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//Example 3_4
clc();
clear;
//To find the minimum thickness of half wave and quarter wave plates
lemda=589.3*10^-9 //units in meters
u0=1.65833
ue=1.48640
t1=lemda/(2*(u0-ue))
printf("thickness of half wave plate is %.7f mm",t1)
t2=lemda/(4*(u0-ue))
printf("\n thickness of quarter wave plate is %.8f mm",t2)
printf("\n \n the minimum thickness of wave plate is %.7f mm",t1)
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