The Greek mathematician and astronomer Eratosthenes (275-195 B.C.) used a comparison among shadows to evaluate the Earth's circumference. Eratosthenes recognizes that to the working day of your sum mer solstice at noon the Sunshine will be reflected at The underside of a certain perfectly in Siene (modern Assuan in Egypt). https://kingslists.com/story10276432/what-does-etwas-grobartiges-mean