... and the dynamical Love number k 2 d from the analysis of laser ranging to LAGEOS 1 and LAGEOS 2 . ... The adopted theoretical value of the so-called dynamical Love number k 2 d (a scale factor of near-diurnal oscillations aroused by the Earth's fluid core in the coefficients c 2 1 , s 2 1 of the geopotential) is improved applying a simple close form of these oscillations expressed in terms of the differential angular velocities 1 , 2 of the fluid core. ...