the ratio of the circumference of a circle to its diameter

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• Measurement of a Circle — (Greek: Κύκλου μέτρησις, Kuklou metrēsis) is a treatise that consists of three propositions by Archimedes. The treatise is only a fraction of what was a longer work.[1][2] Contents 1 Propositions …   Wikipedia

• Circumference — When a circle s radius is 1 unit, its circumference is 2π units …   Wikipedia

• The Grammar of Science — is a book by Karl Pearson first published at London by Walter Scott in 1892. It was recommended by Einstein to his friends of the Olympia Academy. Several themes were covered in this book that later became part of the theories of Einstein and… …   Wikipedia

• Circle — This article is about the shape and mathematical concept. For other uses, see Circle (disambiguation). Circle illustration showing a radius, a diameter, the centre and the circumference …   Wikipedia

• Technology of the Discworld — The technology depicted in Terry Pratchett s Discworld novels takes two forms: magical and mechanical. Nearly all technology early in the series is at least partially magical, but in recent books there has been something of an industrial… …   Wikipedia

• 1706 in science — The year 1706 in science and technology involved some significant events.Mathematics* William Jones proposes using the symbol pi; (the Greek letter pi ) to represent the ratio of the circumference of a circle to its diameter. * John Machin… …   Wikipedia

• Area of a disk — Part of a series of articles on the mathematical constant π …   Wikipedia

• Approximations of π — Timeline of approximations for pi …   Wikipedia

• Aristarchus On the Sizes and Distances — Aristarchus s 3rd century BC calculations on the relative sizes of, from left, the Sun, Earth and Moon, from a 10th century CE Greek copy On the Sizes and Distances (of the Sun and Moon) (Περὶ μεγεθῶν καὶ ἀποστημάτων [ἡλίου καὶ σελήνης]) is… …   Wikipedia

• pi — pi1 /puy/, n., pl. pis. 1. the 16th letter of the Greek alphabet. 2. the consonant sound represented by this letter. 3. Math. a. the greek letter used as the symbol for the ratio of the circumference of a circle to its diameter. b. the ratio… …   Universalium

• MATHEMATICS — Bible The Bible does not deal directly with proper mathematical subjects; however there are some parts that do relate indirectly to different mathematical topics. These are widely discussed by the various commentators on the Bible and Talmud: the …   Encyclopedia of Judaism