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rubbing

rubbing

rubbing Sentence Examples

  • Jessi was rubbing her face, distraught.

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  • Finally he leaned forward and stood, rubbing the back of his neck.

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  • He opened the door, rubbing his eyes.

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  • They were fully dressed and he was merely rubbing her back.

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  • She sipped it, rubbing the back of her neck.

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  • He took Deidre's arm and pulled her against him, rubbing his hips against her backside.

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  • He took Deidre's arm and pulled her against him, rubbing his hips against her backside.

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  • Dean muttered rubbing his eyes.

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  • Rubbing her eyes, she tried to rein in her scattered thoughts.

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  • She will be quite ill now, said Prince Andrew, as he entered the study, rubbing his small white hands.

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  • Rostov, rubbing his eyes that seemed glued together, raised his disheveled head from the hot pillow.

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  • "You'll go to jail for this," Fitzgerald muttered rubbing his cheek.

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  • He sat on the bed, rubbing his forehead as she continued, I know she lied, but you did too.

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  • If 127 parts of iodine, which is an almost black solid, and loo parts of mercury, which is a white liquid metal, be intimately mixed by rubbing them together in a mortar, the two substances wholly disappear, and we obtain instead a brilliant red powder quite unlike the iodine or the mercury; almost the only property that is unchanged is the weight.

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  • Each movable web must pass the other without coming in contact with it or the fixed wire, and without rubbing on any part of the brasswork.

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  • For example, does the heat generated by friction vary as the friction and the time during which it acts, or is it proportional to the friction and the distance through which the rubbing bodies are displaced - that is, to the work done against friction - or does it involve any other conditions?

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  • He sat on the bed, rubbing his forehead as she continued, I know she lied, but you did too.

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  • She swung by him, oblivious that she was rubbing her ample chest against him in the passing.

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  • He held his face in his hands, rubbing his eyes, trying to make sense of something that defied all logic.

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  • She sat up, rubbing the sleep from her eyes.

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  • Claire was all over him, in his space, rubbing her breasts against him.

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  • "Good point," Fred said, rubbing his chin like a Chinese scholar.

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  • "Good point," Fred said, rubbing his chin like a Chinese scholar.

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  • She sat on a couch inside the gold lacquered bathroom, rubbing her face.

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  • Fred awoke, rubbing his eyes.

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  • "Oh, she said, rubbing the sleep from her eyes, "I thought Mrs. Shipton was back."

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  • "Seems like talking to Donnie might be a tad productive," Fred said, rubbing his chin like Charlie Chan.

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  • Elisabeth stood behind the sofa, rubbing Jackson's shoulders and neck.

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  • She held him, rubbing his back.

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  • Jackson sat rubbing his jaw wondering what the hell just happened.

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  • Rubbing the sleep from her eyes, Carmen trudged across the room and drew the curtains back from her window.

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  • She hit the ground like a sack of grain and scrambled away from him, gasping for air and rubbing her neck.

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  • She had even been guilty of rubbing the DNA test in his face — solid proof that the baby girl was his.

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  • "If you don't want to die here, you better find us a way to escape!" she hissed at the demon, rubbing her chest.

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  • He was rubbing the back of his neck, watching her with concern.

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  • About the same time Davy showed that two pieces of ice could be melted by rubbing them together in a vacuum, although everything surrounding them was at a temperature below the freezing point.

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  • The close agreement between the results at least indicates that "the amount of heat produced by friction is proportional to the work done and independent of the nature of the rubbing surfaces."

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  • The diaphragm was itself used as the rubbing surface, and it was either mounted and rotated or the fingers were moved over it.

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  • Many beetles make a hissing or chirping sound by rubbing a "scraper," formed by a sharp edge or prominence on some part of their exoskeleton, over a "file" formed by a number of fine ridges situate on an adjacent region.

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  • The summer pruning of established wall or espalier-rail trees consists chiefly in the timely displacing, shortening back, or rubbing off of the superfluous shoots, so that the winter pruning, in horizontal training, is little more than adjusting the leading shoots and thinning out the spurs, which should be kept close to the wall and allowed to retain but two or at most three buds.

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  • A sublimate may be formed of: sulphur - reddish-brown drops, cooling to a yellow to brown solid, from sulphides or mixtures; iodine - violet vapour, black sublimate, from iodides, iodic acid, or mixtures; mercury and its compounds - metallic mercury forms minute globules, mercuric sulphide is black and becomes red on rubbing, mercuric chloride fuses before subliming, mercurous chloride does not fuse, mercuric iodide gives a yellow sublimate; arsenic and its compounds - metallic arsenic gives a grey mirror, arsenious oxide forms white shining crystals, arsenic sulphides give reddish-yellow sublimates which turn yellow on cooling; antimony oxide fuses and gives a yellow acicular sublimate; lead chloride forms a white sublimate after long and intense heating.

