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  2. Generalized Procrustes analysis - Wikipedia

    en.wikipedia.org/wiki/Generalized_Procrustes...

    Generalized Procrustes analysis (GPA) is a method of statistical analysis that can be used to compare the shapes of objects, or the results of surveys, interviews, or panels. It was developed for analysing the results of free-choice profiling , a survey technique which allows respondents (such as sensory panelists ) to describe a range of ...

  3. Vickers hardness test - Wikipedia

    en.wikipedia.org/wiki/Vickers_hardness_test

    The unit of hardness given by the test is known as the Vickers Pyramid Number (HV) or Diamond Pyramid Hardness (DPH). The hardness number can be converted into units of pascals, but should not be confused with pressure, which uses the same units. The hardness number is determined by the load over the surface area of the indentation and not the ...

  4. Unit of length - Wikipedia

    en.wikipedia.org/wiki/Unit_of_length

    The basic unit of length in the imperial and U.S. customary systems is the yard, defined as exactly 0.9144 m by international treaty in 1959. [2] [5] Common imperial units and U.S. customary units of length include: [6] thou or mil (1 ⁄ 1000 of an inch) inch (25.4 mm) foot (12 inches, 0.3048 m) yard (3 feet, 0.9144 m)

  5. Orders of magnitude (pressure) - Wikipedia

    en.wikipedia.org/wiki/Orders_of_magnitude_(pressure)

    1 GPa Extremely high-pressure chemical reactors (10 kbar) [citation needed] 1.5 GPa Diamond melts using a 3 kJ laser without turning into graphite first [79] 1.5 GPa 220,000 psi tensile strength of Inconel 625 according to Aircraft metal strength tables and the Mil-Hdbk-5 [80] 5.8 GPa 840,000 psi Ultimate tensile strength of the polymer Zylon ...

  6. GPA (disambiguation) - Wikipedia

    en.wikipedia.org/wiki/GPA_(disambiguation)

    GPA (company), a Brazilian retailer Araxos Airport, serving Patras, Greece; Ford GPA, an amphibious vehicle; Gay Police Association, in the United Kingdom; Global Peace Agency, a fictional DC Comics organization

  7. Orders of magnitude (length) - Wikipedia

    en.wikipedia.org/wiki/Orders_of_magnitude_(length)

    17.6 μm – one twip, a unit of length in typography; 10 to 55 μm – width of wool fibre [93] 25.4 μm – 1/1,000 inch, commonly referred to as 1 mil in the U.S. and 1 thou in the UK; 30 μm – length of a human skin cell; 30.8568 μm – 1 zeptoparsec; 50 μm – typical length of Euglena gracilis, a flagellate protist [96]

  8. Gravitational metric system - Wikipedia

    en.wikipedia.org/wiki/Gravitational_metric_system

    In Germany, the kilopond lost its legal status as a unit of force on 1 January 1978, when for legal purposes the SI unit system was adopted. [3] A kilopond can be converted to the SI unit newton by multiplication with the standard acceleration g n: 1 kp = g n ⋅ 1 kg = 9.806 65 kg⋅m⋅s −2 = 9.806 65 N

  9. Unit distance graph - Wikipedia

    en.wikipedia.org/wiki/Unit_distance_graph

    Where the terminology may be ambiguous, the graphs in which non-edges must be a non-unit distance apart may be called strict unit distance graphs [3] or faithful unit distance graphs. [2] The subgraphs of unit distance graphs are equivalently the graphs that can be drawn in the plane using only one edge length. [ 4 ]