CONSTITUENTS of THE UNIVERSE. 



The Measurement of Motion. 



JN any given movement this is determined 

 f| simply by the volume of that movement 

 in connection with the space, or distance 

 through which it moves, and the time occu- 

 pied in the movement. Neither of these three 

 essentials can be omitted. When the move- 

 ment called weight is involved, the estimate is 

 practically the same as in the case of any other 

 motion, simply for the reason that weight is 

 motion as well as any other movement. That 

 unseen motion called electricity, is subject to 

 precisely the same inflexible conditions, and 

 this explains why a trolly wire of such slight 

 dimensions is able to transmit such an enor- 

 mous amount of so-called force or power. It 

 is due to the tremendous speed of this motion. 

 The operation is the same in all cases, and of 

 course the greater the speed, the less the 

 volume or quantity of motion required to pro- 

 duce the same result. 



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