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  • If, however, the precipitate refuses to settle, it is directly transferred to the filter paper, the last traces being removed by washing and rubbing the sides of the vessel with a piece of rubber, and the liquid is allowed to drain through.

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  • 4, except the lowest b, are carefully removed by rubbing them off with the FIG.

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  • The best method of application is by rubbing in a small quantity of the aconitine ointment until numbness is felt, but the costliness of this preparation causes the use of the aconite liniment to be commonly resorted to.

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  • This smooth surface is then brilliantly polished by the aid of friction with a rubbing tool covered with a soft substance like leather or felt and fed with a polishing material, such as rouge.

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  • A few strokes of such a rubber are sufficient to produce a decidedly " polished " appearance, but prolonged rubbing under considerable pressure and the use of a polishing paste of a proper consistency are required in order to remove the last trace of pitting from the surface.

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  • In temples of the best class the floor of the gallery and of the central portion of the main building from entrance to altar are richly lacquered; in those of inferior class they are merely polished by continued rubbing.

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  • Numerous operations of luting, sizing, lacquering, polishing, drying, rubbing down, and so on, are performed by the nurimono-shi, until, after many days treatment, the object emerges with a smooth, lustrelike dark-grey or colored surface, and is ready to pass into the hands of the makie-shi, or decorator.

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  • The sign of the electrification imparted to the electroscope when so charged - that is, whether positive or negative - can be determined by rubbing the sealing-wax rod with flannel and the glass rod with silk, and approaching them gently to the electroscope one at a time.

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  • At present we are where we were in electrical science, when Newton produced curious sparks while rubbing glass with paper.

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  • The most primitive is the rubbing together of the concentrated crushings with mercury in iron mortars.

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  • The slime is cleaned out fortnightly or monthly, the zinc turnings being cleaned by rubbing and the supernatant liquor allowed to settle in the precipitating boxes or in separate vessels.

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  • To promote smoothness of action, the rubbing surfaces are lubricated.

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  • The general theory of this kind of brake is as follows: - Let F be the whole frictional resistance, r the common radius of the rubbing surfaces, W the force which holds the brake from turning and whose line of action is at a perpendicular distance R from the axis of the shaft, N the revolutions of the shaft per minute, co its angular velocity in radians per second; then, assuming that the adjustments are made so that the engine runs steadily at a uniform speed, and that the brake is held still, clear of the stops and without oscillation, by W, the torque T exerted by the engine is equal to the frictional torque Fr acting at the brake surfaces, and this is measured by the statical moment of the weight W about the axis of revolution; that is T =Fr=WR...

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  • The maintenance of the conditions of steadiness implied in equation (I) depends upon the constancy of F, and therefore of the coefficient of friction µ between the rubbing surfaces.

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  • The molecules of the two surface-layers will exert forces upon one another, so that, when the rubbing takes place, each layer will set the molecules of the other into motion, and the energy of rubbing will be used in establishing this heat-motion.

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  • At first the heat-motion will be confined to molecules near the rubbing surfaces of the two bodies, but, as already explained, these will in time set the interior molecules into motion, so that ultimately the heat-motion will become spread throughout the whole mass.

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  • 39, middle and rubbing it lengthwise FIG with a bit of cloth powdered with resin, till the rod gives a distinct note; the vibrations are communicated to the plate, which consequently vibrates transversely, and causes the sand to heap itself into one or more concentric rings.

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  • This peculiar little inhabitant of the steppes and desert regions of Turkestan and Persia, by rubbing the imbricating scales upon each other, produces a shrill cricket-like noise, whilst sitting at night in front of its hole in the ground.

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  • the regulation as to ablution by rubbing with sand, where water cannot be obtained (iv.

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  • Ammonium Permanganate, NH 4 Mn0 4, explodes violently on rubbing, and its aqueous solution decomposes on boiling (W.

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  • Thus, plucking and rubbing the ears of corn was counted a form of reaping and threshing.

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  • The projecting rods of bronze were then cut away, and the whole finished by rubbing down and polishing over any roughness or defective places.

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  • Unguents.The most important kind of resistance in machines is the friction or rubbing resistance of surfaces which slide over each other.

