Recent measurements of the oblateness of the Sun have been used to determine its quadrupole moment and thus its ... the surface is not one of constant potential.

The spectroscopic quadrupole moment measures how much a nucleus deviates ... ingredient in the theoretical interpretation." "Another potential route forward is to improve our understanding of ...

In this figure, the electric dipole moment is represented by a positive charge (red dot) and a negative charge (blue dot) that are spatially separated. The quadrupole, made up of two opposing ...