Posted by Anonymous on Tuesday, November 20, 2012 at 3:19pm.
1/200 = 0.005 meters / rad
pi rad / node x 0.005 meters / rad = 0.0157 m / node
k =200 rad/m
k=2π/λ
=> λ=2π/k=2π/200 =π/100=0.0314 m
x= λ/2=0.0314/2=0.0157 m
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