Mécanique Céleste, Volumen 2

1+ay angle attracted point axis becomes brevity canal centre of gravity centrifugal force co-ordinates coefficient computed constant quantity corresponding cos.² deduced degree density difference distance divided earth ellipticity equal equilibrium errors evident expression factor figure fluid formula function gives hence homogeneous homogeneous functions independent infinitely integral relative internal point latitude limits manner mass means meridian multiplied nearly neglecting terms observing obtain order a² oscillations parallel partial differentials particle perpendicular PESQ plane positive preceding value produce radius represented revolution rotatory motion satisfy second member semi-axis sign of integration sphere spheroid stratum Substituting the values suppose surface syzygies tang terms depending theorem tide unity vanish variable quantities αμ µ² µ³