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to deflect a magnetic needle

См. также в других словарях:

  • Earth's magnetic field — Computer simulation of the Earth s field in a normal period between reversals.[1] The tubes represent magnetic field lines, blue when the field points towards the center and yellow when away. The rotation axis of the Earth is centered and… …   Wikipedia

  • turn — vb 1 Turn, revolve, rotate, gyrate, circle, spin, twirl, whirl, wheel, eddy, swirl, pirouette can all mean to go or move or cause to go or move in a circle. Turn is a general rather colorless word implying movement in circle after circle or in a… …   New Dictionary of Synonyms

  • Arago , Dominique François Jean — (1786–1853) French physicist Born in Estagel, France, Arago was educated at the Ecole Polytechnique in Paris and then spent some years in Spain, where he accompanied Jean Baptiste Biot on a measurement of an arc of meridian. On his return to… …   Scientists

  • Ampere —     André Marie Ampère     † Catholic Encyclopedia ► André Marie Ampère     Physicist and mathematician, b. 22 January, 1775, at Lyons, France; d. at Marseilles, 10 June, 1836. His father was a prosperous and educated merchant, his mother… …   Catholic encyclopedia

  • Timeline of electromagnetism — The timeline of electromagnetism, that is the timeline of the human understanding of electromagnetic forces, dates back over two thousand years ago. It lists, within the history of electromagnetism, the associated theories, technology, and events …   Wikipedia

  • navigation — navigational, adj. /nav i gay sheuhn/, n. 1. the act or process of navigating. 2. the art or science of plotting, ascertaining, or directing the course of a ship, aircraft, or guided missile. [1520 30; < L navigation (s. of navigatio) a voyage.… …   Universalium

  • Ørsted, Hans Christian — born Aug. 14, 1777, Rudkøbing, Den. died March 9, 1851, Copenhagen Danish physicist and chemist. In 1820 he discovered that electric current in a wire can deflect a magnetized compass needle, a phenomenon that inspired the development of… …   Universalium

  • galvanometer — /gal veuh nom i teuhr/, n. an instrument for detecting the existence of small electric currents and determining their strength. [1795 1805; GALVANO + METER] * * * Instrument for measuring small electric currents by deflection of a moving coil. A… …   Universalium

  • History 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.… …   Catholic encyclopedia

  • Electrical telegraph — A printing electrical telegraph receiver, and a transmitter key at bottom right An electrical telegraph is a telegraph that uses electrical signals, usually conveyed via telecommunication lines or radio. The electromagnetic telegraph is a device… …   Wikipedia

  • Timeline of electromagnetism and classical optics — Timeline of electromagnetism and classical optics* 130 mdash; Claudius Ptolemy tabulates angles of refraction for several media * 1021 mdash; Ibn al Haytham (Alhazen) writes the Book of Optics , studying lenses, the psychology of vision, the… …   Wikipedia

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