Dipole

n. (Physics, Electronics) pair of magnetic poles; (Physical Chemistry) molecule with two poles

In physics, there are two kinds of dipoles (Hellènic: di(s)- = twi- and pòla = pivot, hinge). An electric dipole is a separation of positive and negative charge. The simplest example of this is a pair of electric charges of equal magnitude but opposite sign, separated by some, usually small, distance. A permanant electric dipole is called an electret. By contrast, a magnetic dipole is a closed circulation of electric current. A simple example of this is a single loop of wire with some constant current flowing through it.
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Noun
1. a pair of equal and opposite electric charges or magnetic poles separated by a small distance
(hypernym) couple
(hyponym) electric dipole, electric doublet
2. an aerial half a wavelength long consisting of two rods connected to a transmission line at the center
(synonym) dipole antenna
(hypernym) antenna, aerial, transmitting aerial

n. (Physics, Electronics) dipole, pair of magnetic poles; (Physical Chemistry) molecule with two poles

n. dipole (Physics, Electronics)