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diff --git a/1646/CH1/EX1.8/Ch01Ex8.sce b/1646/CH1/EX1.8/Ch01Ex8.sce
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+// Scilab Code Ex1.8: Page:29 (2011) 
+clc;clear;
+c = 3e+008;    // Speed of light in vacuum, m/s
+tau0 = 2e-008;    // Mean lifetime of meson at rest, m/s
+v = 0.8*c;    // Velocity of moving meason, m/s
+tau = tau0/sqrt(1-v^2/c^2);    // Mean lifetime of meson in motion, m/s
+printf("\nThe mean lifetime of meson in motion = %4.2e s", tau);
+
+// Result
+// The mean lifetime of meson in motion = 3.33e-008 s 
+\ No newline at end of file