1 files changed, 13 insertions, 0 deletions
diff --git a/3717/CH15/EX15.4/Ex15_4.sce b/3717/CH15/EX15.4/Ex15_4.sce
new file mode 100644
index 000000000..68ad39a36
--- /dev/null
+++ b/3717/CH15/EX15.4/Ex15_4.sce
@@ -0,0 +1,13 @@
+// Ex15_4 Page:298 (2014)
+clc;clear;
+lambda = 693e-009;    // Wavelength of laser beam, m
+D = 3e-003;    // Diameter of the mirror, m
+d = 300e+003;    // Height of satellite above the surface of earth, m
+delta_theta = 1.22*lambda/D;    // Angular spread of the laser beam, rad
+a = delta_theta*d;    // Diameter of the laser beam on the satellite, m
+printf("\nThe angular spread of the laser beam = %4.2e rad", delta_theta);
+printf("\nThe diameter of laser beam on the satellite = %4.1f m", a);
+
+// Result
+// The angular spread of the laser beam = 2.82e-004 rad
+// The diameter of laser beam on the satellite = 84.5 m 
+\ No newline at end of file