
Measure the circumference of the Earth with a stick: the history and experiment of Eratostene
There Earth has a well -known form to date, that of a geoidthat is, a solid similar to one Bitterzoluta sphere. When we try to represent it in a mappamondo, however, we should draw it as an ellipissoid, that is, a huge three -dimensional oval with an equatorial circumference of 40,075 km and polar circumference of 39,942 km. These dimensions ...







