initial commit / add all books

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diff --git a/1271/CH15/EX15.22/22.txt b/1271/CH15/EX15.22/22.txt
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+++ b/1271/CH15/EX15.22/22.txt
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+
+# PROBLEM 22 # 

+Standard formula used 

+ E = (n^2 * h^2) / (8 * m * L^2)) 

+ p_n = n*h/(2*pi) 

+

+ Order of exited state is 16.

+ Momentum of electron is 1.326216e-23 kg-m/sec. 
\ No newline at end of file
diff --git a/1271/CH15/EX15.22/example15_22.sce b/1271/CH15/EX15.22/example15_22.sce
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+
+clc 
+// Given that
+l = 4e-10 // width of box in m
+E = 9.664e-17 // energy of electron in J
+e = 1.6e-19 // charge on an electron in C
+m = 9.1e-31 // mass of electron in kg
+c = 3e8 // speed of light in m/sec
+h = 6.62e-34 // Planck constant in J-sec
+// Sample Problem 22 on page no. 15.33
+printf("\n # PROBLEM 22 # \n")
+printf("Standard formula used \n")
+printf(" E = (n^2 * h^2) / (8 * m * L^2)) \n p_n = n*h/(2*pi) \n")
+n = 1 // for n=1
+E1 = (n^2 * h^2) / (8 * m * l^2)
+N = sqrt(E / E1)
+p = ((N) * h) / (2 * l)
+printf("\n Order of exited state is %d.\n Momentum of electron is %e kg-m/sec.",N,p)