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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



... that she had certainly come of age again since she first passed that landmark in life's journey. Her finely chiseled, clean-cut face, with something red Indian about the firm mouth and strongly marked cheek bones, showed even at that distance traces of the friction of the passing years. And yet she was very handsome. Her features were as firm in repose as those of a Greek bust, and her great dark eyes were arched over by two brows so black, so thick, and so delicately ...
— Beyond the City • Arthur Conan Doyle
... bits having been cut off, the beads are now rolled in fine sand, which has been carefully heated in earthen jars, until just warm enough to soften the outside of the glass, so that a gentle friction would rub off the sharp edges. The sand gets into the holes in the beads, prevents them from closing up during this process, and ere we can believe it possible, they come forth round, perfect, and complete. The larger and smaller ...
— Little Folks (July 1884) - A Magazine for the Young • Various
... leather coat with grease. It's a splendid coat. It has saved me from catching cold. My sheepskin is a capital thing, too: it serves me as a coat and a mattress, both. One is as warm in it as on a stove. It's wretched without pillows. Hay does not take the place of them, and with the continual friction there's a lot of dust from it which tickles one's face and prevents one from dozing. I haven't a single sheet. That's horrid too. And I ought to have taken some more trousers. The more luggage one has the better—there's less ...
— Letters of Anton Chekhov • Anton Chekhov
... proposed. I value what comes from you too much, not to remind you of it. Your favor by Mr. Garnett also, came during my absence. I presume he has left Paris, as I can hear nothing of him. I have lost the opportunity, therefore, of seeing his method of resisting friction, as well as of showing, by attentions to him, respect for yourself and your recommendations. Mr. Paine (Common Sense) is here on his way to England. He has brought the model of an iron bridge, with which he supposes a single arch of four hundred feet, may be made. It has not yet arrived in Paris. ...
— The Writings of Thomas Jefferson - Library Edition - Vol. 6 (of 20) • Thomas Jefferson
... voted in as President, and we felt we began our new duties under the most promising auspices. But, alas, in two years there was so much friction between the council and the Ministry that we all resigned in a body, except Mrs. Colton (who was in England) and Mrs. Farr. We were fighting the battle of the unpaid boards, and we were so strong in the public estimation ...
— An Autobiography • Catherine Helen Spence


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