## Elements of Natural Philosophy, Part 1 |

### From inside the book

Page 8

The velocity of a point is said to be accelerated or retarded

increases or diminishes , but the word acceleration is generally used in either

sense , on the understanding that we may regard its quantity as either positive or

negative ...

The velocity of a point is said to be accelerated or retarded

**according**as itincreases or diminishes , but the word acceleration is generally used in either

sense , on the understanding that we may regard its quantity as either positive or

negative ...

Page 12

This includes the case of a satellite or planet revolving about its primary ,

the plane containing the fixed point and the line of motion of the moving point at

any ...

This includes the case of a satellite or planet revolving about its primary ,

**according**to Kepler's first law . Evidently there is no acceleration perpendicular tothe plane containing the fixed point and the line of motion of the moving point at

any ...

Page 16

The intensity of heat and light emanating from a point , or from a uniformly

radiating spherical surface , diminishes

distance from the centre . Hence the rate at which a planet receives heat and light

from ...

The intensity of heat and light emanating from a point , or from a uniformly

radiating spherical surface , diminishes

**according**to the inverse square of thedistance from the centre . Hence the rate at which a planet receives heat and light

from ...

Page 19

The relative position , velocity , and acceleration are in such a case the

geometrical resultants of the various components combined

preceding rules . 68. The following practical methods of effecting such a

combination in the ...

The relative position , velocity , and acceleration are in such a case the

geometrical resultants of the various components combined

**according**topreceding rules . 68. The following practical methods of effecting such a

combination in the ...

Page 23

This maximum deviation will be in advance 2 : 1 ' or in arrear

crown of the solar tide precedes or follows the crown of the lunar tide ; and it will

be exactly reached when the interval of phase between the two component tides

is ...

This maximum deviation will be in advance 2 : 1 ' or in arrear

**according**as thecrown of the solar tide precedes or follows the crown of the lunar tide ; and it will

be exactly reached when the interval of phase between the two component tides

is ...

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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 experience 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 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