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Geometric illustrations by <n>Clarence Pearson Hornung</n> from his 1932 book, <n>Handbook of Designs and Devices</n>.

A page from the 1976 book <n>World of Logotypes</n>, compiled by <n>Al Cooper</n>.

<n>Spiral figures observable in crystals</n> from <n>The Philosophical Magazine</n>, 1882.

A plate of <n>Chladni figures</n> from <n>Ernst Chladni</n>'s 1787 book, <n>Entdeckungen über die Theorie des Klanges</n>.

Engraving of <n>Chladni Figures</n> (1787) by physicist <n>Ernst Chladni</n>, engraved by <n>Capieux</n>.

Illustrations of <n>Form Constants of Optical Mineralogy</n>.

<n>Chladni Figures</n>, visualizations of vibration patterns by physicist <n>Ernst Chladni</n> from 1787.

Poster for the <n>Sait Maden</n> Simgeler retrospective exhibition, 2013. Design by <n>Onur Durmuş</n>.

Designs from <n>Nguyen Gobber</n>'s book <n>Punkt, Punkt, Komma, Strich</n>, inspired by <n>Armin Hofmann</n>.

An illustration of sun symbols from <n>Henry Dreyfuss</n>'s 'Symbol Sourcebook'.

Harmonograph drawings from the book <n>Quadrivium</n>.