From b1f5c3f8d6671b4331cef1dcebdf63b7a43a3a2b Mon Sep 17 00:00:00 2001
From: priyanka
Date: Wed, 24 Jun 2015 15:03:17 +0530
Subject: initial commit / add all books

---
 2780/CH3/EX3.22/Ex3_22.sce | 10 ++++++++++
 1 file changed, 10 insertions(+)
 create mode 100755 2780/CH3/EX3.22/Ex3_22.sce

(limited to '2780/CH3/EX3.22')

diff --git a/2780/CH3/EX3.22/Ex3_22.sce b/2780/CH3/EX3.22/Ex3_22.sce
new file mode 100755
index 000000000..1b56e2b62
--- /dev/null
+++ b/2780/CH3/EX3.22/Ex3_22.sce
@@ -0,0 +1,10 @@
+clc
+//to calculate difference in the two wavelengths
+//grating equation for principal maxima is (e+d)*sintheta=n*lambda...............eq(1)
+//differentiate both sides ,we get dtheta=n*dlambda/((e+d)*costheta)...........eq(2)
+lambda=5000           //mean value of wavelengths in angstrom
+cottheta=1.732       //cot30degree=1.732
+dtheta=0.01 //in radian
+//put the value of n from eq(2),we can write eq(2)  
+dlambda=lambda*dtheta*cottheta
+disp("difference in two wavelengths is dlambda="+string(dlambda)+"angstrom")
-- 
cgit