THEORY OF SIMPLE WAVES 



315 



-Wove Direc+ion 



C Track of Rolling Circle 



Fig. 1 Geometry of trochoid 



•• Direction of waveodvance 



Corresponding 5+i 

 wa+er levels 



A volume such as obc d in sfill water is distorfed 05 a b c'd'in wove water 



Fig. 2 Trochoidal wave motion 