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  • Its magnitude is the product of the normal pressure or force which presses the rubbing surfaces together in~ a direction perpendicular to themselves into a specific constant already mentioned in 14, as the coefficient of friction, which depends on the nature and condition of the surfaces of the unguent, if any, with which they are covered.

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  • The total pressure exerted between the rubbing surfaces is the resultant of the normal pressure and of the friction, and its obliquity, or inclination to the common perpendicular of the surfaces, is the angle of repose formerly mentioned in 14, whose tangent is the coefficient of friction.

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  • Moment of Friction.The work performed in a unit of time in overcoming the friction of a pair of surfaces is the product of the friction by the velocity of sliding of the surfaces over each other, if that is the same throughout the whole extent of the rubbing surfaces.

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  • If that velocity is different for different portions of the rubbing surfaces, the velocity of each portion is to be multiplied by the friction of that portion, and the results summed or integrated.

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  • When the relative motion of the rubbing surfaces is one of rotation, the work of friction in a unit of time, for a portion of the rubbing surfaces at a given distance from the axis of rotation, may be found by multiplying together the friction of that portion, its distance from the axis, and the angular velocity.

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  • The total moment of friction of a pair of rotating rubbing surfaces is the sum or integral of the moments of friction of their several portions.

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  • To express this symbolically, let dii represent the area of a portion of a pair of rubbing surfaces at a distance r from the axis of their relative rotation; p the intensity of the normal pressure at du per unit of area; and f the coefficient of friction.

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  • The flat pivot is a cylinder of steel having a plane circular end as a rubbing surface.

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  • Let N be the total pressure sustained by a flat pivot of the radius r; if that pressure be uniformly distributed, which is the case when the rubbing surfaces of the pivot and its step are both true planes, the intensity of the pressure is pN/irr2 (60)

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  • It appears that the rapidity with which a x rubbing surface wears away is proportional to Fio.

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  • This curve, bein~ an asymptote to its axis, is capable of being indefinitely proloi~ged towards X; but in designing pivots it should stop before the angle PTY becomes less than the angle of repose of the rubbing surfaces, otherwise the pivot will be liable to stick in its bearing.

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  • To find the distance s through which a brake, exerting the friction F, must rub in order to stop a machine having the total actual energy E at the moment when the brake begins to act, reduce, by the principles of 96, the various efforts and other resistances of the machine which act at the same time with the friction of the brake to the rubbing surface of the brake, and let R be their resultantpositive if resistance, negative if effort preponderates.

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  • Its duplex character, and the fact that the electricity produced by rubbing glass and vitreous substances was different from that produced by rubbing sealing-wax and resinous substances, seemed to necessitate the assumption of two kinds of electric fluid; hence there arose the conception of positive and negative electricity, and the two-fluid theory came into existence.

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  • Sometimes the patient is put to bed and the circulation is encouraged, especially on the surface of the body, by the use of hot spirits and water, or opium and ipecacuanha, while the outside of the nose is protected to a certain extent from loss of heat, and consequent irritation, by smearing it with a tallow candle or rubbing some ointment over the skin.

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  • The irritation of the conjunctiva caused by dust leads to winking of the eyelids, lachrymation and rubbing, which tend to remove it; but after the dust has been removed violent rubbing tends rather to keep up the irritation; and sometimes, if the particle of dust remains under the eyelid and is sharp and angular, the process of rubbing may cause it to injure the conjunctiva much more than if it were left alone.

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  • In the same way itching is often caused by the presence of insects or other irritants upon the skin, and it tends reflexly to cause rubbing, which is useful by removing the irritant.

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  • In the treatment of stiffened joints, massage under water is very serviceable, and in the so-called Aix douche a nozzle from which water continuously streams is fastened to the wrist of the masseur, so that a current of water is constantly playing upon the joint which he is rubbing.

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  • The cakes are liable to become mildewed, and require constant turning and occasional rubbing in dry " poppy trash " to remove the mildew, and strengthening in weak places with fresh poppy leaves.

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  • The revolving band forms the cathode, and at one end makes a rubbing contact with a travelling belt placed at an angle so that the crystals of silver detached thereby from the cathode are conveyed by it from the solution and deposited outside.

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  • " When the antlers are freed from the velvet - a process usually assisted by the animal rubbing them against tree stems or boughs - they have a more or less rugose surface, owing to the grooves formed in them by the nutrient blood-vessels.

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  • oindre, to anoint), the act of pouring, or rubbing oil, ointment or salve over or on to a person or object.

