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31History of Physics — History of Physics † Catholic Encyclopedia ► History of Physics The subject will be treated under the following heads: I. A Glance at Ancient Physics; II. Science and Early Christian Scholars; III. A Glance at Arabian Physics; IV.… …
32centrifugal force — an outward force on a body rotating about an axis, assumed equal and opposite to the centripetal force and postulated to account for the phenomena seen by an observer in the rotating body. [1715 25] * * * Fictitious force, peculiar to circular… …
33Ptolemaic system — Astron. a system elaborated by Ptolemy and subsequently modified by others, according to which the earth was the fixed center of the universe, with the heavenly bodies moving about it. [1765 75] * * * ▪ astronomy mathematical model of the… …
34Euler spiral — A double end Euler spiral. An Euler spiral is a curve whose curvature changes linearly with its curve length (the curvature of a circular curve is equal to the reciprocal of the radius). Euler spirals are also commonly referred to as spiros,… …
35Moons of Uranus — Uranus and its six largest moons compared at their proper relative sizes and relative positions. From left to right: Puck, Miranda, Ariel, Umbriel, Titania and Oberon Uranus, the seventh planet of the Solar System, has 27 known moons …
36Administrative district Osnabrück — The administrative district of Osnabrück lies in the southwest of the German federal state Lower SaxonyWith 2.121 km² it is as big the second largest administrative district in Lower Saxony. It incompasses 38 municipal areas, among them eight… …
37Cyclotron — For other uses, see Cyclotron (disambiguation). A modern Cyclotron for radiation therapy …
38Eglinton Country Park — is a park located in the grounds of the old Eglinton Castle estate, Irvine, on the outskirts of Kilwinning, North Ayrshire, Scotland (map reference NS 3227 4220). Eglinton Park is situated in the parish of Kilwinning, part of the former district… …
39Stupa — The Great Stupa at Sanchi, India,established by Ashoka the great (4th–1st century BC) …
40Pappus's theorem — ▪ geometry in mathematics, theorem named for the 4th century Greek geometer Pappus of Alexandria that describes the volume of a solid, obtained by revolving a plane region D about a line L not intersecting D, as the product of the area of D and… …
