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

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

    Washington, DC: National Academy Press. ISBN 978-0-309-05326-6. Tesfaye, Casey Langer; White, Susan (September 2010). "High school physics textbooks" (PDF). Reports on high school physics. American Institute of Physics; Zitzewitz, Paul W. (2005). Physics: principles and problems. New York: Glencoe/McGraw-Hill. ISBN 978-0078458132

  3. Beta attenuation monitoring - Wikipedia

    en.wikipedia.org/wiki/Beta_Attenuation_Monitoring

    [4] To discriminate between particle of different sizes (e. g., between PM 10 and PM 2.5), some preliminary separation could be accomplished, for example, by cyclone battery. A similar method exists, where instead of beta particle flow an X-ray Fluorescence Spectroscopic monitoring is applied on the either side of air flow contact with the ribbon.

  4. 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 ...

  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. Gauge boson - Wikipedia

    en.wikipedia.org/wiki/Gauge_boson

    In particle physics, a gauge boson is a bosonic elementary particle that acts as the force carrier for elementary fermions. [1] [2] Elementary particles whose interactions are described by a gauge theory interact with each other by the exchange of gauge bosons, usually as virtual particles. Photons, W and Z bosons, and gluons are gauge

  7. Gauge group (mathematics) - Wikipedia

    en.wikipedia.org/wiki/Gauge_group_(mathematics)

    A gauge group is a group of gauge symmetries of the Yang–Mills gauge theory of principal connections on a principal bundle. Given a principal bundle P → X {\displaystyle P\to X} with a structure Lie group G {\displaystyle G} , a gauge group is defined to be a group of its vertical automorphisms, that is, its group of bundle automorphisms.

  8. 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.

  9. Micrometer (device) - Wikipedia

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

    A micrometer can be calibrated on-site anytime, at least in the most basic and important way (if not comprehensively), by measuring a high-grade gauge block and adjusting to match. Even gauges that are calibrated annually and within their expiration timeframe should be checked this way every month or two if they are used daily.