initial commit / add all books

6 files changed, 46 insertions, 0 deletions

diff --git a/1172/CH9/EX9.1/9_1.txt b/1172/CH9/EX9.1/9_1.txt
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+ # Problem 1 # 

+Standard formula used 

+	 M = m - 2.5log(L/L_0) 

+ In two days novas brightness is increased by 160000 times nearly

diff --git a/1172/CH9/EX9.1/Example9_1.sce b/1172/CH9/EX9.1/Example9_1.sce
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index 000000000..5af7d8f50
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+clc

+//Given that

+m_i = 15 // initial magnitude of supernova

+m_f = 2 // final magnitude of supernova

+// sample problem 1 page No. 332

+printf("\n # Problem 1 # \n")

+

+printf("Standard formula used \n\t M = m - 2.5log(L/L_0) ")

+del_m = m_i - m_f // calculation of change in magnitude

+brightness_ratio = 100^(del_m/5)  // calculation of increment in brightness ratio.

+printf ("\n In two days novas brightness is increased by %d times nearly", ceil(brightness_ratio / 10000)*10000 )

diff --git a/1172/CH9/EX9.2.1/9_2a.txt b/1172/CH9/EX9.2.1/9_2a.txt
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index 000000000..76b9f04b3
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+ # Problem 2a # 

+Standard formula used 

+	 M = m - 2.5log(L/L_0) 

+ Change in magnitude is 0.752575 times

diff --git a/1172/CH9/EX9.2.1/Example9_2a.sce b/1172/CH9/EX9.2.1/Example9_2a.sce
new file mode 100755
index 000000000..f3e347b17
--- /dev/null
+++ b/1172/CH9/EX9.2.1/Example9_2a.sce
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+clc

+//Given that

+b_ratio = 2 // ratio of light output in a period 

+// sample problem 2a page No. 333

+printf("\n # Problem 2a # \n")

+

+printf("Standard formula used \n\t M = m - 2.5log(L/L_0) ")

+del_m = 2.5 * log10(b_ratio) // calulation of change in magnitude

+printf ("\n Change in magnitude is %f times", del_m )

diff --git a/1172/CH9/EX9.2.2/9_2b.txt b/1172/CH9/EX9.2.2/9_2b.txt
new file mode 100755
index 000000000..8d576c589
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+++ b/1172/CH9/EX9.2.2/9_2b.txt
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+ # Problem 2b # 

+Standard formula used 

+	 M = m - 2.5log(L/L_0) 

+ Capella is  155.688334 times brighter than sun.

diff --git a/1172/CH9/EX9.2.2/Example9_2b.sce b/1172/CH9/EX9.2.2/Example9_2b.sce
new file mode 100755
index 000000000..e3f01e302
--- /dev/null
+++ b/1172/CH9/EX9.2.2/Example9_2b.sce
@@ -0,0 +1,14 @@
+clc

+// given that

+m_capella = 0.05 // magnitude of brightness of capella at 14 parsecs

+m_sun = 4.8 // absolute magnitude of brightness of sun

+d = 14 // distance of capella in parsecs

+D = 10 // distance of capella considerd for observation

+// sample problem 2b page No. 333

+printf("\n # Problem 2a # \n")

+

+printf("Standard formula used \n\t M = m - 2.5log(L/L_0) ")

+M_capella = m_capella - 5*log10(d/D) // calculation of absolute magnitude of brightness at distance of 10 parsecs

+del_m = m_sun - M_capella // difference between absolute magnitude of sun and capella

+ratio = 10^(del_m/2.5) 

+printf ("\n Capella is  %f times brighter than sun.", ratio )