==Electric quadrupole {Anchor|electric quadrupole}== ==Magnetic quadrupole== All known magnetic sources give dipole fields. However, to make a magnetic quadrupole it is possible to place four identical bar magnets perpendicular to each other such that the north pole of one is next to the south of the other. Such a configuration cancels the dipole ...
Found on
http://en.wikipedia.org/wiki/Quadrupole
(from the article `magnetic resonance`) For certain nuclei, the NMR spectrum reveals the existence of nuclear electric quadrupole moments (an electric quadrupole consists of a charge ... ...there is no parity change, the transition is magnetic dipole (M1) and is analogous to the radiation of a full-wave loop antenna. With two units of ....
Found on
http://www.britannica.com/eb/a-z/q/3
a "double dipole"; a molecule with a quadrupole will have no dipole moment because the two dipoles present in the molecule cancel each other out. A good example is carbon dioxide.
Found on
http://www.chemistry-dictionary.com/definition/quadrupole.php
No exact match found.
