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  2. Via fence - Wikipedia

    en.wikipedia.org/wiki/Via_fence

    Via fences are used to shield microstrip and stripline transmission lines, guard edges of printed circuit boards, shield functional circuit units from each other, and to form the walls of waveguides integrated into a planar format. Via fences are cheap and easy to implement, but use up board space and are not as effective as solid metal walls.

  3. Magnetic switchable device - Wikipedia

    en.wikipedia.org/wiki/Magnetic_switchable_device

    A switchable magnetic device usually consists of a magnetic circuit with permanent magnets. By moving some parts of this circuit, the magnetic flux can be directed within the device (off position) or externally (on position). [3] One type of magnetic switchable device is made from two blocks of iron, with a round cavity bored through the center.

  4. Magnetix - Wikipedia

    en.wikipedia.org/wiki/Magnetix

    Magnetix 'Translucents' 1 Piece Set. Magnetix is a magnetic construction toy that combines plastic building pieces containing embedded neodymium magnets, and steel bearing balls that can be connected to form geometric shapes and structures.

  5. Substrate-integrated waveguide - Wikipedia

    en.wikipedia.org/wiki/Substrate-integrated_waveguide

    A substrate-integrated waveguide (SIW) (also known as post-wall waveguide or laminated waveguide) is a synthetic rectangular electromagnetic waveguide formed in a dielectric substrate by densely arraying metallized posts or via holes that connect the upper and lower metal plates of the substrate.

  6. Domain wall (magnetism) - Wikipedia

    en.wikipedia.org/wiki/Domain_wall_(magnetism)

    In magnetism, a domain wall is an interface separating magnetic domains. It is a transition between different magnetic moments and usually undergoes an angular displacement of 90° or 180°. A domain wall is a gradual reorientation of individual moments across a finite distance. The domain wall thickness depends on the anisotropy of the ...

  7. MRI RF shielding - Wikipedia

    en.wikipedia.org/wiki/MRI_RF_shielding

    MRI RF shielding. RF shielding for MRI rooms is necessary to prevent noise of radio frequency from entering into the MRI scanner and distorting the image. The three main types of shielding used for MRIs are copper, steel, and aluminum.

  8. Domain wall - Wikipedia

    en.wikipedia.org/wiki/Domain_wall

    A domain wall is the boundary between two neighboring domains. Thus a domain wall is extended in two spatial dimensions and one time dimension. Important examples are: Domain wall (magnetism), an interface separating magnetic domains; Domain wall (optics), for domain walls in optics; Domain wall (string theory), a theoretical 2-dimensional ...

  9. Magnetic amplifier - Wikipedia

    en.wikipedia.org/wiki/Magnetic_amplifier

    The magnetic amplifier (colloquially known as a "mag amp") is an electromagnetic device for amplifying electrical signals. The magnetic amplifier was invented early in the 20th century, and was used as an alternative to vacuum tube amplifiers where robustness and high current capacity were required.