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  • Among the sedimentary rocks we have, for example, in the clay slates of the Silurian formations, rocks no less cracked and fissured than others, but generally quite impermeable by reason of the joints being packed with the very fine clay resulting from the rubbing of slate upon slate in the earth movements to which the cracks are due.

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  • He desired all France to set to work as he did with a contented air and rubbing his hands for joy; but neither Colbert general theories nor individual happiness preoccupied 7~ustiy.

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  • Yet the fact that the long, soft Conchoderma auritum stands exposed on the Coronula, sometimes ten on one, indicates that the whale can have little chance of evicting its tenants, even at the expense of rubbing off the eighteen flattened horns of its own skin embedded in cavities round the domed base of the Coronula shell.

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  • To recapitulate the doctrine more succinctly, men originally said, in Sanskrit (or some Aryan speech more ancient still), "fire is got by rubbing or boring;" nothing could have been more scientific and straightforward.

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  • Finally he leaned forward and stood, rubbing the back of his neck.

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  • After he left the room, Tammy came in, rubbing her eyes.

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  • She sat up, rubbing the sleep from her eyes.

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  • "No," he said, rubbing the blood off with a handful of sand.

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  • He opened the door, rubbing his eyes.

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  • Across the room, Darian shifted closer to the battle, one hand rubbing the back of his head.

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  • He was a saint through and through for rubbing her back instead of seducing her.

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  • Claire was all over him, in his space, rubbing her breasts against him.

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  • Rhyn released her and locked the door behind him then paced, rubbing his jaw.

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  • I must have leaned up against the barbeque! he said, rubbing the grease in.

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  • "You'll go to jail for this," Fitzgerald muttered rubbing his cheek.

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  • Dean muttered rubbing his eyes.

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  • Alex replaced the receiver and leaned forward in his chair, rubbing his face as if to remove the conversation.

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  • Gabe watched him, rubbing his rough jaw.

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  • She sipped it, rubbing the back of her neck.

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  • She sat on a couch inside the gold lacquered bathroom, rubbing her face.

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  • Fred awoke, rubbing his eyes.

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  • "Oh, she said, rubbing the sleep from her eyes, "I thought Mrs. Shipton was back."

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  • "Seems like talking to Donnie might be a tad productive," Fred said, rubbing his chin like Charlie Chan.

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  • She swung by him, oblivious that she was rubbing her ample chest against him in the passing.

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  • He held his face in his hands, rubbing his eyes, trying to make sense of something that defied all logic.

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  • Elisabeth stood behind the sofa, rubbing Jackson's shoulders and neck.

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  • She held him, rubbing his back.

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  • Jackson sat rubbing his jaw wondering what the hell just happened.

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  • Rubbing the sleep from her eyes, Carmen trudged across the room and drew the curtains back from her window.

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  • They were fully dressed and he was merely rubbing her back.

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  • She hit the ground like a sack of grain and scrambled away from him, gasping for air and rubbing her neck.

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  • Kiki was quiet for a moment.  Kris sighed and sat down, rubbing his face.  His body had not yet healed from the beating Jade gave him.

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  • He had awakened a few moments before the usual time, ordinarily a good sign, but after rubbing open his eyes, he discovered it was a white day, hazy and sultry, without a speck of blue in the sky.

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  • She had even been guilty of rubbing the DNA test in his face — solid proof that the baby girl was his.

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  • "If you don't want to die here, you better find us a way to escape!" she hissed at the demon, rubbing her chest.

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  • There was no point rubbing his nose in it.

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  • He was rubbing the back of his neck, watching her with concern.

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  • His head snapped up and he winced, rubbing his neck.

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  • Jessi was rubbing her face, distraught.

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  • Rubbing her eyes, she tried to rein in her scattered thoughts.

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  • abrade the surface using a dry sandpaper, rubbing in the direction of the grain.

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  • This pecking, combined with feather loss from rubbing against the cage bars, can result in almost totally bald birds.

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  • bevel rubbing.

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  • Diagram 13.2 The rubbing bevel 13.5 The first cut The first cut is the easiest one.

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  • boobyting ladies boobies right by gently rubbing himself against them.

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  • brass rubbing at round church is no more.

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  • cloth moistened with rubbing alcohol.

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  • Is a dubious increase in reading comprehension worth rubbing the nation's primary school teachers the wrong way?

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  • To remedy dandruff try rubbing lemon juice or a strong infusion of sage or rosemary into the scalp and roots.

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  • dissentious rogue that, rubbing the poor itch of your opinion, make yourselves scabs?

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  • eggshell finishes, in addition, will require wet rubbing down to provide a key for the new paint.

