diff options
Diffstat (limited to '2453/CH3/EX3.8/3_8.sce')
| -rwxr-xr-x | 2453/CH3/EX3.8/3_8.sce | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/2453/CH3/EX3.8/3_8.sce b/2453/CH3/EX3.8/3_8.sce new file mode 100755 index 000000000..a793ffc76 --- /dev/null +++ b/2453/CH3/EX3.8/3_8.sce @@ -0,0 +1,9 @@ +//To calculate the wavelength
+m = 9.1*10^-31; //mass of electron, kg
+h = 6.626*10^-34; //planck's constant
+e = 1.6*10^-19;
+E = 2000; //energy, eV
+E = E*e; //energy, J
+lamda = h/sqrt(2*m*E); //wavelength, m
+lamda_nm = lamda*10^9; //velength, nm
+printf("wavelength is %5.4f nm",lamda_nm);
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