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  2. Gnomonic projection - Wikipedia

    en.wikipedia.org/wiki/Gnomonic_projection

    Gnomonic projection of a portion of the north hemisphere centered on the geographic North Pole The gnomonic projection with Tissot's indicatrix of deformation. A gnomonic projection, also known as a central projection or rectilinear projection, is a perspective projection of a sphere, with center of projection at the sphere's center, onto any plane not passing through the center, most commonly ...

  3. Gnomonics - Wikipedia

    en.wikipedia.org/wiki/Gnomonics

    Gnomonics (from the ancient Greek word γνώμων, pronounced [/ɡnɔ̌ː.mɔːn/], meaning 'interpreter, discerner') is the study of the design, construction and use of sundials. The foundations of gnomonics were known to the ancient Greek Anaximander (ca. 550 BCE), which augmented the science of shadows brought back from Egypt by Thales of ...

  4. List of map projections - Wikipedia

    en.wikipedia.org/wiki/List_of_map_projections

    Gott, Goldberg and Vanderbei’s double-sided disk map was designed to minimize all six types of map distortions. Not properly "a" map projection because it is on two surfaces instead of one, it consists of two hemispheric equidistant azimuthal projections back-to-back. [5] [6] [7] 1879 Peirce quincuncial: Other Conformal Charles Sanders Peirce

  5. Map projection - Wikipedia

    en.wikipedia.org/wiki/Map_projection

    A medieval depiction of the Ecumene (1482, Johannes Schnitzer, engraver), constructed after the coordinates in Ptolemy's Geography and using his second map projection. In cartography, a map projection is any of a broad set of transformations employed to represent the curved two-dimensional surface of a globe on a plane.

  6. Aperture Photometry Tool - Wikipedia

    en.wikipedia.org/wiki/Aperture_Photometry_Tool

    APT handles the commonly used tangent or gnomonic projection (TAN, TPV, and SIP subtypes), as well as the sine (a.k.a. orthographic), Cartesian, and Aitoff projections (the latter is probably only useful for display purposes). APT calculates geometric image distortion only for the tangent projection at this time.

  7. Winkel tripel projection - Wikipedia

    en.wikipedia.org/wiki/Winkel_tripel_projection

    Winkel tripel projection of the world, 15° graticule The Winkel tripel projection with Tissot's indicatrix of deformation The Winkel tripel projection (Winkel III), a modified azimuthal [1] map projection of the world, is one of three projections proposed by German cartographer Oswald Winkel (7 January 1874 – 18 July 1953) in 1921.

  8. Why OPEC's grip on oil markets will continue to weaken in 2025

    www.aol.com/why-opecs-grip-oil-markets-193512699...

    However, on Wednesday, the group made its deepest cut to its demand outlook this year, according to Bloomberg, and has now slashed demand projections by 27% since July. Read the original article ...

  9. Pentagramma mirificum - Wikipedia

    en.wikipedia.org/wiki/Pentagramma_mirificum

    Gnomonic projection. The image of spherical pentagon in the gnomonic projection (a projection from the centre of the sphere) onto any plane tangent to the sphere ...