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Vocabulary Word

Word: friction

Definition: clash or conflict in opinion; rubbing against


Sentences Containing 'friction'

Phosphorus can unite with oxygen at a fairly low temperature, and if phosphorus is rubbed against a rough surface, the friction produced will raise the temperature of the phosphorus to a point where it can combine with oxygen.
If you want to convince yourself that friction produces heat, rub a cent vigorously against your coat and note that the cent becomes warm.
Many destructive fires have been started by the accidental friction of such matches against rough surfaces.
The red phosphorus is not only harmless, but it is difficult to ignite, and, in order to be ignited by friction, must be rubbed on a surface rich in oxygen.
In our study of machines we omitted a factor which in practical cases can not be ignored, namely, friction.
This extra force, which must be supplied if friction is to be counteracted, is in reality waste work.
If the force required by a machine is 150 pounds, while that calculated as necessary is 100 pounds, the loss due to friction is 50 pounds, and the machine, instead of being thoroughly efficient, is only two thirds efficient.
Machinists make every effort to eliminate from a machine the waste due to friction, leveling and grinding to the most perfect smoothness and adjustment every part of the machine.
When the machine is in use, friction may be further reduced by the use of lubricating oil.
Friction can never be totally eliminated, however, and machines of even the finest construction lose by friction some of their efficiency, while poorly constructed ones lose by friction as much as one half of their efficiency.
This is because water, in flowing from place to place, expends force in overcoming the friction of the pipes and the resistance of the air.
During this long journey, considerable force is expended against friction, and hence the flow at a distance from the reservoir falls to but a fraction of its original strength.
We are accustomed to say that a wire offers resistance to the flow of a current; that is, whenever a current meets resistance, heat is produced in much the same way as when mechanical motion meets an obstacle and spends its energy in friction.
All machines have their friction; and possibly this does enough good to counterbalance the evil.
But when the friction comes to have its machine, and oppression and robbery are organized, I say, let us not have such a machine any longer.
If the injustice is part of the necessary friction of the machine of government, let it go, let it go; perchance it will wear smooth certainly the machine will wear out.
Let your life be a counter friction to stop the machine.
A few drops of the rum restored suspended animation, while the friction of his limbs restored their elasticity.
For instance, there must be a limit to the fleetness of any terrestrial animal, as this will be determined by the friction to be overcome, the weight of the body to be carried, and the power of contraction in the muscular fibres.
She rubs everything that can be rubbed, until it shines, like her own honest forehead, with perpetual friction.
Working at his chambers in the Temple, with a busy aspect, and his hair (where he is not bald) made more rebellious than ever by the constant friction of his lawyer's-wig, I come, in a later time, upon my dear old Traddles.
And thus the work proceeds; the two tackles hoisting and lowering simultaneously; both whale and windlass heaving, the heavers singing, the blubber-room gentlemen coiling, the mates scarfing, the ship straining, and all hands swearing occasionally, by way of assuaging the general friction.
All machines have their friction; and possibly this does enough good to counter-balance the evil.
But when the friction comes to have its machine, and oppression and robbery are organized, I say, let us not have such a machine any longer.
If the injustice is part of the necessary friction of the machine of government, let it go, let it go: perchance it will wear smooth--certainly the machine will wear out.

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