## Elements of Natural Philosophy, Volume 1 |

### From inside the book

Results 1-5 of 43

Page 1

Force is recognized as

change of motion , and 2° so as to produce or to change motion . Dynamics ,

therefore , is divided into two parts , which are conveniently called STATICS and

...

Force is recognized as

**acting**in two ways : 1° so as to compel rest or to preventchange of motion , and 2° so as to produce or to change motion . Dynamics ,

therefore , is divided into two parts , which are conveniently called STATICS and

...

Page 35

Hence , just as in 38 a uniform acceleration ,

direction of motion of a point , produces a change in the direction of motion , but

does not influence the velocity ; so , if a body be rotating about an axis , and be ...

Hence , just as in 38 a uniform acceleration ,

**acting**perpendicularly to thedirection of motion of a point , produces a change in the direction of motion , but

does not influence the velocity ; so , if a body be rotating about an axis , and be ...

Page 55

It has been shown already in what sense the term ' point ' is to be taken , and ,

therefore , in what way a force may be imagined as

however , the place of application of a force is always either a surface or a space

of ...

It has been shown already in what sense the term ' point ' is to be taken , and ,

therefore , in what way a force may be imagined as

**acting**at a point . In reality ,however , the place of application of a force is always either a surface or a space

of ...

Page 57

According to this principle , the standard or unit force is that force which ,

on a national standard unit of matter during the unit of time , generates the unit of

velocity . This is known as Gauss ' absolute unit ; absolute , because it furnishes a

...

According to this principle , the standard or unit force is that force which ,

**acting**on a national standard unit of matter during the unit of time , generates the unit of

velocity . This is known as Gauss ' absolute unit ; absolute , because it furnishes a

...

Page 58

2 times the force which ,

velocity of one foot per second ; in other words , 32 . 2 is the number of absolute

units which measures the weight of a pound in this latitude . Thus , speaking very

...

2 times the force which ,

**acting**on a pound for a second , would generate avelocity of one foot per second ; in other words , 32 . 2 is the number of absolute

units which measures the weight of a pound in this latitude . Thus , speaking very

...

### 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.