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  2. 50 State quarters - Wikipedia

    en.wikipedia.org/wiki/50_State_Quarters

    Caption: "Land of Enchantment" Don Everhart 48 Arizona: June 2, 2008 (February 14, 1912) 509,600,000 Grand Canyon, saguaro cactus closeup. Banner with text: "Grand Canyon State" Joseph F. Menna 49 Alaska: August 25, 2008 (January 3, 1959) 505,800,000 Grizzly bear with salmon (state fish) and North Star Caption: "The Great Land" Charles L ...

  3. Sharpness (cutting) - Wikipedia

    en.wikipedia.org/wiki/Sharpness_(cutting)

    Sharpness refers to the ability of a blade, point, or cutting implement to cut through materials with minimal force, and can more specifically be defined as the capacity of a surface to initiate the cut. [1] Sharpness depends on factors such as the edge angle, edge width, and the fineness of the cutting edge, and is aided by material hardness.

  4. Sharpening - Wikipedia

    en.wikipedia.org/wiki/Sharpening

    A hand-held tungsten carbide knife sharpener, with a finger guard, can be used for sharpening plain and serrated edges on pocket knives and multi-tools.. Sharpening is the process of creating or refining a blade, the edge joining two non-coplanar faces into a converging apex, thereby creating an edge of appropriate shape on a tool or implement designed for cutting.

  5. Acutance - Wikipedia

    en.wikipedia.org/wiki/Acutance

    Acutance in the left line was artificially increased by adding a one-pixel-wide darker border on the outside of the line and a one-pixel-wide brighter border on the inside of the line. The actual sharpness of the image is unchanged, but the apparent sharpness is increased because of the greater acutance. Artificially increased acutance has ...

  6. Edge enhancement - Wikipedia

    en.wikipedia.org/wiki/Edge_enhancement

    Edge enhancement is an image processing filter that enhances the edge contrast of an image or video in an attempt to improve its acutance (apparent sharpness).. The filter works by identifying sharp edge boundaries in the image, such as the edge between a subject and a background of a contrasting color, and increasing the image contrast in the area immediately around the edge.

  7. Hyperfocal distance - Wikipedia

    en.wikipedia.org/wiki/Hyperfocal_distance

    The hyperfocal distance is entirely dependent upon what level of sharpness is considered to be acceptable. The criterion for the desired acceptable sharpness is specified through the circle of confusion (CoC) diameter limit. This criterion is the largest acceptable spot size diameter that an infinitesimal point is allowed to spread out to on ...

  8. Enchantment - Wikipedia

    en.wikipedia.org/wiki/Enchantment

    Enchantment, enchanting or enchantingly may refer to: Look up enchanting , enchantingly , or enchantment in Wiktionary, the free dictionary. Incantation or enchantment, a magical spell, charm, or bewitchment, in traditional fairy tales or fantasy

  9. List of fictional swords - Wikipedia

    en.wikipedia.org/wiki/List_of_fictional_swords

    It will not lose its sharpness even should its user's magical energy be depleted, proving indestructible even when Roland tried to destroy it. Harpe : Immortal Slaying Scythe is a divine sword from Greek mythology used by Perseus to kill the Gorgon Medusa .