An electromagnetic pump is a pump that moves liquid metal (or any electrically conductive liquid) using electromagnetism. A magnetic field is set at right angles to the direction the liquid moves in, and a current is passed through it. This causes an electromagnetic force that moves the liquid. Applications include pumping liquid metal through a c...
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http://en.wikipedia.org/wiki/Electromagnetic_pump
(from the article `pump`) These can be used only to pump fluids that are good electrical conductors. The pipe carrying the fluid is placed in a magnetic field and a current ...
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http://www.britannica.com/eb/a-z/e/19
a device that causes an electrically conducting fluid to flow by means of electromagnetic induction.
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https://www.infoplease.com/dictionary/electromagnetic-pump
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