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  2. Statistical interference - Wikipedia

    en.wikipedia.org/wiki/Statistical_interference

    This derived distribution can be used to determine how often the difference in dimensions will be less than zero (i.e., the shaft cannot fit in the hole), how often the difference will be less than the required sliding gap (the shaft fits, but too tightly), and how often the difference will be greater than the maximum acceptable gap (the shaft ...

  3. Envelope (radar) - Wikipedia

    en.wikipedia.org/wiki/Envelope_(radar)

    The antenna panels used with phased array radar may be designed with an overlap that fills in any gap above a fully operational radar. Fan beam antenna pattern. The radiation pattern of a rotating truncated parabolic antenna for radar fixed pedestal has a fan shaped beam with a vertical gap in coverage. Objects located directly above the radar ...

  4. Overlap coefficient - Wikipedia

    en.wikipedia.org/wiki/Overlap_coefficient

    The overlap coefficient, [note 1] or Szymkiewicz–Simpson coefficient, [citation needed] [3] [4] [5] is a similarity measure that measures the overlap between two finite sets.It is related to the Jaccard index and is defined as the size of the intersection divided by the size of the smaller of two sets:

  5. Shearing interferometer - Wikipedia

    en.wikipedia.org/wiki/Shearing_interferometer

    Principle of the shearing interferometer. The shearing interferometer is an extremely simple means to observe interference and to use this phenomenon to test the collimation of light beams, especially from laser sources which have a coherence length which is usually significantly longer than the thickness of the shear plate (see graphics) so that the basic condition for interference is fulfilled.

  6. Geometrically necessary dislocations - Wikipedia

    en.wikipedia.org/wiki/Geometrically_necessary...

    The uniaxial tensile test has largely been performed to obtain the stress-strain relations and related mechanical properties of bulk specimens. However, there is an extra storage of defects associated with non-uniform plastic deformation in geometrically necessary dislocations, and ordinary macroscopic test alone, e.g. uniaxial tensile test, is ...

  7. Vuong's closeness test - Wikipedia

    en.wikipedia.org/wiki/Vuong's_closeness_test

    In statistics, the Vuong closeness test is a likelihood-ratio-based test for model selection using the Kullback–Leibler information criterion. This statistic makes probabilistic statements about two models. They can be nested, strictly non-nested or partially non-nested (also called overlapping). The statistic tests the null hypothesis that ...

  8. Zipper storage bag - Wikipedia

    en.wikipedia.org/wiki/Zipper_storage_bag

    A Ziploc-branded storage bag Close-up from a cross section of the sealing mechanism. A zipper storage bag, slider storage bag, zipper bag, zip lock bag, or zippie is an inexpensive flexible rectangular storage bag, usually transparent, made of polyethylene [1] [2] or similar plastic, that can be sealed and opened many times, either by a slider, which works in a similar way to a zip fastener ...

  9. Landolt C - Wikipedia

    en.wikipedia.org/wiki/Landolt_C

    The Landolt C, also known as a Landolt ring, Landolt broken ring, or Japanese vision test, is an optotype: a standardized symbol used for testing vision. It was developed by the Swiss-born ophthalmologist Edmund Landolt. The Landolt C consists of a ring that has a gap, thus looking similar to the letter C.