## Elements of Natural Philosophy, Volume 1 |

### From inside the book

Results 1-5 of 27

Page 54

Force is wholly expended in the Action it produces ; and the body , after the force

ceases to act , retains by its inertia the direction of motion and the velocity which

were given to it . Force may be of divers kind , as

Force is wholly expended in the Action it produces ; and the body , after the force

ceases to act , retains by its inertia the direction of motion and the velocity which

were given to it . Force may be of divers kind , as

**pressure**, or gravity , or friction ... Page 56

It is a secondary application of our standards of mass to employ them for the

measurement of forces , such as steam

cases where great accuracy is required , the results obtained by such a method

have ...

It is a secondary application of our standards of mass to employ them for the

measurement of forces , such as steam

**pressures**, muscular power , etc . In allcases where great accuracy is required , the results obtained by such a method

have ...

Page 63

Thus the mutual normal

of the cord to which a pendulum bob is attached , or the attraction of the sun on a

planet if the planet describe a circle with the sun in the centre , are all instances ...

Thus the mutual normal

**pressure**between a fixed and moving body , the tensionof the cord to which a pendulum bob is attached , or the attraction of the sun on a

planet if the planet describe a circle with the sun in the centre , are all instances ...

Page 68

But more is required before we can completely understand the more complex

cases of motion , especially those in which we have mutual actions between or

amongst two or more bodies ; such as , for instance , attractions , or

But more is required before we can completely understand the more complex

cases of motion , especially those in which we have mutual actions between or

amongst two or more bodies ; such as , for instance , attractions , or

**pressures**... Page 80

The ' equations of motion ' in any particular case are , as Lagrange has shown ,

deduced from it with great ease . 259 . When two bodies , in relative motion ,

come into contact ,

them ...

The ' equations of motion ' in any particular case are , as Lagrange has shown ,

deduced from it with great ease . 259 . When two bodies , in relative motion ,

come into contact ,

**pressure**begins to act between them to prevent any parts ofthem ...

### What people are saying - Write a review

We haven't found any reviews in the usual places.

### Other editions - View all

### 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.