by William Gibson of Baltimore, a general surgeon and professor at the University of Maryland. [2]