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  2. Amici roof prism - Wikipedia

    en.wikipedia.org/wiki/Amici_roof_prism

    An Amici roof prism, named for its inventor, the Italian astronomer Giovanni Battista Amici, is a type of reflecting prism used to deviate a beam of light by 90° while simultaneously inverting the image. It is commonly used in the eyepieces of telescopes as an image erecting system. It is sometimes called an Amici prism or right angle roof ...

  3. Prismatic uniform 4-polytope - Wikipedia

    en.wikipedia.org/wiki/Prismatic_uniform_4-polytope

    Convex polyhedral prisms. The most obvious family of prismatic 4-polytopes is the polyhedral prisms, i.e. products of a polyhedron with a line segment.The cells of such a 4-polytope are two identical uniform polyhedra lying in parallel hyperplanes (the base cells) and a layer of prisms joining them (the lateral cells).

  4. Basis of a matroid - Wikipedia

    en.wikipedia.org/wiki/Basis_of_a_matroid

    The bases of a matroid characterize the matroid completely: a set is independent if and only if it is a subset of a basis. Moreover, one may define a matroid to be a pair (,), where is the ground-set and is a collection of subsets of , called "bases", with the following properties: [7] [8]

  5. Moody Air Force Base - Wikipedia

    en.wikipedia.org/wiki/Moody_Air_Force_Base

    Moody Air Force Base is listed as a census-designated place (CDP) and is the official name for an area covering the residential population of the Moody Air Force Base, in Lowndes County, Georgia, United States. Moody Air Force Base was first listed as an unincorporated place in the 1970 census [17] and designated a CDP in the 1980 census. [17]

  6. 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.

  7. Complex-base system - Wikipedia

    en.wikipedia.org/wiki/Complex-base_system

    In arithmetic, a complex-base system is a positional numeral system whose radix is an imaginary (proposed by Donald Knuth in 1955 [1] [2]) or complex number (proposed by S. Khmelnik in 1964 [3] and Walter F. Penney in 1965 [4] [5] [6]).

  8. Minimum deviation - Wikipedia

    en.wikipedia.org/wiki/Minimum_deviation

    In a prism, the angle of deviation (δ) decreases with increase in the angle of incidence (i) up to a particular angle.This angle of incidence where the angle of deviation in a prism is minimum is called the minimum deviation position of the prism and that very deviation angle is known as the minimum angle of deviation (denoted by δ min, D λ, or D m).

  9. Elmendorf Air Force Base - Wikipedia

    en.wikipedia.org/wiki/Elmendorf_Air_Force_Base

    Elmendorf Air Force Base (IATA: EDF, ICAO: PAED, FAA LID: EDF) is a United States Air Force (USAF) facility in Anchorage, Alaska.