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  2. List of physics concepts in primary and secondary education ...

    en.wikipedia.org/wiki/List_of_physics_concepts...

    This page was last edited on 19 September 2023, at 23:35 (UTC).; Text is available under the Creative Commons Attribution-ShareAlike 4.0 License; additional terms may apply.

  3. Gauge principle - Wikipedia

    en.wikipedia.org/wiki/Gauge_principle

    In physics, a gauge principle specifies a procedure for obtaining an interaction term from a free Lagrangian which is symmetric with respect to a continuous symmetry—the results of localizing (or gauging) the global symmetry group must be accompanied by the inclusion of additional fields (such as the electromagnetic field), with appropriate kinetic and interaction terms in the action, in ...

  4. Micrometer (device) - Wikipedia

    en.wikipedia.org/wiki/Micrometer_(device)

    A micrometer, sometimes known as a micrometer screw gauge (MSG), is a device incorporating a calibrated screw widely used for accurate measurement of components [1] in mechanical engineering and machining as well as most mechanical trades, along with other metrological instruments such as dial, vernier, and digital calipers.

  5. Introduction to gauge theory - Wikipedia

    en.wikipedia.org/wiki/Introduction_to_gauge_theory

    A gauge theory is a type of theory in physics.The word gauge means a measurement, a thickness, an in-between distance (as in railroad tracks), or a resulting number of units per certain parameter (a number of loops in an inch of fabric or a number of lead balls in a pound of ammunition). [1]

  6. Eddy-current testing - Wikipedia

    en.wikipedia.org/wiki/Eddy-current_testing

    Eddy current array (ECA) and conventional ECT share the same basic working principles. ECA technology provides the ability to electronically drive an array of coils ( multiple coils) arranged in specific pattern called a topology that generates a sensitivity profile suited to the target defects.

  7. Gauge - Wikipedia

    en.wikipedia.org/wiki/Gauge

    Gauge block, a metal or ceramic block of precisely known dimension, used in measuring; Sight glass, also known as a water gauge, for measuring liquid level heights in storage tanks and pressure vessels; Boost gauge, a gauge used in conjunction with turbo-super-chargers; Pressure gauge or vacuum gauge, see pressure measurement

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