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	Podcast:		Is All About Math (Video Podcast)
	Episode:		Dimension 2
	Category:		Education
	Duration:		00:15:24
	Publish Date:		2008-06-24 21:41:00
	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?
	Total Play:		0