The Elements of Physics |
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Page 9
... Suppose a ship to move at the rate of three miles an hour , and a person on board to walk or to be drawn towards the stern at the same rate , he would be relatively in motion with respect to the ship , yet we might very properly ...
... Suppose a ship to move at the rate of three miles an hour , and a person on board to walk or to be drawn towards the stern at the same rate , he would be relatively in motion with respect to the ship , yet we might very properly ...
Page 41
... suppose we have a clock which beats seconds , and observe any body which moves in a straight line , if during the in- terval of every successive beat it passes over one foot , in sixty beats , or in one minute , it will have passed over ...
... suppose we have a clock which beats seconds , and observe any body which moves in a straight line , if during the in- terval of every successive beat it passes over one foot , in sixty beats , or in one minute , it will have passed over ...
Page 45
... suppose a body con- sidered as a point to be mov- ing in the direction A B , with such a velocity that it may describe AB uniformly in one second . Then by the first A B M law of motion it would in the next second describe Bb in the ...
... suppose a body con- sidered as a point to be mov- ing in the direction A B , with such a velocity that it may describe AB uniformly in one second . Then by the first A B M law of motion it would in the next second describe Bb in the ...
Page 46
... suppose the earth to revolve on its axis , a body struck north or south would deviate either to the east or west , neither of which is found to be the case ; a stone let fall from the top of a tower would not fall at its base ; the ball ...
... suppose the earth to revolve on its axis , a body struck north or south would deviate either to the east or west , neither of which is found to be the case ; a stone let fall from the top of a tower would not fall at its base ; the ball ...
Page 57
... suppose it produces no other effects . It is to this that we owe many other phenomena and many other motions , to which different names have been applied . Thus , for example , the flowing of rivers , the ascent of light bodies in ...
... suppose it produces no other effects . It is to this that we owe many other phenomena and many other motions , to which different names have been applied . Thus , for example , the flowing of rivers , the ascent of light bodies in ...
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Common terms and phrases
action angle angle of incidence appears atmosphere attraction axis ball body cause centre of gravity colours column conductor consequently considered convex lens crystal crystalline lens density direction distance double refraction earth effect elastic force electricity electromotive force equal equilibrium evaporation exerted exist experiments fluid glass greater hence inches incidence instance intensity iron isochronism laws length lens less light liquid luminous magnetic mass mercury metal mirror motion moving nature needle object observed ordinary ray orifice oscillation parallel particles passes pencil pendulum perpendicular phenomena plane poles portion position preceding pressure principles prism produced propagated properties rays reflected reflexion refraction remarkable resinous seen sensible shew shewn side solid sound space spectrum string substance suppose surface takes place temperature theory thermometer tion tricity tube vapour velocity vessel vibrations violet vitreous vitreous fluid wave weight zinc
Popular passages
Page 16 - ... it seems probable to me that God in the beginning formed matter in solid, massy, hard, impenetrable, movable particles, of such sizes and figures, and with such other properties and in such proportion to space as most conduced to the end for which He formed them; and that these primitive particles, being solids, are incomparably harder than any porous bodies compounded of them, even so very hard as never to wear or break in pieces — no ordinary power being able to divide what God himself made...
Page 15 - All these things being consider'd, it seems probable to me, that God in the Beginning form'd Matter in solid, massy, hard, impenetrable, moveable Particles, of such Sizes and Figures, and with such other Properties, and in such Proportion to Space, as most conduced to the End for which he form'd them...
Page 359 - Every ray of light in its passage through any refracting surface, is put into a certain transient constitution or state; which, in the progress of the ray, returns at equal intervals, and disposes the ray at every return to be easily transmitted through the next refracting surface ; and between the returns to be easily reflected by it.
Page 280 - The immediate cause of the phenomena of heat, then, is motion, and the laws of its communication are precisely the same as the laws of the communication of motion.
Page 281 - ... greatest in the last, the particles have a motion round their own axes, with different velocities, the particles of elastic fluids moving with the greatest quickness ; and that in...
Page 360 - ... hot; that the vibrations thus excited are propagated in the refracting or reflecting medium or substance, much after the manner that vibrations are propagated in the air for causing sound, and move faster than the rays so as to overtake them...
Page 91 - that every particle of matter in the universe attracts every other particle, with a force whose direction is that of the line joining the two, and whose magnitude is directly as the product of their masses, and inversely as the square of their distances from each other.
Page 16 - Particles continue entire, they may compose Bodies of one and the same Nature and Texture in all Ages: But should they wear away, or break in pieces, the Nature of Things depending on them, would be changed. Water and Earth composed of old worn Particles and Fragments of Particles, would not be of the same Nature and Texture now, with Water and Earth composed of entire Particles, in the Beginning. And therefore that Nature may be lasting, the Changes of corporeal Things are to be placed only in the...
Page 281 - It seems possible to account for all the phenomena of heat, if it be supposed that in solids the particles are in a constant state of vibratory motion, the particles of the hottest bodies moving with the greatest velocity and through the greatest space ; that in...
Page 490 - ... some of those innumerable beautiful productions it casts up with lavish prodigality, but whose acquisition can be regarded as no diminution of the treasures that remain.