Meridian; Pole; Earth's axis; Sky's axis; Motion; Méridien; Pôle; Axe de la Terre; Axe du Ciel; Mouvement
Abstract :
[en] According to the author, the astronomers must report their observations and their formulae to the pole and to geographical meridian. His demonstration consists in considering as fixed the three mobile Earth's axis and as mobile the three Sky's axis, to which we report the motion of the first one. [fr] Selon l’auteur, les astronomes doivent rapporter leurs observations et leurs formules au pôle et au méridien géographique. Sa démonstration consiste à regarder comme fixes les trois axes mobiles de la Terre, et comme mobiles les trois axes fixes du Ciel, auquel on rapporte le mouvement des premiers.