WebArea is the quantity that expresses the extent of a region on the plane or on a curved surface.The area of a plane region or plane area refers to the area of a shape or planar lamina, while surface area refers to the area of an open surface or the boundary of a three-dimensional object.Area can be understood as the amount of material with a given …

WebOphiuchus (/ ˌ ɒ f i ˈ juː k ə s /) is a large constellation straddling the celestial equator.Its name comes from the Ancient Greek ὀφιοῦχος (ophioûkhos), meaning "serpent-bearer", and it is commonly represented as a man grasping a snake.The serpent is represented by the constellation Serpens.Ophiuchus was one of the 48 constellations listed by the 2nd …

WebAnaximander (/ æ ˌ n æ k s ɪ ˈ m æ n d ər /; Greek: Ἀναξίμανδρος Anaximandros; c. 610 – c. 546 BC) was a pre-Socratic Greek philosopher who lived in Miletus, a city of Ionia (in modern-day Turkey). He belonged to the Milesian school and learned the teachings of his master Thales.He succeeded Thales and became the second master of that school …

WebThis is a partial list of craters on Mars.There are hundreds of thousands of impact craters on Mars, but only some of them have names.This list here only contains named Martian craters starting with the letter A – G (see also lists for H – N and O – Z).. Large Martian craters (greater than 60 kilometers in diameter) are named after famous scientists and science …

WebThe method of exhaustion (Latin: methodus exhaustionibus; French: méthode des anciens) is a method of finding the area of a shape by inscribing inside it a sequence of polygons whose areas converge to the area of the containing shape.If the sequence is correctly constructed, the difference in area between the nth polygon and the containing …

WebXenocrates (/ z ə ˈ n ɒ k r ə ˌ t iː z /; Greek: Ξενοκράτης; c. 396/5 – 314/3 BC) of Chalcedon was a Greek philosopher, mathematician, and leader of the Platonic Academy from 339/8 to 314/3 BC. His teachings followed those of Plato, which he attempted to define more closely, often with mathematical elements.He distinguished three forms of being: the sensible, the …

WebThe Ancient Greeks developed astronomy, which they treated as a branch of mathematics, to a highly sophisticated level. The first geometrical, three-dimensional models to explain the apparent motion of the planets were developed in the 4th century BC by Eudoxus of Cnidus and Callippus of Cyzicus.Their models were based on nested homocentric …

WebIn the Hipparchian, Ptolemaic, and Copernican systems of astronomy, the epicycle (from Ancient Greek ἐπίκυκλος (epíkuklos) 'upon the circle', meaning "circle moving on another circle") was a geometric model used to explain the variations in speed and direction of the apparent motion of the Moon, Sun, and planets.In particular it explained the apparent …

WebA. Abronychus – Athenian commander and diplomat; Acacius of Caesarea – bishop of Caesarea; Acesias – physician; Acestorides – tyrant of Syracuse; Achaeus – general; Achaeus of Eretria – poet; Achermus – sculptor; Achilles Tatius – writer; Acron – physician; Acrotatus I – son of King Cleomenes of Sparta; Acrotatus II – King of Sparta, grandson of …

WebOn the Sphere and Cylinder (Greek: Περὶ σφαίρας καὶ κυλίνδρου) is a work that was published by Archimedes in two volumes c. 225 BCE. It most notably details how to find the surface area of a sphere and the volume of the contained ball and the analogous values for a cylinder, and was the first to do so.