Question
Sun January 29, 2012 By: Thajvirkaur

please explain the meaning of sinusoidal variation

Expert Reply
Sun January 29, 2012
Sinusoidal variation can be understood from  sin and cosin functions.
In em wave the electric field and magnetic varies as the functions of sin or cosin.
for more detail you can go to theory part.
if you know the graph of sin and cosin it will be easy for you to understand this.  
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