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Friction   /frˈɪkʃən/   Listen
noun
Friction  n.  
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.
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.
3.
A clashing between two persons or parties in opinions or work; a disagreement tending to prevent or retard progress.
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.
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.





Collaborative International Dictionary of English 0.48


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"Friction" Quotes from Famous Books



... about the world by land and sea, as I have been for the last year, is enough to turn one's brain into a curiosity shop. When I undertake to pick out of the pile of rubbish some picture that must have been originally worth a great deal of money, I find it so disfigured by the sheer force of friction that it looks no better than an old daub. The pity of it is, too, that the very best of my gatherings are apt to get lost or ruined; and sometimes it happens that when I varnish up what appears to be valuable it turns out not a groat. Want of method would ruin a Zingalee gipsy or a Bedouin Arab. ...
— The Land of Thor • J. Ross Browne
... dear, to sit on that stone. Brings on white fluxions. Never have little baby then less he was big strong fight his way up through. Might get piles myself. Sticks too like a summer cold, sore on the mouth. Cut with grass or paper worst. Friction of the position. Like to be that rock she sat on. O sweet little, you don't know how nice you looked. I begin to like them at that age. Green apples. Grab at all that offer. Suppose it's the only ...
— Ulysses • James Joyce
... long protracted, cost England L5,000,000. But that bitter strike was all needless. These are the men who take off the chariot wheels for God's advancing hosts. When one comes to the front who has skill in allaying friction, all society begins a new forward march. Skill in personal carriage has much to do ...
— A Man's Value to Society - Studies in Self Culture and Character • Newell Dwight Hillis
... requisite to employ in a generator is a pressure sufficient (a) to lift the gasholder bell, or to raise the water in a displacement holder, (b) to drive the gas through the various subsidiary items in the plant, such as washers and purifiers, (c) to overcome the friction in the service-pipes, [Footnote: This friction manifestly causes a loss of pressure, i.e., a fall in pressure, as a gas travels along a pipe; and, as will be shown in Chapter VII., it is the fall in pressure in a pipe rather than the initial pressure at which ...
— Acetylene, The Principles Of Its Generation And Use • F. H. Leeds and W. J. Atkinson Butterfield
... clothes in which civilized man incases himself, would cast a backward eye into the dim and misty past, and see the priest of some of the old Pagan gods soaking the scrotum in hot water, and then gradually rubbing the testicles within, by gentle but firm friction, to make the testicles disappear, a process by which many of the heathen priests prepared themselves for the discharge of their sacerdotal duties and the strict observance of those rules of chastity and celibacy which they were henceforth to live up to, they would find one explanation of ...
— History of Circumcision from the Earliest Times to the Present - Moral and Physical Reasons for its Performance • Peter Charles Remondino


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