﻿696 Dr. J. R. Wilton on Hippies. 



is a relatively high ripple, we have 



K =2, \ = 1'22 cm., \/27r=-194, 



Ai=-1, A 2 = -0083, A 3 = -067, A 4 = '0012, 



A 5 =--0087, 



/a=2*18, c = 20*3 cm./sec. 



Corresponding values of x and y are given in Table II., 

 and the ripple is shown in fig. 2. 



Table II. 

 Ripple of wave-length 1*22 cm. 



1. 



ct — x. 



y- 











181 



tt/Q 



•018 



165 



7T/3 



•038 



111 



tt/2 



•096 



001 



2tt/3 



•239 - 



110 



ott/6 



•421 - 



167 



7T 



•611 



185 



Ym. 2. 



/ 



Ripple of length 1-22 cm. ; amplitude '37 cm. ; velocity 20'3 cm./sec. 



Again, when k=1 we find A 1? &c. from equations (16). 

 Taking in this case a = 1/3, we find 



K =l f X=l-31cm., a/2tt = -208, 



A 1= =-333, A 2 =--043, A 3 = -0037, A 4 = -0029, 



A 5 = -0004, 



fju=l-S5, c= 19*4 cm./sec. 



Corresponding values of x and y are given in Table III. 

 and the ripple is drawn in fig. 3. 