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  • You can also try rubbing your baby's gums with your finger or applying a small amount teething gel.

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  • gleeful rubbing of the hands.

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  • hardback copy with very light rubbing of the boards Price: 15.00 GBP Add to Shopping Cart 69.

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  • The slithery reptile has been rubbing shoulders, quite literally, with legendary snake-charming hell-raiser, Alice Cooper.

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  • Target plants are mechanically inoculated by rubbing leaves or by dipping tomato roots into diluted inoculum.

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  • Celtic lore says rubbing primrose flowers over your eyelids can gie you a way into the fairy word.

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  • millstone grit seem to be rubbing stones or whet stones.

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  • The jacket has a few small areas of rubbing and one tiny nick.

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  • purred softly, rubbing her back against the girl's hand.

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  • rash vests are used underneath a suit to prevent rubbing of the neoprene against the skin which can cause chaffing in joint areas.

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  • For example, chicken is flavored by rubbing it with juice obtained from squeezing fresh ginger rhizome.

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  • rubbing salt into them to preserve them prior to hanging up from hooks in the box room.

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  • rubbing strakes on the outside of the hull to climb up.

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  • rubbing ointment into the nipple to ward off soreness.

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  • rubbing of every brass in the county.

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  • Make sure you sit far enough away from the pulley, to prevent the cable rubbing against your right leg.

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  • Keep affected skin areas clean and dry, but avoid excessive rubbing.

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  • However, a hand on his back kept rubbing in circles, soothing him.

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  • Box has all internal packing pieces, the board is good very slight rubbing around the edges.

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  • These include " gem " panning, fossil casting and fossil rubbing.

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  • A very good hardback copy with very light rubbing of the boards Price: 15.00 GBP Add to Shopping Cart 69.

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  • Wear on the ' body ' of the whistle suggests regular use and constant rubbing when worn against skin.

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  • rubbing strake.

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  • rubbing shoulders with the rich and famous.

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  • rubbing strips means lots of scrapes potentially.

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  • rubbing alcohol on swab to remove oils from cork area.. .

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  • rubbing stones and others may have been used as pot boilers.

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  • rubbing post.

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  • Gouge A cutting tool with a ' U ' shaped cross-section used with the bevel rubbing.

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  • Sadly brass rubbing at round church is no more.

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  • A near fine hardback copy with the lightest of edge rubbing of the dustjacket Price: 18.00 GBP Add to Shopping Cart 83.

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  • side rubbing Hamsters will sometimes rub their sides against areas of their cage in order to mark their territory.

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  • To prepare wood, lightly abrade the surface using a dry sandpaper, rubbing in the direction of the grain.

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  • There is some light rubbing to the silver sequins but no damage.

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  • Tiny flakes can stick to fingers so avoid rubbing the eyes or exposing sensitive skin when handling the material and wash hands thoroughly afterward.

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  • slink about like an alley cat, rubbing himself up against people.

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  • Others used the rubbing strakes on the outside of the hull to climb up.

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  • The original PVC topsides ' skirt ' was refitted, with a new rubbing strake.

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  • Face painting, donkey rides, Tudor brass rubbing workshop, traditional fairground rides, coconut shy, tombola and hook the duck.

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  • Since last Friday's events, the anti-agreement unionists have been rubbing their hands in glee.

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  • rash vests are used underneath a suit to prevent rubbing of the neoprene against the skin which can cause chaffing in joint areas.

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  • If 127 parts of iodine, which is an almost black solid, and loo parts of mercury, which is a white liquid metal, be intimately mixed by rubbing them together in a mortar, the two substances wholly disappear, and we obtain instead a brilliant red powder quite unlike the iodine or the mercury; almost the only property that is unchanged is the weight.

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  • Each movable web must pass the other without coming in contact with it or the fixed wire, and without rubbing on any part of the brasswork.

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  • p their corners pared off by rubbing against each other; and two species of matter thus arise, - one consisting of small globules which continue their circular motion with a (centrifugal) tendency to fly off from the centre as they swing round the axis of rotation, while the other, consisting of the fine dust--the filings and parings of the original particles - gradually becoming finer and finer, and losing its velocity, tends (centripetally) to accumulate in the centre of the vortex, which has been gradually left free by the receding particles of globular matter.

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  • About the same time Davy showed that two pieces of ice could be melted by rubbing them together in a vacuum, although everything surrounding them was at a temperature below the freezing point.

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  • For example, does the heat generated by friction vary as the friction and the time during which it acts, or is it proportional to the friction and the distance through which the rubbing bodies are displaced - that is, to the work done against friction - or does it involve any other conditions?

