force, line of

      in physics, path followed by an electric charge free to move in an electric field or a mass free to move in a gravitational field, or generally any appropriate test particle in a given force field. More abstractly, lines of force are lines in any such force field the tangent of which at any point gives the field direction at that point and the density of which gives the magnitude of the field. The concept of lines of force was introduced into physics in the 1830s by the English scientist Michael Faraday (Faraday, Michael), who considered magnetic and electric effects in the region around a magnet or electric charge as a property of the region rather than an effect taking place at a distance from a cause.

      The electric lines of force that represent the field of a positive electric charge in space consist of a family of straight lines radiating uniformly in all directions from the charge where they originate. A second positive charge placed in the field would travel radially away from the first charge.

      In the case of a magnetic field, since no isolated unit pole has ever been discovered, the field lines are called lines of force only in the sense that a small magnet is forced to align itself in the direction of these field lines. An electric charge traveling along a magnetic field line undergoes no magnetic force.

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Universalium. 2010.

Look at other dictionaries:

  • force line — jėgų linija statusas T sritis Standartizacija ir metrologija apibrėžtis Jėgos lauke išvesta kreivė, kurios liestinė kiekviename taške sutampa su jėgos vektoriaus kryptimi. atitikmenys: angl. force line vok. Feldstärkelinie, f; Kraftlinie, f rus.… …   Penkiakalbis aiškinamasis metrologijos terminų žodynas

  • force line — jėgų linija statusas T sritis fizika atitikmenys: angl. force line vok. Kraftlinie, f rus. силовая линия, f pranc. ligne de force, f …   Fizikos terminų žodynas

  • force line — jėgų linija statusas T sritis chemija apibrėžtis Jėgos lauke išvesta kreivė, kurios liestinė kiekviename taške sutampa su jėgos kryptimi. atitikmenys: angl. force line rus. силовая линия …   Chemijos terminų aiškinamasis žodynas

  • field force line — lauko jėgų linija statusas T sritis radioelektronika atitikmenys: angl. field force line vok. Feldstärkelinie, f rus. силовая линия поля, f pranc. ligne de force de champ, f …   Radioelektronikos terminų žodynas

  • magnetic force line — magnetinė jėgų linija statusas T sritis radioelektronika atitikmenys: angl. magnetic force line vok. magnetische Kraftlinie, f rus. магнитная силовая линия, f pranc. ligne de force magnétique, f …   Radioelektronikos terminų žodynas

  • line of action of the force — jėgos veikimo linija statusas T sritis fizika atitikmenys: angl. line of action of the force; line of application of the force vok. Angriffslinie, f; Wirkungslinie, f rus. линия действия силы, f; линия приложения силы, f pranc. ligne d’action de… …   Fizikos terminų žodynas

  • line of application of the force — jėgos veikimo linija statusas T sritis fizika atitikmenys: angl. line of action of the force; line of application of the force vok. Angriffslinie, f; Wirkungslinie, f rus. линия действия силы, f; линия приложения силы, f pranc. ligne d’action de… …   Fizikos terminų žodynas

  • Force concentration — is the practice of concentrating a military force, so as to bring to bear such overwhelming force against a portion of an enemy force that the disparity between the two forces alone acts as a force multiplier, in favour of the concentrated forces …   Wikipedia

  • LINE (combat system) — LINE Combat System Also known as Linear Infighting Neural Override Engagement, 7 Deadly Moves of Combat philosophy Focus Hybrid Country of origin United States …   Wikipedia

  • Force Dynamics — is a semantic category that describes the way in which entities interact with reference to force. Force Dynamics gained a good deal of attention in cognitive linguistics due to its claims of psychological plausibility and the elegance with which… …   Wikipedia

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