Friction
Friction Fric"tion, n. [L. frictio, fr. fricare, frictum,to rub: cf. F. friction. See {Fray} to rub, arid cf. {Dentifrice}.] 1. The act of rubbing the surface of one body against that of another; attrition; in hygiene, the act of rubbing the body with the hand, with flannel, or with a brush etc., to excite the skin to healthy action. [1913 Webster]

2. (Mech.) The resistance which a body meets with from the surface on which it moves. It may be resistance to sliding motion, or to rolling motion. [1913 Webster]

3. A clashing between two persons or parties in opinions or work; a disagreement tending to prevent or retard progress. [1913 Webster]

{Angle of friction} (Mech.), the angle which a plane onwhich a body is lying makes with a horizontal plane,when the hody is just ready to slide dewn the plane.

Note: This angle varies for different bodies, and for planes of different materials.

{Anti-friction wheels} (Mach.), wheels turning freely on small pivots, and sustaining, at the angle formed by their circumferences, the pivot or journal of a revolving shaft, to relieve it of friction; -- called also {friction wheels}.

{Friction balls}, or

{Friction rollers}, balls or rollers placed so as to receive the pressure or weight of bodies in motion, and relieve friction, as in the hub of a bicycle wheel.

{Friction brake} (Mach.), a form of dynamometer for measuring the power a motor exerts. A clamp around the revolving shaft or fly wheel of the motor resists the motion by its friction, the work thus absorbed being ascertained by observing the force required to keep the clamp from revolving with the shaft; a Prony brake.

{Friction chocks}, brakes attached to the common standing garrison carriages of guns, so as to raise the trucks or wheels off the platform when the gun begins to recoil, and prevent its running back. --Earrow.

{Friction clutch}, {Friction coupling}, an engaging and disengaging gear for revolving shafts, pulleys, etc., acting by friction; esp.: (a) A device in which a piece on one shaft or pulley is so forcibly pressed against a piece on another shaft that the two will revolve together; as, in the illustration, the cone a on one shaft, when thrust forcibly into the corresponding hollow cone b on the other shaft, compels the shafts to rotate together, by the hold the friction of the conical surfaces gives. (b) A toothed clutch, one member of which, instead of being made fast on its shaft, is held by friction and can turn, by slipping, under excessive strain or in starting.

{Friction drop hammer}, one in which the hammer is raised for striking by the friction of revolving rollers which nip the hammer rod.

{Friction gear}. See {Frictional gearing}, under {Frictional}.

{Friction machine}, an electrical machine, generating electricity by friction.

{Friction meter}, an instrument for measuring friction, as in testing lubricants.

{Friction powder}, {Friction composition}, a composition of chlorate of potassium, antimony, sulphide, etc, which readily ignites by friction.

{Friction primer}, {Friction tube}, a tube used for firing cannon by means of the friction of a roughened wire in the friction powder or composition with which the tube is filled.

{Friction wheel} (Mach.), one of the wheels in frictional gearing. See under {Frictional}. [1913 Webster]


The Collaborative International Dictionary of English. 2000.

Synonyms:

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  • friction — [ friksjɔ̃ ] n. f. • v. 1370; lat. frictio 1 ♦ Manœuvre de massage consistant à frotter vigoureusement une partie du corps pour provoquer une révulsion ou faire absorber un produit par la peau. « une cyanose épaisse avait dépassé le genou [...]… …   Encyclopédie Universelle

  • friction — Friction. s. f. Frottement moderé qu on fait en quelque partie du corps. Legere friction. user de friction sur les espaules, sur les jambes. se servir de frictions. les frictions soulagent. les frictions dissipent l humeur & ouvrent les pores …   Dictionnaire de l'Académie française

  • friction — I noun abrasion, antagonism, antipathy, attrition, chafing, clash, clashing, collision, conflict, contention, contravention, controversy, counteraction, disaccord, disagreement, discord, disharmony, dissension, dissent, dissonance, erosion,… …   Law dictionary

  • friction — (n.) 1560s, a chafing, rubbing, from M.Fr. friction (16c.) and directly from L. frictionem (nom. frictio) a rubbing, rubbing down, noun of action from pp. stem of fricare to rub. Sense of resistance to motion is from 1722; figurative sense of… …   Etymology dictionary

  • friction — [n1] rubbing abrasion, agitation, attrition, chafing, erosion, filing, fretting, grating, grinding, irritation, massage, rasping, resistance, scraping, soreness, traction, trituration, wearing away; concept 215 friction [n2] disagreement… …   New thesaurus

  • Friction — Friction. См. Трение. (Источник: «Металлы и сплавы. Справочник.» Под редакцией Ю.П. Солнцева; НПО Профессионал , НПО Мир и семья ; Санкт Петербург, 2003 г.) …   Словарь металлургических терминов

  • Friction — (v. lat.), Reibung, der Widerstand, welchen feste Körper bei Bewegung auf od. gegen einander leisten. Sie beruht größtentheils auf der Ungleichheit der Oberfläche der Körper, indem die hervorragenden Theile des einen in die Vertiefungen des… …   Pierer's Universal-Lexikon

  • Friction — Friction, lat. deutsch, Reibung …   Herders Conversations-Lexikon

  • friction — ► NOUN 1) the resistance that one surface or object encounters when moving over another. 2) the action of one surface or object rubbing against another. 3) conflict or disagreement. DERIVATIVES frictional adjective frictionless adjective. ORIGIN… …   English terms dictionary

  • friction — [frik′shən] n. [Fr < L frictio < pp. of fricare, to rub: see FRIABLE] 1. a rubbing, esp. of one object against another 2. disagreement or conflict because of differences of opinion, temperament, etc. 3. Mech. the resistance to motion of two …   English World dictionary

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