## Elements of Natural Philosophy, Volume 1 |

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Page 4

... cord , or fine

be found among natural or artificial productions , a perfectly flexible and

inextensible line . The elementary kinematics of this subject require no

investigation .

... cord , or fine

**wire**, or a fine fibre , filament , or hair , may suggest , what is not tobe found among natural or artificial productions , a perfectly flexible and

inextensible line . The elementary kinematics of this subject require no

investigation .

Page 20

sounding bodies such as a tuning - fork or pianoforte -

and of the various media in which waves of sound , light , heat , etc . , are

propagated . 71 . The Amplitude of a simple harmonic motion is the range on one

side ...

sounding bodies such as a tuning - fork or pianoforte -

**wire**; whence their name ;and of the various media in which waves of sound , light , heat , etc . , are

propagated . 71 . The Amplitude of a simple harmonic motion is the range on one

side ...

Page 28

To mention only sonorous vibrations , the propagation of electric signals along a

telegraph

their generality intractable without it , is to give but a feeble idea of its importance

.

To mention only sonorous vibrations , the propagation of electric signals along a

telegraph

**wire**, and the conduction of heat by the earth ' s crust , as subjects intheir generality intractable without it , is to give but a feeble idea of its importance

.

Page 108

Or we may , by increasing the strength of the current , or by coiling the

times about the needle ( as will be explained when we describe the

galvanometer ) , multiply the effects of the current so that those of the earth ' s

magnetism ...

Or we may , by increasing the strength of the current , or by coiling the

**wire**manytimes about the needle ( as will be explained when we describe the

galvanometer ) , multiply the effects of the current so that those of the earth ' s

magnetism ...

Page 111

But Weber goes farther , he assumes that an electric current consists in the

motion of particles of two kinds of electricity moving in opposite directions through

the conducting

of ...

But Weber goes farther , he assumes that an electric current consists in the

motion of particles of two kinds of electricity moving in opposite directions through

the conducting

**wire**; and that these particles exert forces on other such particlesof ...

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### Common terms and phrases

acceleration according acting action amount angle angular applied attraction axes axis becomes body called centre centre of inertia circle cloth component condition consider constant corresponding couple course curvature curve denote density described determined direction displacement distance divided effect elastic elements energy equal equations equilibrium evidently expression figure fixed fluid force friction give given gravity harmonic Hence important increase infinitely small instant interval kinetic length less mass matter mean measured method motion moving natural normal observation opposite parallel particle passing path period perpendicular plane portion position potential practical pressure principle problem produce projection proportional quantity radius reference relative remain respectively rest resultant right angles rigid rotation round sides simple solid space spherical square straight strain stress suppose surface theory turned uniform unit velocity weight whole wire

### Popular passages

Page 161 - 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 9 - Persius. The Satires. With a Translation and Commentary. By John Conington, MA, late Corpus Professor of Latin in the University of Oxford. Edited by H. Nettleship, MA Second Edition.

Page 65 - Every body continues in its state of rest or of uniform motion in a straight line, except in so far as it is compelled by force to change that state.

Page 10 - Crown 8vo. cloth, 7s. 6d. A Treatise on Electricity and Magnetism. By J. Clerk Maxwell, MA, FRS, Professor of Experimental Physics in the University of Cambridge.

Page 28 - Fourier's theorem is not only one of the most beautiful results of modern analysis, but may be said to furnish an indispensable instrument in the treatment of nearly every recondite question in modern physics.

Page 161 - Newton generalized the law of attraction into a statement that every particle of matter in the universe attracts every other particle with a force which varies directly as the product of their masses and inversely as the square of the distance between them; and he thence deduced the law of attraction for spherical shells of constant density.

Page 66 - Change of motion is proportional to the impressed force and takes place in the direction of the straight line in which the force acts.

Page 68 - To every action there is always an equal and contrary reaction; or, the mutual actions of any two bodies are always equal and oppositely directed in the same straight line.

Page 9 - An Elementary Treatise on Quaternions. By PG TAIT, MA, Professor of Natural Philosophy in the University of Edinburgh ; formerly Fellow of St Peter's College, Cambridge. Second Edition. Demy 8vo. 14*.

Page 130 - UNTIL we know thoroughly the nature of matter and the forces which produce its motions, it will be utterly impossible to submit to mathematical reasoning the exact conditions of any physical question.