Dimension 2
author: Étienne Ghys,
National Center for Scientific Research (CNRS)
author: Aurélien Alvarez, École Normale Supérieure de Lyon
author: Jos Leys
published: March 15, 2010, recorded: June 2008, views: 3516
author: Aurélien Alvarez, École Normale Supérieure de Lyon
author: Jos Leys
published: March 15, 2010, recorded: June 2008, views: 3516
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Description
Hipparchus explains how two numbers can describe the position of a point on a sphere. He then explains stereographic projection: how can one draw a picture of the Earth on a piece of paper?
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