A Treatise of Mechanics, Theoretical, Practical, and Descriptive, Band 2F.C. and J. Rivington, 1815 - 58 Seiten |
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Seite 2
... equal momentum : and by the multiplication of wheels , levers , & c . the effect of the machine , instead of being increased , is diminished in proportion to the augmented friction of the moving parts . Hence it follows that in practice ...
... equal momentum : and by the multiplication of wheels , levers , & c . the effect of the machine , instead of being increased , is diminished in proportion to the augmented friction of the moving parts . Hence it follows that in practice ...
Seite 6
... equal in length to the beam FH : let the end н of the beam Fн be con- fined by a pin to run along the groove CD ; and let two other pins be fixed , one at G the middle point of the beam FH , the other at c the lower point where the ...
... equal in length to the beam FH : let the end н of the beam Fн be con- fined by a pin to run along the groove CD ; and let two other pins be fixed , one at G the middle point of the beam FH , the other at c the lower point where the ...
Seite 7
... equal , they will perform complete revolutions in one and the same time . For since the bases and altitudes are equal , circles on either cone parallel to the base , and at equal distances from the vertex , as the distances a2 , a2 ...
... equal , they will perform complete revolutions in one and the same time . For since the bases and altitudes are equal , circles on either cone parallel to the base , and at equal distances from the vertex , as the distances a2 , a2 ...
Seite 8
... equal to the angle in which the motion is proposed to be communicated : let it be required for the shaft de to revolve m times while the shaft ab revolves n times ; and let the line i be drawn parallel to de at a distance equal to the ...
... equal to the angle in which the motion is proposed to be communicated : let it be required for the shaft de to revolve m times while the shaft ab revolves n times ; and let the line i be drawn parallel to de at a distance equal to the ...
Seite 23
... equal part of A , as is greater than a ; if therefore the friction was in proportion to the weight , cæteris paribus , it is manifest , that the friction on a would be equal to the friction on A , the whole friction being , upon such a ...
... equal part of A , as is greater than a ; if therefore the friction was in proportion to the weight , cæteris paribus , it is manifest , that the friction on a would be equal to the friction on A , the whole friction being , upon such a ...
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acceleration angle axis axle balance balance spring barometer beam body bottom brass capstan centre centrifugal force circular circular saw circumference cistern clock cock column common construction contrivance cord Coulomb crane crank cylinder descend diameter distance effect elasticity employed engine equal experiments extremity fastened feet fixed fluid frame friction groove gudgeons hole horizontal horizontal plane horse hygrometer inches ingenious invented iron length lever load lower machine machinery manner means mercury mill motion moving force nearly observed passes pendulum piece pinion pipe piston pivots placed planchets plane plate pressure produce proportion pulley pump quantity quicksilver radius raised ratio resistance roller rope round sails screw shaft shew side slide specific gravity spirit of wine steam stroke surface teeth thermometer tion tube turn upper valve vapour velocity vertical vessel vibration water-wheel weight wheel whole
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Seite 45 - ... (7) The load, at a maximum, that sails of a similar figure and position will overcome, at a given distance from the centre of motion, will be as the cube of the radius.
Seite i - Studies serve for delight, for ornament, and for ability. Their chief use for delight, is in privateness and retiring; for ornament, is in discourse; and for ability, is in the judgment and disposition of business...
Seite 530 - I have seen the water run like a constant fountain stream forty feet high. One vessel of water rarefied by fire driveth up forty of cold water ; and a man that tends the work is but to turn two cocks, that, one vessel of water being consumed, another begins to force and refill with cold water, and so successively, the fire being tended and kept constant, which the self same person may likewise abundantly perform in the interim, between the necessity of turning the said cocks.
Seite 525 - A way how to make a boat work itself against wind and tide, yea both without the help of man or beast ; yet so that the wind or tide, though directly opposite, shall force the ship or boat against itself; and in no point of the compass...
Seite 534 - ... to keep them sweet, running through several streets, and so performing the work of scavengers, as well as furnishing the inhabitants with sufficient water for their private occasions...
Seite 434 - ... means afforded, ex re nata, and no need of provision beforehand, though much better if foreseen, and means prepared for it, and a premeditated course taken by mutual consent of parties.
Seite 45 - If sails are of a similar figure and position, the number of turns in a given time will be reciprocally as the radius or length of the sail.
Seite vii - Another idea we have of body, is the power of communication of motion by impulse ; and of our souls, the power of exciting motion by thought. These ideas, the one of body, the other of our minds, every day's experience clearly furnishes us with : but if here again we inquire how this is done, we are equally in the dark. For in the communication of motion by impulse, wherein as much motion is lost to one body as is got to the other, which is the...
Seite 527 - A way in one night's time, to raise a bulwark twenty or thirty foot high, cannon-proof, and cannon mounted upon it, with men to overlook, command, and batter a town ; for, though it contain but four pieces, they shall be able to discharge two hundred bullets each hour. 31.
Seite 45 - The effects of the same sails, at a maximum, are nearly, but somewhat less than, as the cubes of the velocity of the wind.