1 files changed, 13 insertions, 0 deletions
diff --git a/2243/CH4/EX4.9/Res4_9.txt b/2243/CH4/EX4.9/Res4_9.txt
new file mode 100755
index 000000000..f5d3758a2
--- /dev/null
+++ b/2243/CH4/EX4.9/Res4_9.txt
@@ -0,0 +1,13 @@
+ (a)Wavelength :4680  A 
+ Angle of 1st order Diffraction : 28.0 degrees 
+ Spacing = 9968.7 A
+
+(b)Wavelength :4800  A 
+ Angle of 1st order Diffraction : 28.7 degrees 
+ Spacing = 9995.3 A
+
+(c)Wavelength :5770  A 
+ Angle of 1st order Diffraction : 35.5 degrees 
+ Spacing = 9936.2 A
+
+Mean Spacing = 9966.7 A 
+\ No newline at end of file