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diff --git a/3014/CH1/EX1.4/Ex1_4.sce b/3014/CH1/EX1.4/Ex1_4.sce
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index 000000000..0a9fddd53
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@@ -0,0 +1,13 @@
+clc 
+// Given that
+KE = 4.55e-25 // Kinetic energy of an electron in Joule
+m = 9.1e-31 // Mass of any object in Kg
+h = 6.62e-34 // Plank constant
+printf("Example 1.4")
+v = sqrt(2*KE/m) // Calculation of velocity of moving electron
+p = m*v //Calculation of momentum of moving electron
+lambda = h/p // calculation of de Broglie wavelength
+printf("\n velocity of electron is %e m/s.",v)
+printf("\n momentum of electron is %e Kgm/s.",p)
+printf("\n de Broglie wavelength of electron is %e m.\n\n\n",lambda)
+
diff --git a/3014/CH1/EX1.4/Ex1_4.txt b/3014/CH1/EX1.4/Ex1_4.txt
new file mode 100755
index 000000000..a943301f0
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+
+
+Example 1.4
+ velocity of electron is 1.000000e+03 m/s.
+ momentum of electron is 9.100000e-28 Kgm/s.
+ de Broglie wavelength of electron is 7.274725e-07 m.