ASTRONOMIC GEOGRAPHY - ROTATION AND TERRESTRIAL REVOLUTION
ROTATION AND TERRESTRIAL REVOLUTION "The Earth by the inclination of its axis, moving around the Sun, on the ecliptic, this is subsequently found in the intermediate points between the tropics, which mark the extreme line on which the rays fall alternately perpendicular. of the Sun, while the Arctic and Antarctic polar circles mark the extreme point where the Sun's rays arrive "(original description). Detail from table II, "Physical and astronomical description of the Earth", from "La Geografia at a glance", Lithograph Corbetta, Milan, 1853.