3401/CH2/EX2.1/Ex2_1.sce


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clc

lambda=0.708*10^-8// cm
h=6.625*10^-34// J*s Plank's constant
c=3*10^10// cm/s
e=1.6*10^-19// eV
E=h*c/lambda// E=hv=hc/lambda
disp(E,"the value of E in J is")
E=E/e
disp(E,"the value of E in eV is")