## Elements of Natural Philosophy, Part 1 |

### From inside the book

Page 21

... to B'A produced . We have obviously P'R = CP ( being

and parallel lines OS , CQ , on CR ) . Hence CŘ = CP + CP ; and therefore the

point R executes the V C resultant of the motions P and P. But CS , KINEMATICS

.

... to B'A produced . We have obviously P'R = CP ( being

**projections**of the equaland parallel lines OS , CQ , on CR ) . Hence CŘ = CP + CP ; and therefore the

point R executes the V C resultant of the motions P and P. But CS , KINEMATICS

.

Page 25

But the plane and position of the circle of which this

clearly be found so as to fulfil the condition of having the

coincident with any two given mutually bisecting lines . Hence any two given

simple ...

But the plane and position of the circle of which this

**projection**is taken mayclearly be found so as to fulfil the condition of having the

**projections**of the rangescoincident with any two given mutually bisecting lines . Hence any two given

simple ...

Page 39

... section of a surface is equal to that of the normal section through the same

tangent line multiplied by the secant of the inclination of the planes of the

sections . This is evident from the most elementary considerations regarding

... section of a surface is equal to that of the normal section through the same

tangent line multiplied by the secant of the inclination of the planes of the

sections . This is evident from the most elementary considerations regarding

**projections**. Page 43

Every orthogonal

included ) . Hence , and from § 139 , we see that an ellipse remains an ellipse ;

and an ellipsoid remains a surface of which every plane section is an ellipse ;

that ...

Every orthogonal

**projection**of an ellipse is an ellipse ( the case of a circle beingincluded ) . Hence , and from § 139 , we see that an ellipse remains an ellipse ;

and an ellipsoid remains a surface of which every plane section is an ellipse ;

that ...

Page 61

It is clear that the moment of a force round any axis , is equal to the area of the

moment round any point of the axis . 200. [ The

It is clear that the moment of a force round any axis , is equal to the area of the

**projection**on any plane perpendicular to the axis , of the figure representing itsmoment round any point of the axis . 200. [ The

**projection**of an area , plane or ...### What people are saying - Write a review

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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