initial commit / add all books

1 files changed, 18 insertions, 0 deletions

diff --git a/2258/CH2/EX2.4/2_4.sce b/2258/CH2/EX2.4/2_4.sce
new file mode 100755
index 000000000..9fecc5793
--- /dev/null
+++ b/2258/CH2/EX2.4/2_4.sce
@@ -0,0 +1,18 @@
+clc();

+clear;

+// To calculate the temperature

+//let X=E-Ef

+X=0.5;   //E-Ef=0.5 in eV

+X=X*1.6*10^-19;   //X in J

+FE=1/100;    //fermi function is 1% 

+k=1.38*10^-23;

+//FE=1/(1+exp(X/(k*T)))

+//therefore 1/FE = 1+exp(X/(k*T))

+//therefore (1/FE)-1 = exp(X/(k*T))

+//therefore log((1/FE)-1) = X/(k*T)

+//but log(x) = 2.303*log10(x)

+//therefore T = X/(k*log((1/FE)-1))

+//but log(x)=2.303*log10(x)

+//therefore T = X/(k*2.303*log10((1/FE)-1))

+T = X/(k*2.303*log10((1/FE)-1));

+printf("temperature is %f K",T);