Mark Barr
Encyclopedia
Mark Barr was an American mathematician who, according to Theodore Andrea Cook, in about 1909, gave the golden ratio
the name of phi
, the first Greek letter in the name of Phidias
, the Greek sculptor who lived around 450 BC.
Golden ratio
In mathematics and the arts, two quantities are in the golden ratio if the ratio of the sum of the quantities to the larger quantity is equal to the ratio of the larger quantity to the smaller one. The golden ratio is an irrational mathematical constant, approximately 1.61803398874989...
the name of phi
Phi
Phi may refer to:In language:*Phi, the Greek letter Φ,φ, the symbol for voiceless bilabial fricativeIn mathematics:*The Golden ratio*Euler's totient function*A statistical measure of association reported with the chi-squared test...
, the first Greek letter in the name of Phidias
Phidias
Phidias or the great Pheidias , was a Greek sculptor, painter and architect, who lived in the 5th century BC, and is commonly regarded as one of the greatest of all sculptors of Classical Greece: Phidias' Statue of Zeus at Olympia was one of the Seven Wonders of the Ancient World...
, the Greek sculptor who lived around 450 BC.