Golden ratio. Line segments in the golden ratio 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. The figure on the right illustrates the geometric relationship. Expressed algebraically, for quantities a and b with a > b > 0, The golden ratio is also called the golden section (Latin: sectio aurea) or golden mean.[1][2][3] Other names include extreme and mean ratio,[4] medial section, divine proportion, divine section (Latin: sectio divina), golden proportion, golden cut,[5] and golden number.[6][7][8] Some twentieth-century artists and architects, including Le Corbusier and Dalí, have proportioned their works to approximate the golden ratio—especially in the form of the golden rectangle, in which the ratio of the longer side to the shorter is the golden ratio—believing this proportion to be aesthetically pleasing (see Applications and observations below).
Calculation Therefore, Multiplying by φ gives and History. 125 Amazing Space Facts You Should Know About Space, Universe, Planets, Solar System, Galaxy, Astronomy and Stars. Humor in Therapy: Using it Effectively and Responsibly. Black Annis. Black Annis, also known as Black Agnes, is a bogeyman figure in English folklore. She is imagined as a blue-faced crone or witch with iron claws and a taste for humans (especially children).[1] She is said to haunt the countryside of Leicestershire, living in a cave in the Dane Hills, with an oak tree at its entrance.[2] She supposedly goes out onto the glens at night looking for unsuspecting children and lambs to eat, then tanning their skins by hanging them on a tree, before wearing them around her waist.[2] She would reach inside houses to snatch people. Legend has it that she used her iron claws to dig into the side of a sandstone cliff, making herself a home there which is known as Black Annis's Bower.
The legend led to parents warning their children that Black Annis would catch them if they did not behave.[2] Origins[edit] In popular culture[edit] A boogeyman creature, quite similar to Black Annis, is mentioned in the stealth-action game "Thief: Deadly Shadows". References[edit] Brain Facts: 24 Facts about The Brain you didn't know. Interesting Gravity Facts - Acceleration, G-Force, Mass, Formula, Law, Orbit. 20 Interesting and Useful Water Facts. ISA MYP3 research (Do not copy these folders but add your links)