De Arhitectura, 1521
Vitruvius is famous for asserting in his book “De architectura” that a structure must exhibit the three qualities of firmitas, utilitas, venustas – that is, it must be solid, useful, beautiful. These are sometimes termed the Vitruvian virtues or the Vitruvian Triad.
L’Uomo Vitruviano, 1940
Drawn around 1940 by Leonardo DaVinci and based on the previous works of the architect Vitruvius.
The image demonstrates the proportions of human body-parts to the hole body, blending mathematical measurings from art and architecture. The drawing represents the symmetry of the human body and that of the universe.
The Phi Mask
Dr. Stephen R. Marquardt of the Loma Linda University and the University of Southern California claims it represents the ideal facial archetype.
Human arm and foot
The length of the hand is at the golden ratio of the forearm. Also, the proportion of the arch of the foot in relation to the foot’s entire length or the base of the toe line and the big toe are golden ratios.
When making a fist, the index finger’s articulations mark points located on the golden spiral.
The ratio of the middle finger to the length of the entire hand and to the proportion of the little finger is golden ratio.
The two front incisor teeth form a golden ratio, as also the first with the second and the second with the third. The proportion of the length of the smile and the position of the third tooth and that of the height of the teeth and of the upper lip are golden ratios.
The center of the irises form a golden ratio with the center of the mouth and the tip of the nose with that of the head.