For Eratosthenes shows that the perpendicular distance from the highest mountain tops to the lowest regions is ten stades [c.5,000-5,500 feet]. This he shows with the help of dioptras which measure magnitudes at a distance. Eratosthenes
For Eratosthenes shows that the perpendicular distance from the highest mountain tops to the lowest regions is ten stades [c.5,000-5,500 feet]. This he shows with the help of dioptras which measure magnitudes at a distance.
Two magnitudes whether commensurable or incommensurable, balance at distances reciprocally proportional to the magnitudes. Archimedes
Two magnitudes whether commensurable or incommensurable, balance at distances reciprocally proportional to the magnitudes.
