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+// Scilab Code Ex4.9 : Page-94 (2010)
+lambda = 550e-09;    // Wavelength of light, m
+D = 20e-02;    // Diameter of objective of telescope, m
+d = 6e+003;    // Distance of two points from the objective of telescope, m
+theta = 1.22*lambda/D;    // Angular separation between two points, rad
+x = theta*d;    // Linear separation between two points, m
+printf("\nThe linear separation between two points = %5.2f mm", x/1e-03);
+
+// Result 
+// The linear separation between two points = 20.13 mm
+\ No newline at end of file