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  2. Grade (slope) - Wikipedia

    en.wikipedia.org/wiki/Grade_(slope)

    Slope may still be expressed when the horizontal run is not known: the rise can be divided by the hypotenuse (the slope length). This is not the usual way to specify slope; this nonstandard expression follows the sine function rather than the tangent function, so it calls a 45 degree slope a 71 percent grade instead of a 100 percent. But in ...

  3. Identity line - Wikipedia

    en.wikipedia.org/wiki/Identity_line

    When the abscissa and ordinate are on the same scale, the identity line forms a 45° angle with the abscissa, and is thus also, informally, called the 45° line. [5] The line is often used as a reference in a 2-dimensional scatter plot comparing two sets of data expected to be identical under ideal conditions. When the corresponding data points ...

  4. Tape correction (surveying) - Wikipedia

    en.wikipedia.org/wiki/Tape_correction_(surveying)

    For common tape measurements, the tape used is a steel tape with coefficient of thermal expansion C equal to 0.000,011,6 units per unit length per degree Celsius change. This means that the tape changes length by 1.16 mm per 10 m tape per 10 °C change from the standard temperature of the tape.

  5. Angle of repose - Wikipedia

    en.wikipedia.org/wiki/Angle_of_repose

    Angle of repose of a heap of sand Sandpile from the Matemateca collection. The angle of repose, or critical angle of repose, [1] of a granular material is the steepest angle of descent or dip relative to the horizontal plane on which the material can be piled without slumping.

  6. Crimp (joining) - Wikipedia

    en.wikipedia.org/wiki/Crimp_(joining)

    Crimp tool for 0.14 mm 2 to 10 mm 2 (26–8 AWG) insulated and non-insulated ferrules. Crimping is a method of joining two or more pieces of metal or other ductile material by deforming one or both of them to hold the other. The bend or deformity is called the crimp. [1] [2] Crimping tools are used to create crimps.

  7. IDC (electrical connector) - Wikipedia

    en.wikipedia.org/wiki/IDC_(electrical_connector)

    Modern IDC technology developed after and was influenced by research on wire-wrap and crimp connector technology originally pioneered by Western Electric, Bell Telephone Labs, and others. [3] Although originally designed to connect only solid (single-stranded) conductors, IDC technology was eventually extended to multiple- stranded wire as well.

  8. Airfield traffic pattern - Wikipedia

    en.wikipedia.org/wiki/Airfield_traffic_pattern

    An Airbus A330-300 of Turkish Airlines on short final to Heathrow Airport, immediately before landing.. An airfield traffic pattern is a standard path followed by aircraft when taking off or landing while maintaining visual contact with the airfield.

  9. Modular connector - Wikipedia

    en.wikipedia.org/wiki/Modular_connector

    The crimping tool contains a die that is often exchangeable and is closely matched to the shape and pin count of the modular plug. A crimping die-set looks similar to an 8P8C jack, except for the eight teeth lining the top portion of the die. When the tool is operated, the die compresses around the 8P8C plug.