544 



PROFESSOR KELLAND ON THE THEORY OF WAVES. 

 32.2 



r* = 



12 



.7818 



.87686 



^32^2^^6515) _ 



8.7686 ~ '^•'^^^^ 



c = 1.547 



hence, in eleven seconds, 17 feet ought to have been described instead of 20. 

 Wave 53. 



A =7.04 

 2e=.89 

 1 



7.04 





14.08 



«» .7616 1 



32.2 

 12 



.7616 



, .9.52 _ 32.2 



•7:or-^2--^^^^ 



,2^ (32.2) (.7616) (7.04) 

 12 (.952) 



^ 16.1) (.1904) (2.35) 



^ (16.1) (.0476) (2.35) 

 Il9 



= 16 nearly 



c = 4 



hence, in nine seconds, 36 feet ought to be described, whilst the result of obser- 

 vation is 40. 



Wave in Mr Russell's memoir, entitled " Researches in Hydrodynamics," 

 Trans. Royal Soc. Edin. vol. xiv. 



A=13, 2e=2.2 

 A=2 7r/i-4.4 



c= i^?Iii (2.;,-4.4) P ^ fl-lilLlI P) 

 Stt ^ ^ V 27rA-4.4 / 



2a h = 



4:irh 



27rA-4.4 



j_2^ 



TT/i 



2.2 



= 2 1061 



(3.1416) (13) 



P = 



g^'-l ^ 8.2155-1 _ 7-2155 

 e^"- +1~ 8.2155 + 1 "9.2155 



= .78297 



