Ancient Aztec Calendar was believed to be one of the most advanced instruments the Maya used it helped them predict many things including solar eclipese.
In Leonardo Da Vinci's Last Supper fresco, the Golden Ratio (rear wall and windows) and other relationships based on Fibonacci Numbers (foreground, table and disciple's feet) may be found in the relationship of elements in the composition.
Moleskine Writing Template by Rod Graves Template is based on a medieval page layout principle described in Robert Bringhurst’s book ‘The Elements of Typographic Style’.
An Furniture by KamKam: Modular furniture based on the ratios of standard paper sizes which can be reconfigured and/or used deconstructed as separate units.
Golden Ratio - The golden ratio is often denoted by the Greek letter phi (Φ or φ). The figure of a golden section illustrates the geometric relationship that defines this constant. The golden ratio is an irrational mathematical constant, approximately
something to give to my students to help them with composition.advanced composition :: rule of thirds, golden ratio, golden rectangle, golden triangle, golden spiral.