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Gnomonic projection
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==History== The gnomonic [[Map projection|projection]] is said to be the oldest map projection, speculatively attributed to [[Thales]] who may have used it for star maps in the 6th century BC.{{r|Snyder}} The path of the shadow-tip or light-spot in a [[sundial#Nodus-based sundials|nodus-based sundial]] traces out the same [[hyperbola]]e formed by parallels on a gnomonic map.
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