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Prodigi
Unwinding, Obsidian Fine Art Print
Unwinding, Obsidian Fine Art Print
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$12.99 USD
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Tie a pen to the end of a thread wound clockwise around a spool. Pull the thread taut and move the pen counterclockwise to unwind the thread. The pen traces a curve approximated by an Archimedean spiral: The distance from the pen to the center of the spool is nearly proportional to the change in angle made by the thread relative to horizontal.
Printed on museum-quality fine art print paper (200 gsm) with a textured, matte finish.Share
![Unwinding, Obsidian Fine Art Print](http://diffgeom.com/cdn/shop/products/17e5cdf6-b5ff-4c8f-b81f-8d1086b1c614.jpg?v=1695229057&width=1445)
![Unwinding, Obsidian Fine Art Print](http://diffgeom.com/cdn/shop/products/5440b908-0358-4164-aa73-c50d965f7183.jpg?v=1695229057&width=1445)
![Unwinding, Obsidian Fine Art Print](http://diffgeom.com/cdn/shop/products/7594734d-2938-4c36-9c9d-301f163b3b50.jpg?v=1695229057&width=1445)