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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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Magnetic trap refers to one of three types of traps used for atoms or charged particles: Magnetic mirror, a type of magnetic confinement fusion device; Magnetic trap (atoms), used to trap neutral atoms in a magnetic field gradient; Magnetic tweezers, a trap using a magnetic field to trap micrometre-seized ferromagnetic beads
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 ...
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 ...
The ship successfully carried a crew of ten plus passengers at speeds of up to 15 km/h (8.1 kn) in Kobe Harbour in June 1992. [2] [20] Small-scale ship models were later built and studied extensively in the laboratory, leading to successful comparisons between the measurements and the theoretical prediction of ship terminal speeds. [8] [9]
Powerheads are often used for spear fishing and against sharks or alligators for sport, defense, or to kill nuisance animals. The term powerhead refers to the firearm-like part of the device; when attached to a shaft to form a spear , it may be referred to as a bang stick or shark stick .