Elements of Natural Philosophy, Part 1 |
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Page
We have had considerable difficulty in compiling this treatise from the larger work
- arising from the necessity for condensation to a degree almost incompatible
with the design to omit nothing of importance : and we feel that it would have
given ...
We have had considerable difficulty in compiling this treatise from the larger work
- arising from the necessity for condensation to a degree almost incompatible
with the design to omit nothing of importance : and we feel that it would have
given ...
Page 6
23. The rate of motion of a point , or its rate of change of position , is called its
Velocity . It is greater or less as the space passed over in a given time is greater
or less : and it may be uniform , i.e. the same at every instant ; or it may be
variable .
23. The rate of motion of a point , or its rate of change of position , is called its
Velocity . It is greater or less as the space passed over in a given time is greater
or less : and it may be uniform , i.e. the same at every instant ; or it may be
variable .
Page 7
Thus , for a train moving up an incline in a N.E. direction , we may have the whole
velocity and the steepness of the incline given ; or we may express the same
ideas thus — the train is moving simultaneously northward , eastward , and
upward ...
Thus , for a train moving up an incline in a N.E. direction , we may have the whole
velocity and the steepness of the incline given ; or we may express the same
ideas thus — the train is moving simultaneously northward , eastward , and
upward ...
Page 8
... for instance , represents in magniB tude and direction the space which would
be described in one second by a point moving with the first of the given velocities
— and similarly OB for the second ; from A draw AC parallel and equal to OB .
... for instance , represents in magniB tude and direction the space which would
be described in one second by a point moving with the first of the given velocities
— and similarly OB for the second ; from A draw AC parallel and equal to OB .
Page 9
We therefore expand the definition just given , thus : -Acceleration is the rate of
change of velocity whether that change take place in the direction of motion or
not . 35. What is meant by change of velocity is evident from $ 31 . For if a velocity
...
We therefore expand the definition just given , thus : -Acceleration is the rate of
change of velocity whether that change take place in the direction of motion or
not . 35. What is meant by change of velocity is evident from $ 31 . For if a velocity
...
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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
Bibliographic information
| Title | Elements of Natural Philosophy, Part 1 Volume 23 of A library of universal literature. Science Clarendon Press series Nineteenth Century Collections Online (NCCO): Science, Technology, and Medicine: 1780-1925 |
| Authors | William Thomson Baron Kelvin, Peter Guthrie Tait |
| Publisher | Clarendon Press, 1873 |
| Original from | the New York Public Library |
| Digitized | 24 May 2011 |
| Length | 279 pages |
| Export Citation | BiBTeX EndNote RefMan |