conchoid of Nicomedes

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• Nicomedes (mathematician) — Conchoids of line with common center. Nicomedes (Νικομήδης; ca. 280 BC – ca. 210 BC) was an ancient Greek mathematician. Contents 1 Life and work …   Wikipedia

• Conchoid (mathematics) — Conchoids of line with common center. The fixed point O is the red dot, the black line is the given curve, and each pair of coloured curves is length d from the intersection with the line that a ray through O makes. In the blue case d is greater… …   Wikipedia

• Nicomedes — may refer to: Nicomedes (mathematician), ancient Greek mathematician who discovered the conchoid Nicomedes, uncle of the 19th Agiad Spartan king Pleistoanax, commanded the Spartan army at the Battle of Tanagra Saint Nicomedes, Martyr of unknown… …   Wikipedia

• Conchoid — can refer to: Conchoid curve, an equation discovered by the mathematician Nicomedes Conchoidal fracture, a breakage pattern characteristic to certain glasses and crystals This disambiguation page lists articles associated with the same title. If… …   Wikipedia

• Conchoid — Con choid, n. [Gr. ?; ? shell + e i^dos form: cf. F. concho[ i]de.] (Geom.) A curve, of the fourth degree, first made use of by the Greek geometer, Nicomedes, who invented it for the purpose of trisecting an angle and duplicating the cube. [1913… …   The Collaborative International Dictionary of English

• Concoide de Nicomedes — La concoide de Nicomedes es la concoide de la recta, llamada base . Se pondrá la base perpendicular al eje polar, a una distancia b del polo y el radio de la circunferencia será h. Entonces, la ecuación de la concoide de Nicomedes es que, en… …   Wikipedia Español

• Curve — For other uses, see Curve (disambiguation). A parabola, a simple example of a curve In mathematics, a curve (also called a curved line in older texts) is, generally speaking, an object similar to a line but which is not required to be straight.… …   Wikipedia

• Doubling the cube — (also known as the Delian problem) is one of the three most famous geometric problems unsolvable by compass and straightedge construction. It was known to the Egyptians, Greeks, and Indians.[1] To double the cube means to be given a cube of some… …   Wikipedia

• Angle trisection — The problem of trisecting the angle is a classic problem of compass and straightedge constructions of ancient Greek mathematics.Two tools are allowed # An un marked straightedge, and # a compass, Problem: construct an angle one third a given… …   Wikipedia

• Pappus of Alexandria — (Greek polytonic|Πάππος ὁ Ἀλεξανδρεύς) (c. 290 ndash; c. 350) was one of the last great Greek mathematicians of antiquity, known for his Synagoge or Collection (c. 340), and for Pappus s Theorem in projective geometry. Nothing is known of his… …   Wikipedia

• Trisectrix — In geometry, a trisectrix is a curve which can be used to trisect an arbitrary angle. Such a method falls outside those allowed by compass and straightedge constructions, so they do not contradict the well known theorem which states that an… …   Wikipedia