    0
    0
  • The close agreement between the results at least indicates that "the amount of heat produced by friction is proportional to the work done and independent of the nature of the rubbing surfaces."

    0
    0
  • The diaphragm was itself used as the rubbing surface, and it was either mounted and rotated or the fingers were moved over it.

    0
    0
  • Many beetles make a hissing or chirping sound by rubbing a "scraper," formed by a sharp edge or prominence on some part of their exoskeleton, over a "file" formed by a number of fine ridges situate on an adjacent region.

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    0
  • The summer pruning of established wall or espalier-rail trees consists chiefly in the timely displacing, shortening back, or rubbing off of the superfluous shoots, so that the winter pruning, in horizontal training, is little more than adjusting the leading shoots and thinning out the spurs, which should be kept close to the wall and allowed to retain but two or at most three buds.

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    0
  • A sublimate may be formed of: sulphur - reddish-brown drops, cooling to a yellow to brown solid, from sulphides or mixtures; iodine - violet vapour, black sublimate, from iodides, iodic acid, or mixtures; mercury and its compounds - metallic mercury forms minute globules, mercuric sulphide is black and becomes red on rubbing, mercuric chloride fuses before subliming, mercurous chloride does not fuse, mercuric iodide gives a yellow sublimate; arsenic and its compounds - metallic arsenic gives a grey mirror, arsenious oxide forms white shining crystals, arsenic sulphides give reddish-yellow sublimates which turn yellow on cooling; antimony oxide fuses and gives a yellow acicular sublimate; lead chloride forms a white sublimate after long and intense heating.

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  • If, however, the precipitate refuses to settle, it is directly transferred to the filter paper, the last traces being removed by washing and rubbing the sides of the vessel with a piece of rubber, and the liquid is allowed to drain through.

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    0
  • 4, except the lowest b, are carefully removed by rubbing them off with the FIG.

    0
    0
  • The best method of application is by rubbing in a small quantity of the aconitine ointment until numbness is felt, but the costliness of this preparation causes the use of the aconite liniment to be commonly resorted to.

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  • The split cylinder is passed to the flattening furnace, where it is exposed to a red heat, sufficient to soften the glass; when soft the cylinder is laid upon a smooth flat slab and flattened down upon it by the careful application of pressure with some form of rubbing implement, which frequently takes the form of a block of charred wood.

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  • This smooth surface is then brilliantly polished by the aid of friction with a rubbing tool covered with a soft substance like leather or felt and fed with a polishing material, such as rouge.

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  • A few strokes of such a rubber are sufficient to produce a decidedly " polished " appearance, but prolonged rubbing under considerable pressure and the use of a polishing paste of a proper consistency are required in order to remove the last trace of pitting from the surface.

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  • In temples of the best class the floor of the gallery and of the central portion of the main building from entrance to altar are richly lacquered; in those of inferior class they are merely polished by continued rubbing.

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  • Numerous operations of luting, sizing, lacquering, polishing, drying, rubbing down, and so on, are performed by the nurimono-shi, until, after many days treatment, the object emerges with a smooth, lustrelike dark-grey or colored surface, and is ready to pass into the hands of the makie-shi, or decorator.

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  • The sign of the electrification imparted to the electroscope when so charged - that is, whether positive or negative - can be determined by rubbing the sealing-wax rod with flannel and the glass rod with silk, and approaching them gently to the electroscope one at a time.

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  • At present we are where we were in electrical science, when Newton produced curious sparks while rubbing glass with paper.

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  • The most primitive is the rubbing together of the concentrated crushings with mercury in iron mortars.

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  • The slime is cleaned out fortnightly or monthly, the zinc turnings being cleaned by rubbing and the supernatant liquor allowed to settle in the precipitating boxes or in separate vessels.

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  • To promote smoothness of action, the rubbing surfaces are lubricated.

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  • The general theory of this kind of brake is as follows: - Let F be the whole frictional resistance, r the common radius of the rubbing surfaces, W the force which holds the brake from turning and whose line of action is at a perpendicular distance R from the axis of the shaft, N the revolutions of the shaft per minute, co its angular velocity in radians per second; then, assuming that the adjustments are made so that the engine runs steadily at a uniform speed, and that the brake is held still, clear of the stops and without oscillation, by W, the torque T exerted by the engine is equal to the frictional torque Fr acting at the brake surfaces, and this is measured by the statical moment of the weight W about the axis of revolution; that is T =Fr=WR...

