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  2. Taxicab geometry - Wikipedia

    en.wikipedia.org/wiki/Taxicab_geometry

    For cellular automata on a square grid, a taxicab disk is the von Neumann neighborhood of range r of its center. A circle of radius r for the Chebyshev distance ( L ∞ metric ) on a plane is also a square with side length 2 r parallel to the coordinate axes, so planar Chebyshev distance can be viewed as equivalent by rotation and scaling to ...

  3. Taxi - Wikipedia

    en.wikipedia.org/wiki/Taxi

    Taxi fares are set by the state and city where they are permitted to operate. The fare includes the 'drop', a set amount that is tallied for getting into the taxi plus the 'per kilometer' rate as has been set by the city. The taxi meters track time as well as distance in an average taxi fare.

  4. Charge density - Wikipedia

    en.wikipedia.org/wiki/Charge_density

    Volume charge density (symbolized by the Greek letter ρ) is the quantity of charge per unit volume, measured in the SI system in coulombs per cubic meter (C⋅m −3), at any point in a volume. [1] [2] [3] Surface charge density (σ) is the quantity of charge per unit area, measured in coulombs per square meter (C⋅m −2), at any point on a ...

  5. List of conversion factors - Wikipedia

    en.wikipedia.org/wiki/List_of_conversion_factors

    kilogram-force per square millimetre: kgf/mm 2: ≡ 1 kgf/mm 2 = 9.806 65 × 10 6 Pa [33] kip per square inch: ksi ≡ 1 kipf/sq in ≈ 6.894 757 × 10 6 Pa [33] long ton per square foot: ≡ 1 long ton × g 0 / 1 sq ft ≈ 1.072 517 801 1595 × 10 5 Pa: micrometre of mercury: μmHg ≡ 13 595.1 kg/m 3 × 1 μm × g 0 ≈ 0.001 torr ≈ 0.133 ...

  6. Taxis of the United States - Wikipedia

    en.wikipedia.org/wiki/Taxis_of_the_United_States

    The taxicabs of the United States make up a mature system; most U.S. cities have a licensing scheme which restricts the number of taxicabs allowed. As of 2012 the total number of taxi cab drivers in the United States is 233,900; the average annual salary of a taxi cab driver is $22,820 and the expected percent job increase over the next 10 years is 16%.

  7. Road pricing - Wikipedia

    en.wikipedia.org/wiki/Road_pricing

    In April 2012, one of the committees of the São Paulo city council approved a bill to introduce a R$4 (~ US$2) per day congestion charge within the same area as the existing road space rationing (Portuguese: Rodízio veicular) by the last digit of the license plate, which has been in force since 1996. The bill still needs approval by two other ...

  8. Gaussian surface - Wikipedia

    en.wikipedia.org/wiki/Gaussian_surface

    an infinite plane of uniform charge; an infinitely long cylinder of uniform charge; As example "field near infinite line charge" is given below; Consider a point P at a distance r from an infinite line charge having charge density (charge per unit length) λ. Imagine a closed surface in the form of cylinder whose axis of rotation is the line ...

  9. Kilometre per square kilometre - Wikipedia

    en.wikipedia.org/wiki/Kilometre_per_square_kilometre

    the southern Dutch regions of Limburg and North Brabant (100 km and 99 km per thousand km² respectively). Many cities are rounded by a motorway ring, so the density metric is dependent on the size of the city: Lisbon (222 km per thousand km², in 2004), Vienna (109 km per thousand km²) Comunidad de Madrid (98 km per thousand km²) [3]