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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.
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.
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The fundamental basis for induced voltage in a magnetic field comes from Faraday's law describing an induced electromotive force (EMF) as follows: Emf = -N (∆Φb / ∆t) (Nave, C. R. 2011). This states that as the number of magnetic flux lines increase or decrease there is a subsequent change in induced voltage of negative or positive polarity.
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 ...
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 ...