## Elements of Natural Philosophy, Volume 1 |

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Page 4

In

flexible and inextensible cord stretched across part of its surface ; in practice ( to

escape as much as possible of the inevitable friction ) it is a wheel , on part of

whose ...

In

**theory**a pulley is simply a smooth body which changes the direction of aflexible and inextensible cord stretched across part of its surface ; in practice ( to

escape as much as possible of the inevitable friction ) it is a wheel , on part of

whose ...

Page 19

... Philosophy , there is one , namely , Harmonic Motion , which is of such

immense use , not only in ordinary kinetics , but in the

heat , etc. , that we make no apology for entering here into some little detail

regarding it .

... Philosophy , there is one , namely , Harmonic Motion , which is of such

immense use , not only in ordinary kinetics , but in the

**theories**of sound , light ,heat , etc. , that we make no apology for entering here into some little detail

regarding it .

Page 22

The amount of the lunar tide in the equilibrium

the solar . Hence the spring tides of this

1.1 , each reckoned in terms of the solar tide ; and at spring and neap tides the ...

The amount of the lunar tide in the equilibrium

**theory**is about 2 : 1 times that ofthe solar . Hence the spring tides of this

**theory**are 3.1 , and the neap tides only1.1 , each reckoned in terms of the solar tide ; and at spring and neap tides the ...

Page 56

The formula , deduced by Clairault from observation , and a certain

regarding the figure and density of the earth , may be employed to calculate the

most probable value of the apparent force of gravity , being the resultant of true ...

The formula , deduced by Clairault from observation , and a certain

**theory**regarding the figure and density of the earth , may be employed to calculate the

most probable value of the apparent force of gravity , being the resultant of true ...

Page 60

The

Dynamics , shows that , except in a definite class of distributions of matter , there

is no fixed point which can properly be called the Centre of Gravity of a rigid body

.

The

**theory**of the resultant action of gravity , which will be given under AbstractDynamics , shows that , except in a definite class of distributions of matter , there

is no fixed point which can properly be called the Centre of Gravity of a rigid body

.

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### Common terms and phrases

acceleration according acting action amount angle angular applied attraction axes axis body called centre centre of inertia circle 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 perpendicular plane portion position potential practical pressure principle problem produce projection proportional quantity radius reference relative remain remarkable 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