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  • The maintenance of the conditions of steadiness implied in equation (I) depends upon the constancy of F, and therefore of the coefficient of friction µ between the rubbing surfaces.

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  • xi.) the resistance is obtained by turning a cast iron disk against the frictional resistance of two thin copper plates, which are held in a casing free to turn upon the shaft, and are so arranged that the pressure between the rubbing surfaces is controlled, and the heat developed by friction carried away, by the regulated flow of water through the casing.

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  • The molecules of the two surface-layers will exert forces upon one another, so that, when the rubbing takes place, each layer will set the molecules of the other into motion, and the energy of rubbing will be used in establishing this heat-motion.

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  • At first the heat-motion will be confined to molecules near the rubbing surfaces of the two bodies, but, as already explained, these will in time set the interior molecules into motion, so that ultimately the heat-motion will become spread throughout the whole mass.

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  • 39, middle and rubbing it lengthwise FIG with a bit of cloth powdered with resin, till the rod gives a distinct note; the vibrations are communicated to the plate, which consequently vibrates transversely, and causes the sand to heap itself into one or more concentric rings.

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  • This peculiar little inhabitant of the steppes and desert regions of Turkestan and Persia, by rubbing the imbricating scales upon each other, produces a shrill cricket-like noise, whilst sitting at night in front of its hole in the ground.

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  • ab, off, and radere, to scrape), the process of rubbing off or wearing down, as of rock by moving ice, or of coins by wear and tear; also used of the results of such a process as an abrasion or excoriation of the skin.

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  • the regulation as to ablution by rubbing with sand, where water cannot be obtained (iv.

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  • Ammonium Permanganate, NH 4 Mn0 4, explodes violently on rubbing, and its aqueous solution decomposes on boiling (W.

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  • Thus, plucking and rubbing the ears of corn was counted a form of reaping and threshing.

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  • The projecting rods of bronze were then cut away, and the whole finished by rubbing down and polishing over any roughness or defective places.

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  • They are skilful with the bow and in throwing stones, and they can easily kindle a fire, even in the wet season, by rubbing together two pieces of dry bamboo.

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  • Unguents.The most important kind of resistance in machines is the friction or rubbing resistance of surfaces which slide over each other.

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  • Its magnitude is the product of the normal pressure or force which presses the rubbing surfaces together in~ a direction perpendicular to themselves into a specific constant already mentioned in 14, as the coefficient of friction, which depends on the nature and condition of the surfaces of the unguent, if any, with which they are covered.

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  • The total pressure exerted between the rubbing surfaces is the resultant of the normal pressure and of the friction, and its obliquity, or inclination to the common perpendicular of the surfaces, is the angle of repose formerly mentioned in 14, whose tangent is the coefficient of friction.

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  • Moment of Friction.The work performed in a unit of time in overcoming the friction of a pair of surfaces is the product of the friction by the velocity of sliding of the surfaces over each other, if that is the same throughout the whole extent of the rubbing surfaces.

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  • If that velocity is different for different portions of the rubbing surfaces, the velocity of each portion is to be multiplied by the friction of that portion, and the results summed or integrated.

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  • When the relative motion of the rubbing surfaces is one of rotation, the work of friction in a unit of time, for a portion of the rubbing surfaces at a given distance from the axis of rotation, may be found by multiplying together the friction of that portion, its distance from the axis, and the angular velocity.

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  • The total moment of friction of a pair of rotating rubbing surfaces is the sum or integral of the moments of friction of their several portions.

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  • To express this symbolically, let dii represent the area of a portion of a pair of rubbing surfaces at a distance r from the axis of their relative rotation; p the intensity of the normal pressure at du per unit of area; and f the coefficient of friction.

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  • The flat pivot is a cylinder of steel having a plane circular end as a rubbing surface.

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  • Let N be the total pressure sustained by a flat pivot of the radius r; if that pressure be uniformly distributed, which is the case when the rubbing surfaces of the pivot and its step are both true planes, the intensity of the pressure is pN/irr2 (60)

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  • It appears that the rapidity with which a x rubbing surface wears away is proportional to Fio.

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  • This curve, bein~ an asymptote to its axis, is capable of being indefinitely proloi~ged towards X; but in designing pivots it should stop before the angle PTY becomes less than the angle of repose of the rubbing surfaces, otherwise the pivot will be liable to stick in its bearing.

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  • To find the distance s through which a brake, exerting the friction F, must rub in order to stop a machine having the total actual energy E at the moment when the brake begins to act, reduce, by the principles of 96, the various efforts and other resistances of the machine which act at the same time with the friction of the brake to the rubbing surface of the brake, and let R be their resultantpositive if resistance, negative if effort preponderates.

