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| author | prashantsinalkar | 2017-10-10 12:27:19 +0530 |
|---|---|---|
| committer | prashantsinalkar | 2017-10-10 12:27:19 +0530 |
| commit | 7f60ea012dd2524dae921a2a35adbf7ef21f2bb6 (patch) | |
| tree | dbb9e3ddb5fc829e7c5c7e6be99b2c4ba356132c /3547/CH3/EX3.1 | |
| parent | b1f5c3f8d6671b4331cef1dcebdf63b7a43a3a2b (diff) | |
| download | Scilab-TBC-Uploads-7f60ea012dd2524dae921a2a35adbf7ef21f2bb6.tar.gz Scilab-TBC-Uploads-7f60ea012dd2524dae921a2a35adbf7ef21f2bb6.tar.bz2 Scilab-TBC-Uploads-7f60ea012dd2524dae921a2a35adbf7ef21f2bb6.zip | |
initial commit / add all books
Diffstat (limited to '3547/CH3/EX3.1')
| -rw-r--r-- | 3547/CH3/EX3.1/3_1.jpg | bin | 0 -> 59356 bytes | |||
| -rw-r--r-- | 3547/CH3/EX3.1/Ex3_1.sce | 24 |
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diff --git a/3547/CH3/EX3.1/3_1.jpg b/3547/CH3/EX3.1/3_1.jpg Binary files differnew file mode 100644 index 000000000..704c56d78 --- /dev/null +++ b/3547/CH3/EX3.1/3_1.jpg diff --git a/3547/CH3/EX3.1/Ex3_1.sce b/3547/CH3/EX3.1/Ex3_1.sce new file mode 100644 index 000000000..d6a44a056 --- /dev/null +++ b/3547/CH3/EX3.1/Ex3_1.sce @@ -0,0 +1,24 @@ +// Example No. 3.1
+// To calculate the Einstein A and B coefficients
+// Page no.99
+
+clc;
+clear;
+
+// Given data
+tsp=2*10^-9; // Spontaneous lifetime associated with 2 → 1 transition in seconds
+
+deltaE=2.4*10^(-19); // The energy difference between the levels
+h=1.054*10^(-34); // The distance between two levels
+omega=deltaE/h; // Frequency in rad/sec
+v=1.25*10^8; // The velocity of light in the medium in m/s
+
+// The Einstein A and B coefficients
+A=(1/tsp)*10^-8; // Einstein coefficient A
+B=(((1/tsp)*%pi^2*v^3)/(h*omega^3))*10^-21; // Einstein coefficient B
+
+// Displaying the result in command window
+printf('\n Einstein coefficient A = %0.0f X 10^8 s^(-1)',A);
+printf('\n Einstein coefficient B = %0.2f X 10^21 m^3/J.s^2',B);
+
+// The answers are varrying due to round off error
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