Electric quadrupole
= Electric quadrupole
{wiki}
An electric quadrupole is a charge distribution whose total charge and <electric dipole moment> vanish while its second charge moment does not. Its potential decays as $r^{-3}$.
= Electric quadrupole
{wiki}
An electric quadrupole is a charge distribution whose total charge and <electric dipole moment> vanish while its second charge moment does not. Its potential decays as $r^{-3}$.