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  2. Powerhead (pump) - Wikipedia

    en.wikipedia.org/wiki/Powerhead_(pump)

    An aquarium powerhead is typically used to create flow throughout the tank. For example, a single powerhead could be used at one end of a freshwater aquarium to simulate a laminar river current, or multiple powerheads can be positioned throughout the aquarium to create more turbulent flow.

  3. Powerhead - Wikipedia

    en.wikipedia.org/wiki/Powerhead

    Powerhead (aquarium), a submersible aquarium pump; Powerhead (rocket engine), the preburners and turbopumps of a pump-fed rocket engine (excludes the engine combustion chamber and nozzle) Powerhead (pump), the mechanical drive of any one of several non-aquarium pump types; marine propeller powerhead, fountain powerhead, etc.

  4. Powerhead(aquarium) - Wikipedia

    en.wikipedia.org/wiki/Powerhead(aquarium)

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  5. Magnetic water treatment - Wikipedia

    en.wikipedia.org/wiki/Magnetic_water_treatment

    A 1996 study by Lawrence Livermore National Laboratory found no significant effect of magnetic water treatment on the formation of scale. As magnets affect water to a small degree, and water containing ions is more conductive than purer water, magnetic water treatment is an example of a valid scientific hypothesis that failed experimental ...

  6. Penning–Malmberg trap - Wikipedia

    en.wikipedia.org/wiki/Penning–Malmberg_trap

    The Penning–Malmberg trap (PM trap), named after Frans Penning and John Malmberg, is an electromagnetic device used to confine large numbers of charged particles of a single sign of charge. Much interest in Penning–Malmberg (PM) traps arises from the fact that if the density of particles is large and the temperature is low, the gas will ...

  7. Magnetic shark repellent - Wikipedia

    en.wikipedia.org/wiki/Magnetic_shark_repellent

    When a shark swims through the Earth's magnetic field, electromagnetic induction – a phenomenon which generates voltage in an electrical conductor moving through a magnetic field – creates an electric field around the shark. Minute differences in the Earth's magnetic field at different locations result in minute differences in the induced ...

  8. Penning trap - Wikipedia

    en.wikipedia.org/wiki/Penning_trap

    A Penning trap is a device for the storage of charged particles using a homogeneous magnetic field and a quadrupole electric field. It is mostly found in the physical sciences and related fields of study for precision measurements of properties of ions and stable subatomic particles , like for example mass, [ 1 ] fission yields and isomeric ...

  9. Magneto-optical trap - Wikipedia

    en.wikipedia.org/wiki/Magneto-optical_trap

    Magnetic trapping is created by adding a spatially varying magnetic quadrupole field to the red detuned optical field needed for laser cooling. This causes a Zeeman shift in the magnetic-sensitive m f levels, which increases with the radial distance from the center of the trap. Because of this, as an atom moves away from the center of the trap ...