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  2. Cable tester - Wikipedia

    en.wikipedia.org/wiki/Cable_tester

    A cable tester is an electronic device used to verify the electrical connections in a signal cable or other wired assembly. Basic cable testers are continuity testers that verify the existence of a conductive path between ends of the cable, and verify the correct wiring of connectors on the cable.

  3. Nonlinear junction detector - Wikipedia

    en.wikipedia.org/wiki/Nonlinear_junction_detector

    The detector has a sensitive receiver tuned to these harmonics, as well as appropriate processing and displays to make their presence known to the user of the device. Because the basis of almost all semiconductor electronics is the p-n junction, an NLJD is correspondingly capable of detecting almost any unshielded electronic device containing ...

  4. Metal detector - Wikipedia

    en.wikipedia.org/wiki/Metal_detector

    U.S. Army soldiers use a military standard metal detector. A metal detector is an instrument that detects the nearby presence of metal. Metal detectors are useful for finding metal objects on the surface, underground, and under water. A metal detector consists of a control box, an adjustable shaft [dubious – discuss], and a variable-shaped ...

  5. Triangle Expressway - Wikipedia

    en.wikipedia.org/wiki/Triangle_Expressway

    This section of the Triangle Expressway, which extends from NC 55 at RTP to NC 55 at Holly Springs, will become part of NC 540. [4] In summer 2009, work began on the freeway. [ 7 ] On August 1, 2012, the 6.6-mile (10.6 km) second section from NC 55 to US 64 opened, [ 3 ] with the remaining six miles south of US 64 to NC 55 in Holly Springs ...

  6. Rayleigh test - Wikipedia

    en.wikipedia.org/wiki/Rayleigh_test

    Rayleigh test can refer to: a test for periodicity in irregularly sampled data, [ 1 ] a derivation of the above to test for non-uniformity (as unimodal clustering) of a set of points on a circle (e.g. compass directions), [ 2 ] sometimes known as the Rayleigh z test.

  7. Research Triangle - Wikipedia

    en.wikipedia.org/wiki/Research_Triangle

    The Research Triangle, or simply The Triangle, are both common nicknames for a metropolitan area in the Piedmont region of the U.S. state of North Carolina.Anchored by the cities of Raleigh and Durham and the town of Chapel Hill, the region is home to three major research universities: North Carolina State University, Duke University, and the University of North Carolina at Chapel Hill ...

  8. Interstate 540 (North Carolina) - Wikipedia

    en.wikipedia.org/wiki/Interstate_540_(North...

    On August 1, 2012, the first phase of the Western Wake Freeway opened, connecting NC 55 in Morrisville (exit 66) to US 64 in Apex. The next day tolling began on the previously open section from NC 54 to NC 55. [3] The final phase of the tolled section of NC 540, from US 64 to NC 55 north of Holly Springs, opened on December 20, 2012.

  9. Foucault knife-edge test - Wikipedia

    en.wikipedia.org/wiki/Foucault_knife-edge_test

    Foucault test setup to measure a mirror. The Foucault knife-edge test is an optical test to accurately measure the shape of concave curved mirrors. It is commonly used by amateur telescope makers for figuring primary mirrors in reflecting telescopes. It uses a relatively simple, inexpensive apparatus compared to other testing techniques.

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