The golden ratio
mary14ap
Created on June 23, 2017
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Transcript
THE GOLDEN RATIO
THE DIVINE PROPORTION APPLIED TO JEWEL MAKING
- A lab at the Bijou museum in Casalmaggiore
- Erasmus Plus with Portugal and Poland
Golden Ratio phi The golden ratio (its symbol is the Greek letter "phi" shown leFT IN YELLOW) is a special number approximately equal to 1,618It appears many times in geometry, art, architecture and other areas.
A ratio is nothing more than a relationship between two quantities. For example, a building that is 100 feet wide and 50 feet tall has a ratio between its width and its height of 2:1 (100:50 = 2:1).
Video here
The Golden Ratio in Nature
Often found in nature in the shape of a leaf or the spiral of a shell, the golden mean is thought to add harmonious composition to buildings and other structures.
The golden spiral is a patchwork made up of quarter circles
The golden rectangle can be easily obtained starting from a square
the erasmus students have designed jewels applying the divine proportion to various geometrical shapes: lines, circles,trangles, rectangles.