💙💜❤️ BI? PI! ❤️💜💙

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Specimens of Fancy Turning

Public Domain Review covered this 19th century book of some pretty great spirograph images.

Mel Bochner, Untitled (“Child’s Play!”: ‘Study for 7-Part Progression’), (pen and black ink on off-white wove paper), 1966 [Art Institute Chicago, Chicago, IL. © Mel Bochner]

Agnes Denes. Isometric Systems in Isotropic Space: The Pyramid, 1976

A matemática é tão romântica!!!

Toyota Matrix (matrix)

WAVES — Visualizing sound through cymatics and resonant frequencies | Phenomena - from ABC Science

Uncovering the geometric nature of soundwaves. This is visualized by directing sound waves through water and salt. The water rests in an upright facing speaker, and the salt rests on a high frequency mechanical wave driver. When the devices are activated with specific frequencies, the water and salt particles vibrate in synchronization with the soundwaves, forming incredible geometric patterns. Phenomena fuses art and science together to explore naturally occurring patterns, and the fundamental forces of nature that create them, to take us on an ambitious, innovative, and psychedelic journey through the fabric of the universe. Filmmaker Josef Gatti recreates nine ‘phenomena’ to produce mesmerizing art films, which are then paired with an original music score by Kim Moyes from Australian dance music duo The Presets. #PhenomenaTV

Uma cidade perfeita para os exercícios de matemática!

Satellite map of Missoula, Montana

Inscribed in a grid of 2n-by-2n cells is a circle with diameter 2n - 1. How many cells include a segment of the circle?

The count grows simply as 8n - 4. How would you show that?