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acting action amount angle applied atoms ball beam blow body bulk called cast iron cause centre of gravity centrifugal force circular compression condition curved cylinder derived diagram diameter direction of arrow ductility effect elastic engine equal exerted fact fall fibres floating flow fluid force friction give given greater hammer heat illustrated increase iron known law of attraction less liquid lubricant machine machinist mass material mechanical metal molecules momentum motion movements or motions moving natural oblique parallelogram of forces particles passed phenomena pipe piston placed porosity position practical preceding paragraph pressure principle proportion repulsion resist result revolving rolling screw shaft side simply solid space specific gravity speed steam steam engine steel strain student substances suppose surface temperature tendency term tube velocity vertical vessel weight wheel wind word wrought iron young reader
الصفحة 24 - Force is an action between two bodies, either causing or tending to cause change in their relative rest or motion.
الصفحة 307 - The cloud-capt towers, the gorgeous palaces, The solemn temples, the great globe itself; * Yea, all which it inherit, shall dissolve, And, like the baseless fabric of a vision, Leave not a wreck behind.
الصفحة 24 - DEFINITION IV An impressed force is an action exerted upon a body, in order to change its state, either of rest, or of uniform motion in a right line.
الصفحة 397 - The quantity of heat that will raise the temperature of one pound of water one Fahrenheit degree is equivalent to about 778 footpounds.
الصفحة 498 - ... the pressure of the air on the surface of the water in the basin will force it up into the tumbler and nearly fill it (tig.
الصفحة 355 - The oil-bath probably represents the most perfect lubrication possible, and the limit beyond which friction cannot be reduced by lubrication; and the experiments show that with speeds of from 100 to 200...
الصفحة 69 - ... inches long. The velocity increases simply as the time, that is, the speed in falling is twice as great in two seconds as in one ; three times as great in three seconds ; four -times as great in four seconds, and so forth. A stone will fall four times as far in two as in one second, while its velocity will be doubled ; nine times as far in three seconds, while its velocity will be tripled, etc.
الصفحة 349 - Nov., 1883) show that the absolute friction, that is, the absolute tangential force per square inch of bearing, required to resist the tendency of the brass to go round with the journal, is nearly a constant under all loads, within ordinary working limits. Most certainly it does not increase in direct proportion to the load, as it should do according to the ordinary theory of solid friction. The...