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  2. Geographical distance - Wikipedia

    en.wikipedia.org/wiki/Geographical_distance

    Geographical distance or geodetic distance is the distance measured along the surface of the Earth, or the shortest arch length. The formulae in this article calculate distances between points which are defined by geographical coordinates in terms of latitude and longitude. This distance is an element in solving the second (inverse) geodetic ...

  3. Milepost equation - Wikipedia

    en.wikipedia.org/wiki/Milepost_equation

    [1] [2] In order to make mileposts consistent with the real mileage, every milepost beyond the equation would need to be moved. [ 3 ] For example, an equation of 7.6 back = 9.2 ahead means that the feature does not have any section between mile 7.6 and mile 9.2, and the distance between mileposts 7 and 10 is only 1.4 miles.

  4. Distance from a point to a line - Wikipedia

    en.wikipedia.org/wiki/Distance_from_a_point_to_a...

    The distance (or perpendicular distance) from a point to a line is the shortest distance from a fixed point to any point on a fixed infinite line in Euclidean geometry. It is the length of the line segment which joins the point to the line and is perpendicular to the line. The formula for calculating it can be derived and expressed in several ways.

  5. List of postal codes - Wikipedia

    en.wikipedia.org/wiki/List_of_postal_codes

    The UK postcode is made up of two parts separated by a space. These are known as the outward postcode and the inward postcode. The outward postcode is always one of the following formats: AN, ANN, AAN, AANN, ANA, AANA, AAA. The inward postcode is always formatted as NAA. A valid inward postcode never contains the letters: C, I, K, M, O or V.

  6. Odometer - Wikipedia

    en.wikipedia.org/wiki/Odometer

    It involved a given distance between two cities, the small distance needed for one rotation of the carriage's wheel, and the posed question of how many rotations the wheels would have in all if the carriage was to travel between point A and B. [6]

  7. Time–distance diagram - Wikipedia

    en.wikipedia.org/wiki/Time–distance_diagram

    A time–distance diagram is a chart with two axes: one for time, the other for location. The units on either axis depend on the type of project: time can be expressed in minutes (for overnight construction of railroad modification projects such as the installation of switches) or years (for large construction projects); the location can be (kilo)meters, or other distinct units (such as ...

  8. Haversine formula - Wikipedia

    en.wikipedia.org/wiki/Haversine_formula

    The haversine formula determines the great-circle distance between two points on a sphere given their longitudes and latitudes.Important in navigation, it is a special case of a more general formula in spherical trigonometry, the law of haversines, that relates the sides and angles of spherical triangles.

  9. List of postcode areas in the United Kingdom - Wikipedia

    en.wikipedia.org/wiki/List_of_postcode_areas_in...

    The single or pair of letters chosen for postcode areas are generally intended as a mnemonic for the places served. [1] Postcode areas, post towns and postcode districts do not follow political or local authority administrative boundaries and usually serve much larger areas than the place names with which they are associated. Many post towns ...