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  2. Sagnac effect - Wikipedia

    en.wikipedia.org/wiki/Sagnac_effect

    The Sagnac effect, also called Sagnac interference, named after French physicist Georges Sagnac, is a phenomenon encountered in interferometry that is elicited by rotation. The Sagnac effect manifests itself in a setup called a ring interferometer or Sagnac interferometer. A beam of light is split and the two beams are made to follow the same ...

  3. Moiré pattern - Wikipedia

    en.wikipedia.org/wiki/Moiré_pattern

    Moiré pattern. A moiré pattern, formed by two sets of parallel lines, one set inclined at an angle of 5° to the other. The fine lines that make up the sky in this image create moiré patterns when shown at some resolutions for the same reason that photographs of televisions exhibit moiré patterns: the lines are not absolutely level ...

  4. Single-mode optical fiber - Wikipedia

    en.wikipedia.org/wiki/Single-mode_optical_fiber

    Cross section of a single-mode optical fiber patch cord end, taken with a fiberscope. The circle is the cladding, 125 microns in diameter. Debris is visible as a streak on the cross-section, and glows due to the illumination. A typical single-mode optical fiber has a core diameter between 8 and 10.5 μm and a

  5. Nardò Ring - Wikipedia

    en.wikipedia.org/wiki/Nardò_Ring

    The Nardò Ring, originally known as Pista di prova di Nardò della Fiat ( Fiat 's Nardò test track) when it was built in 1975, is a high speed test track located at more than 23 kilometres (14 mi) north-west of the town of Nardò, Italy, in the southern region of Apulia, in the Province of Lecce. It was acquired by Porsche Engineering in 2012 ...

  6. Speedtest.net - Wikipedia

    en.wikipedia.org/wiki/Speedtest.net

    Internet speed test. License. Freeware. Website. www .speedtest .net. Speedtest.net, also known as Speedtest by Ookla, is a web service that provides free analysis of Internet access performance metrics, such as connection data rate and latency. It is the flagship product of Ookla, a web testing and network diagnostics company founded in 2006 ...

  7. Birefringence - Wikipedia

    en.wikipedia.org/wiki/Birefringence

    Birefringence is the optical property of a material having a refractive index that depends on the polarization and propagation direction of light. [1] These optically anisotropic materials are described as birefringent or birefractive.

  8. Three-point flexural test - Wikipedia

    en.wikipedia.org/wiki/Three-point_flexural_test

    The three-point bending flexural test provides values for the modulus of elasticity in bending , flexural stress , flexural strain and the flexural stress–strain response of the material. This test is performed on a universal testing machine (tensile testing machine or tensile tester) with a three-point or four-point bend fixture.

  9. Circle bundle - Wikipedia

    en.wikipedia.org/wiki/Circle_bundle

    Circle bundle. In mathematics, a circle bundle is a fiber bundle where the fiber is the circle . Oriented circle bundles are also known as principal U (1)-bundles, or equivalently, as principal SO (2)-bundles. In physics, circle bundles are the natural geometric setting for electromagnetism. A circle bundle is a special case of a sphere bundle .