trigonometrical calculations

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• Indian astronomy — the earliest textual mention of which is given in the religious literature of India (2nd millennium BCE) became an established tradition by the 1st millennium BCE, when IAST|Jyotiṣa Vedānga and other ancillary branches of learning called Vedangas …   Wikipedia

• Napier, John — born 1550, Merchiston Castle, near Edinburgh, Scot. died April 4, 1617, Merchiston Castle Scottish mathematician and champion of Protestantism. He divided his life between attacks on the church of Rome and the pursuit of numerical calculations.… …   Universalium

• Zij — Zīj (Arabic: زيج) is the generic name applied to Arabic astronomical books that tabulate parameters used for astronomical calculations of the positions of the Sun, Moon, stars, and planets. The name is derived from the Middle Persian term zih or… …   Wikipedia

• Logarithm — The graph of the logarithm to base 2 crosses the x axis (horizontal axis) at 1 and passes through the points with coordinates (2, 1), (4, 2), and (8, 3) …   Wikipedia

• optics — /op tiks/, n. (used with a sing. v.) the branch of physical science that deals with the properties and phenomena of both visible and invisible light and with vision. [1605 15; < ML optica < Gk optiká, n. use of neut. pl. of OPTIKÓS; see OPTIC,… …   Universalium

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• trigonometry — trigonometric /trig euh neuh me trik/, trigonometrical, adj. trigonometrically, adv. /trig euh nom i tree/, n. the branch of mathematics that deals with the relations between the sides and angles of plane or spherical triangles, and the… …   Universalium

• Градусные измерения — Градусным измерением называется измерение дуги на земной поверхности, имеющее целью найти фигуру и размеры обитаемой нами планеты. Каждое градусное измерение состоит из двух существенно различных действий: из определении линейной длины какой либо …   Энциклопедический словарь Ф.А. Брокгауза и И.А. Ефрона

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• History of geometry — Geometry (Greek γεωμετρία ; geo = earth, metria = measure) arose as the field of knowledge dealing with spatial relationships. Geometry was one of the two fields of pre modern mathematics, the other being the study of numbers. Classic geometry… …   Wikipedia