1,451,962 views
The official channel of the France 3 show. C'est pas sorcier, the magazine of discovery and science. Why were the movements of the Sun used to draw the first maps of the world? How did Eratosthenes manage to calculate the size of the Earth? How do you represent a sphere on a map? How do surveyors transcribe the shots taken in the field onto a map? To talk to us about cartography, Fred went to the National Library, where all the maps published since the beginning of the 19th century are kept. He also followed the surveyors of the IGN who, on foot or by plane, draw up the maps of our country in the smallest details.