416 HYDRAULICS AND ITS APPLICATIONS 



Usually k is small compared with h, in which case 



V = /v/ g (h -j- k} (approx.) 

 and if k is comparatively very small, this approximates to 



Since the distribution of pressure or motion is not altered by the 



Direction of Propagation. 



m -*-*f^*>^^^^mimimt^M jf^** w mm * 



FIG. 184C. Wave of Oscillation. 



motion of the stream, V is the same as the velocity of propagation of 

 the wave form in still water. 



The maximum velocity of horizontal translation of the particles 



forming the wave is given by VV , i.e., by V ? r. 



Experiment shows that as k approaches h in value, the wave breaks at the 

 crest. 



ART. 118A. WAVES OF OSCILLATION. 



In waves of oscillation, as exemplified in the ordinary deep sea wave, 

 the particles involved in the motion are not transported in the direction 



