Gnomon: From Pharaohs to Fractals - Midhat J. Gazalé - Google Books

https://books.google.de/books?id=R0d76m-Be10C&pg=PA169

The beaver's tooth and the tiger's claw. Sunflowers and seashells. Fractals, Fibonacci sequences, and logarithmic spirals. These diverse forms of nature and mathematics are united by a common factor: all involve self-repeating shapes, or gnomons. Almost…