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  • Its duplex character, and the fact that the electricity produced by rubbing glass and vitreous substances was different from that produced by rubbing sealing-wax and resinous substances, seemed to necessitate the assumption of two kinds of electric fluid; hence there arose the conception of positive and negative electricity, and the two-fluid theory came into existence.

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  • Sometimes the patient is put to bed and the circulation is encouraged, especially on the surface of the body, by the use of hot spirits and water, or opium and ipecacuanha, while the outside of the nose is protected to a certain extent from loss of heat, and consequent irritation, by smearing it with a tallow candle or rubbing some ointment over the skin.

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  • The irritation of the conjunctiva caused by dust leads to winking of the eyelids, lachrymation and rubbing, which tend to remove it; but after the dust has been removed violent rubbing tends rather to keep up the irritation; and sometimes, if the particle of dust remains under the eyelid and is sharp and angular, the process of rubbing may cause it to injure the conjunctiva much more than if it were left alone.

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  • In the same way itching is often caused by the presence of insects or other irritants upon the skin, and it tends reflexly to cause rubbing, which is useful by removing the irritant.

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  • In the treatment of stiffened joints, massage under water is very serviceable, and in the so-called Aix douche a nozzle from which water continuously streams is fastened to the wrist of the masseur, so that a current of water is constantly playing upon the joint which he is rubbing.

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  • The cakes are liable to become mildewed, and require constant turning and occasional rubbing in dry " poppy trash " to remove the mildew, and strengthening in weak places with fresh poppy leaves.

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  • The revolving band forms the cathode, and at one end makes a rubbing contact with a travelling belt placed at an angle so that the crystals of silver detached thereby from the cathode are conveyed by it from the solution and deposited outside.

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  • " When the antlers are freed from the velvet - a process usually assisted by the animal rubbing them against tree stems or boughs - they have a more or less rugose surface, owing to the grooves formed in them by the nutrient blood-vessels.

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  • oindre, to anoint), the act of pouring, or rubbing oil, ointment or salve over or on to a person or object.

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  • Among the sedimentary rocks we have, for example, in the clay slates of the Silurian formations, rocks no less cracked and fissured than others, but generally quite impermeable by reason of the joints being packed with the very fine clay resulting from the rubbing of slate upon slate in the earth movements to which the cracks are due.

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  • He desired all France to set to work as he did with a contented air and rubbing his hands for joy; but neither Colbert general theories nor individual happiness preoccupied 7~ustiy.

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  • Yet the fact that the long, soft Conchoderma auritum stands exposed on the Coronula, sometimes ten on one, indicates that the whale can have little chance of evicting its tenants, even at the expense of rubbing off the eighteen flattened horns of its own skin embedded in cavities round the domed base of the Coronula shell.

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  • To recapitulate the doctrine more succinctly, men originally said, in Sanskrit (or some Aryan speech more ancient still), "fire is got by rubbing or boring;" nothing could have been more scientific and straightforward.

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  • "That's the way I feel about it," remarked Zeb, rubbing his wounds.

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  • Jim accepted it as a mere detail, and at his command the attendants gave his coat a good rubbing, combed his mane and tail, and washed his hoofs and fetlocks.

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  • On the fourth morning, the high priest, by rubbing dry wood together, produces new fire in the public square, from whence every habitation in the town is supplied with the new and pure flame.

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  • A young forest growing up under your meadows, and wild sumachs and blackberry vines breaking through into your cellar; sturdy pitch pines rubbing and creaking against the shingles for want of room, their roots reaching quite under the house.

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  • "Yes, yes, of course," interrupted Prince Vasili impatiently, rubbing his bald head and angrily pulling back toward him the little table that he had pushed away.

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  • (an officer nicknamed "the rat") he said, rubbing his forehead and whole face with both hands.

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  • Telyanin was sitting in the same indolent pose in which Rostov had left him, rubbing his small white hands.

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  • The midwife was already on her way to meet her, rubbing her small, plump white hands with an air of calm importance.

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  • Another borzoi, a dog, catching sight of his master from the garden path, arched his back and, rushing headlong toward the porch with lifted tail, began rubbing himself against his legs.

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  • "Go on, harder, go on!" he muttered to the valet who was rubbing him, slightly twitching and grunting.

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  • He went along the whole length of this passage to the stairs and, frowning and rubbing his forehead with both hands, went down as far as the first landing.

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