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Diffstat (limited to '2708/CH19/EX19.5')
| -rwxr-xr-x | 2708/CH19/EX19.5/ex_19_5.sce | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/2708/CH19/EX19.5/ex_19_5.sce b/2708/CH19/EX19.5/ex_19_5.sce new file mode 100755 index 000000000..445e60ce3 --- /dev/null +++ b/2708/CH19/EX19.5/ex_19_5.sce @@ -0,0 +1,12 @@ +//Example 19.5 // energy of electron
+clc;
+clear;
+//given data :
+h=6.626D-34;// plank constant in J-s
+a=.3D-9;// unit cell width in m
+p=h/(2*a);// electron momentum
+m=9.1D-31;// mass of electron in Kg
+E=p^2/(m*2);// formula for energy
+disp(p,"electron momentum in Kg m/s")
+E=E/1.6D-19;// ro convert in ev
+disp(E,"energy of electron at this momentum in eV")
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