Notes about things to do/things done are green
Golden Section -
Also called Golden Mean, Golden Proportion, Divine Section etc. Mathematical calculation to do with ratios which is used in many ways - thought to be aesthetically pleasing. Geometrical anaylsis of classical and ancient buildings/monuments show that they fit the GS. Used in size of canvases and composition of paintings. Find out more and need to read a book about types of composition as my knowledge is lacking in this area.