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The number π (/paɪ/; spelled out as "pi") is a mathematical constant that is the ratio of a circle's circumference to its diameter, approximately equal to 3.14159. The number π appears in many formulae across mathematics and physics. It is an irrational number, meaning that it cannot be expressed exactly as a ratio of two integers, although ...
Richard Phillips Feynman ( / ˈfaɪnmən /; May 11, 1918 – February 15, 1988) was an American theoretical physicist, known for his work in the path integral formulation of quantum mechanics, the theory of quantum electrodynamics, the physics of the superfluidity of supercooled liquid helium, as well as his work in particle physics for which he prop...
Viète. de Moivre. Euler. Fourier. v. t. e. In trigonometry, trigonometric identities are equalities that involve trigonometric functions and are true for every value of the occurring variables for which both sides of the equality are defined. Geometrically, these are identities involving certain functions of one or more angles.
Score distribution chart for sample of 905 children tested on 1916 Stanford–Binet Test IQ classification is the practice of categorizing human intelligence, as measured by intelligence quotient (IQ) tests, into categories such as "superior" or "average".[1][2][3][4] In the current IQ scoring method, an IQ score of 100 means that the test ...
Sundar Pichai. Pichai Sundararajan (born June 10, 1972 [3] [4] [5] ), better known as Sundar Pichai ( / ˈsʊndɑːr pɪˈtʃaɪ / ), is an Indian-born American business executive. [6] [7] He is the chief executive officer (CEO) of Alphabet Inc. and its subsidiary Google. [8] Pichai began his career as a materials engineer.
William, Prince of Wales (William Arthur Philip Louis; born 21 June 1982), is the heir apparent to the British throne. He is the elder son of King Charles III and Diana, Princess of Wales. William was born during the reign of his paternal grandmother, Queen Elizabeth II. He was educated at Wetherby School, Ludgrove School and Eton College. He ...
Pablo Ruiz Picasso (25 October 1881 – 8 April 1973) was a Spanish painter, sculptor, printmaker, ceramicist, and theatre designer who spent most of his adult life in France.One of the most influential artists of the 20th century, he is known for co-founding the Cubist movement, the invention of constructed sculpture, the co-invention of collage, and for the wide variety of styles that he ...
