1 files changed, 20 insertions, 0 deletions
diff --git a/2672/CH4/EX4.7/Ex4_7.sce b/2672/CH4/EX4.7/Ex4_7.sce
new file mode 100755
index 000000000..5eb2a9462
--- /dev/null
+++ b/2672/CH4/EX4.7/Ex4_7.sce
@@ -0,0 +1,20 @@
+//Example 4_7
+clc;
+clear;
+close;
+format('v',6)
+//given data : 
+c=3*10^8;//m/s//Speed of light
+h=1.05*10^-34;//Js//Planks Constant
+mc_GaAs=0.067;//mo
+mc_InAs=0.01;//mo
+k=[0.01 0.01 0.01];///per Angstrum
+mc_GaAs=mc_GaAs*0.91*10^-30;//kg
+mc_InAs=mc_InAs*0.91*10^-30;//kg
+E_GaAs=h^2*(3*k(1)*10^10)^2/2/mc_GaAs;//J
+E_GaAs=E_GaAs/(1.6*10^-19)*1000;//meV
+disp(E_GaAs,"Energy of the electron in GaAs(meV)");
+E_InAs=h^2*(3*k(1)*10^10)^2/2/mc_InAs;//J
+E_InAs=E_InAs/(1.6*10^-19)*1000;//meV
+disp(E_InAs,"Energy of the electron in InAs(meV)");
+//Answer given in the textbook is wrong.