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diff --git a/3537/CH1/EX1.6/Ex1_6.sce b/3537/CH1/EX1.6/Ex1_6.sce
new file mode 100644
index 000000000..17d483ddb
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+++ b/3537/CH1/EX1.6/Ex1_6.sce
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+//Example 1_6
+clc; 
+clear;
+//find the distance between the slits
+lamda=500          //units in nm
+lamda=500*10^-9
+D=2               //units in mts
+f=100
+d1=5             //units in cm
+d1=5*10^-2         //units in mts
+betaa=d1/f        //unitd in mts
+//the distance between the slits 
+d=(lamda*D)/betaa    //units in mts
+d=d*10^3            //units in mm
+printf("distance between slits is %dmm",d)
+\ No newline at end of file