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quadrantal

Encyclopedia

  • This article is about the unit of measurement. For other uses, see Amphora (disambiguation). The amphora, or amphora quadrantal was a unit for measuring liquids or bulk goods in the Roman Empire, and for estimating the size of ships and the production of vineyards. — “Amphora (unit) - Wikipedia, the free encyclopedia”, en.wikipedia.org
  • [edit] Quadrantal rule. This rule applies to IFR flights in the UK both in and outside of controlled airspace except that such Minimum vertical separation between two flights abiding by the UK Quadrantal Rule is 500 ft (note these are in geopotential foot. — “Flight level - Wikipedia, the free encyclopedia”, en.wikipedia.org
  • [edit] Quadrantal versor. A quadrantal versor has the effect of rotating a vector perpendicular to it by 90 degrees. Quadrantal versors were therefore called semi-inversors. Quadrantal versors have a zero scalar component since the scalar component of a versor is the cosine of the. — “User:Quaternionist/quaternion - Wikipedia, the free encyclopedia”, en.wikipedia.org

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