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  2. Birkeland current - Wikipedia

    en.wikipedia.org/wiki/Birkeland_current

    Schematic of the Birkeland or Field-Aligned Currents and the ionospheric current systems they connect to, Pedersen and Hall currents. [1]A Birkeland current (also known as field-aligned current, FAC) is a set of electrical currents that flow along geomagnetic field lines connecting the Earth's magnetosphere to the Earth's high latitude ionosphere.

  3. Kink instability - Wikipedia

    en.wikipedia.org/wiki/Kink_instability

    One of the earliest photos of the kink instability in action - the 3 by 25 cm pyrex tube at Aldermaston. A kink instability (also known as a kink oscillation or kink mode) is a current-driven plasma instability characterized by transverse displacements of a plasma column's cross-section from its center of mass without any change in the characteristics of the plasma.

  4. Ionospheric dynamo region - Wikipedia

    en.wikipedia.org/wiki/Ionospheric_dynamo_region

    In the height region between about 85 and 200 km altitude on Earth, the ionospheric plasma is electrically conducting. Atmospheric tidal winds due to differential solar heating or due to gravitational lunar forcing move the ionospheric plasma against the geomagnetic field lines thus generating electric fields and currents just like a dynamo coil moving against magnetic field lines.

  5. Dynamo theory - Wikipedia

    en.wikipedia.org/wiki/Dynamo_theory

    The current density J is itself the result of the magnetic field according to Ohm's law. Again, due to matter motion and current flow, this is not necessarily the field at the same place and time. However these relations can still be used to deduce orders of magnitude of the quantities in question.

  6. Magnetosphere particle motion - Wikipedia

    en.wikipedia.org/wiki/Magnetosphere_particle_motion

    Schematic view of the different current systems which shape the Earth's magnetosphere Trapping of plasma , e.g. of the ring current , also follows the structure of field lines. A particle interacting with this B field experiences a Lorentz Force which is responsible for many of the particle motion in the magnetosphere.

  7. Inrush current limiter - Wikipedia

    en.wikipedia.org/wiki/Inrush_current_limiter

    An inrush current limiter is a component used to limit inrush current to avoid gradual damage to components and avoid blowing fuses or tripping circuit breakers.Negative temperature coefficient (NTC) thermistors and fixed resistors are often used to limit inrush current.

  8. Magnetic sail - Wikipedia

    en.wikipedia.org/wiki/Magnetic_sail

    Magnetic sail animation. A magnetic sail is a proposed method of spacecraft propulsion where an onboard magnetic field source interacts with a plasma wind (e.g., the solar wind) to form an artificial magnetosphere (similar to Earth's magnetosphere) that acts as a sail, transferring force from the wind to the spacecraft requiring little to no propellant as detailed for each proposed magnetic ...

  9. Junction temperature - Wikipedia

    en.wikipedia.org/wiki/Junction_temperature

    Junction temperature, short for transistor junction temperature, [1] is the highest operating temperature of the actual semiconductor in an electronic device. In operation, it is higher than case temperature and the temperature of the part's exterior.

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