Golden ratio
Videos
In mathematics, two quantities are in the golden ratio if their ratio is the same as the ratio of their sum to the larger of the two quantities. Expressed algebraically, for quantities a and b
Michael Maestlin, the first to write a decimal approximation of the ratio
Dan Shechtman demonstrates quasicrystals at the NIST in 1985 using a Zometoy model.
Da Vinci's illustration of a dodecahedron from Pacioli's Divina proportione (1509)
Detail of the saucer plant, Aeonium tabuliforme, showing the multiple spiral arrangement (parastichy)
Modulor
Videos
The Modulor is an anthropometric scale of proportions devised by the Swiss-born French architect Le Corbusier.
Modulor applied in Berlin
Reverse side of the Swiss 10 CHF banknote, showing the Modulor
Le Corbusier