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  2. Gouy balance - Wikipedia

    en.wikipedia.org/wiki/Gouy_balance

    Schematic diagram of Gouy balance. The Gouy balance, invented by the French physicist Louis Georges Gouy, is a device for measuring the magnetic susceptibility of a sample. . The Gouy balance operates on magnetic torque, by placing the sample on a horizontal arm or beam suspended by a thin fiber, and placing either a permanent magnet or electromagnet on the other end of the arm, there is a ...

  3. Evans balance - Wikipedia

    en.wikipedia.org/wiki/Evans_balance

    An Evans balance, also known as a Johnson Matthey magnetic susceptibility balance, is a scientific instrument used to measure the magnetic susceptibility of solids and liquids. [ 1 ] [ 2 ] Magnetic susceptibility quantifies the extent to which a material becomes magnetized in an applied magnetic field .

  4. Faraday balance - Wikipedia

    en.wikipedia.org/wiki/Faraday_balance

    A Faraday balance is a device used to measure magnetic susceptibility, a property of matter is related to the force experienced by a substance in a magnetic field. Various practical devices are available for the measurement of susceptibility, with differences in the shape of the field and the way the force is measured. [1] In the Faraday ...

  5. Analytical balance - Wikipedia

    en.wikipedia.org/wiki/Analytical_balance

    An analytical balance (or chemical balance) is a class of balance designed to measure small mass in the sub-milligram range. The measuring pan of an analytical balance (0.1 mg resolution or better) is inside a transparent enclosure with doors so that dust does not collect and so any air currents in the room do not affect the balance's operation ...

  6. Ampere balance - Wikipedia

    en.wikipedia.org/wiki/Ampere_balance

    A more complicated version of an ampere balance, that removes this source of inaccuracy by a calibration step, is the Kibble balance, [1] invented by Bryan Kibble in 1975. This experimental device was developed at government metrology laboratories worldwide with the goal of providing a more accurate definition of the kilogram , the world's ...

  7. Force between magnets - Wikipedia

    en.wikipedia.org/wiki/Force_between_magnets

    More precisely, the term magnetic moment normally refers to a system's magnetic dipole moment, which produces the first term in the multipole expansion [note 1] of a general magnetic field. Both the torque and force exerted on a magnet by an external magnetic field are proportional to that magnet's magnetic moment.

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